Infineon SP37 Function Manual

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Page 1

TPMS

Tire Pressure Monitoring Sensor

SP37

High integrated single-chip TPMS sensor with a low power embedded microcontroller and wireless FSK/ASK UHF transmitter

SP370 900kPa Version A5

ROM Library Function Guide

Revision 1.0, 2011-12-15

Sense & Control

Page 2

Edition 2011-12-15 Published by

Infineon Technologies AG 81726 Munich, Germany

Legal Disclaimer

The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party.

Information

For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com).

Warnings

Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office.

Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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SP37

We Listen to Your Comments

Any information within this document that you feel is wrong, unclear or missing at all? Your feedback will help us to continuously improve the quality of this document. Please send your proposal (including a reference to this document) to:

sensors@infineon.com

Tire Pressure Monitoring Sensor

SP37 High integrated single-chip TPMS sensor with a low power embedded micro-controller and wireless FSK/ASK UHF transmitter

Revision History: 2011-12-15, Revision 1.0 Previous Revision: Revision 0.1 Page Subjects (major changes since last revision)

Page 17 WakeUp time updated Page 22 Chapter Meas_Sensor updated Page 27 Note for calling two additional bytes, valid for all functions Page 31 Chapter Meas_Pressure updated Page 36 Chapter Automatic Pressure Range Operation added Page 42 Execution Time of the function Scale_Pressure updated Page 45 Chapter Meas_Acceleration updated Page 54 Execution Time of the function Raw_Temperature updated Page 54 Register of Output Value of Raw_Temperature corrected Page 71 Register CFG1 used in Powerdown Function Page 72 Execution Time of the function Powerdown updated Page 76 Execution Time of the function StartXtalOsc updated Page 84 Execution Time of the function IntervalTimerCalibration updated Page 86 Execution Time of the function LFBaudrateCalibration updated Page 87 Function MulIntInt(): 2 additional bytes for stack added Page 97 ReadID Input and Output Parameters updated Page 101 FW_Revision_Nb Input and Output Parameters updated Page 106 Execution Time of the function FlashUserConfigSectorLine updated Page 107 New function WriteFlashCodeSectorLine Page 110 Ressource Usage of the function FlashSetLock updated Page 110 Execution Time of the function FlashSetLock updated Page 121 Execution Time of the function Wait100usMultiples updated Page 123 Execution Time of the function Send_RF_Telegram updated Page 126 Flow Chart of Send_RF_Telegram Function

ROM Library Function Guide 3 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

Trademarks of Infineon Technologies AG

AURIX™, C166™, CanPAK™, CIPOS™, CIPURSE™, EconoPACK™, CoolMOS™, CoolSET™, CORECONTROL™, CROSSAVE™, DAVE™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPIM™, EiceDRIVER™, eupec™, FCOS™, HITFET™, HybridPACK™, I²RF™, ISOFACE™, IsoPACK™, MIPAQ™, ModSTACK™, my-d™, NovalithIC™, OptiMOS™, ORIGA™, PRIMARION™, PrimePACK™, PrimeSTACK™, PRO-SIL™, PROFET™, RASIC™, ReverSave™, SatRIC™, SIEGET™, SINDRION™, SIPMOS™, SmartLEWIS™, SOLID FLASH™, TEMPFET™, thinQ!™, TRENCHSTOP™, TriCore™.

Other Trademarks

Advance Design System™ (ADS) of Agilent Technologies, AMBA™, ARM™, MULTI-ICE™, KEIL™, PRIMECELL™, REALVIEW™, THUMB™, µVision™ of ARM Limited, UK. AUTOSAR™ is licensed by AUTOSAR development partnership. Bluetooth™ of Bluetooth SIG Inc. CAT-iq™ of DECT Forum. COLOSSUS™, FirstGPS™ of Trimble Navigation Ltd. EMV™ of EMVCo, LLC (Visa Holdings Inc.). EPCOS™ of Epcos AG. FLEXGO™ of Microsoft Corporation. FlexRay™ is licensed by FlexRay Consortium. HYPERTERMINAL™ of Hilgraeve Incorporated. IEC™ of Commission Electrotechnique Internationale. IrDA™ of Infrared Data Association Corporation. ISO™ of INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. MATLAB™ of MathWorks, Inc. MAXIM™ of Maxim Integrated Products, Inc. MICROTEC™, NUCLEUS™ of Mentor Graphics Corporation. Mifare™ of NXP. MIPI™ of MIPI Alliance, Inc. MIPS™ of MIPS Technologies, Inc., USA. muRata™ of MURATA MANUFACTURING CO., MICROWAVE OFFICE™ (MWO) of Applied Wave Research Inc., OmniVision™ of OmniVision Technologies, Inc. Openwave™ Openwave Systems Inc. RED HAT™ Red Hat, Inc. RFMD™ RF Micro Devices, Inc. SIRIUS™ of Sirius Satellite Radio Inc. SOLARIS™ of Sun Microsystems, Inc. SPANSION™ of Spansion LLC Ltd. Symbian™ of Symbian Software Limited. TAIYO YUDEN™ of Taiyo Yuden Co. TEAKLITE™ of CEVA, Inc. TEKTRONIX™ of Tektronix Inc. TOKO™ of TOKO KABUSHIKI KAISHA TA. UNIX™ of X/Open Company Limited. VERILOG™, PALLADIUM™ of Cadence Design Systems, Inc. VLYNQ™ of Texas Instruments Incorporated. VXWORKS™, WIND RIVER™ of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes Zetex Limited.

Last Trademarks Update 2011-02-24

ROM Library Function Guide 4 Revision 1.0, 2011-12-15

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Tire Pressure Monitoring Sensor

Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.1 General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.2 Type definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.3 Wakeup Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.4 Restricted RAM and FLASH areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.4.1 Restricted RAM areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.4.2 Restricted FLASH areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.5 8051 Instruction Set Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2 ROM Library Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.1 Meas_Sensor() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.1.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.1.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.1.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.1.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

2.1.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.1.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.2 Meas_Pressure() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.2.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.2.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.2.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.2.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.2.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

2.2.6 Automatic Pressure Range Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2.2.7 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

2.2.8 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

2.2.9 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

2.3 Scale_Pressure() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.3.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.3.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.3.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.3.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.3.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2.3.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

2.3.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

2.3.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

2.4 Meas_Acceleration() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.4.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.4.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.4.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2.4.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

2.4.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

2.4.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

2.4.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . 49

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2.4.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

2.5 Meas_Temperature() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.5.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.5.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.5.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.5.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.5.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.5.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.5.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.5.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

2.6 Raw_Temperature() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2.6.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

2.6.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

2.7 Comp_Temperature() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2.7.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2.7.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2.7.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2.7.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2.7.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

2.7.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

2.7.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

2.7.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

2.8 Meas_Supply_Voltage() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

2.8.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2.8.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2.8.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

2.9 Start_Supply_Voltage() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

2.9.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

2.9.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

2.9.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

2.9.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

2.9.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

2.9.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

2.9.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

2.9.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

2.10 Trig_Supply_Voltage() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2.10.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2.10.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2.10.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2.10.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2.10.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

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2.10.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2.10.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

2.10.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

2.11 Get_Supply_Voltage() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2.11.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2.11.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2.11.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2.11.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2.11.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2.11.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

2.11.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

2.11.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

2.12 ADC_Selftest() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

2.12.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

2.12.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

2.12.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

2.12.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

2.12.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

2.12.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

2.12.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

2.13 Powerdown() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2.13.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2.13.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2.13.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2.13.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2.13.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2.13.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2.13.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

2.14 ThermalShutdown() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2.14.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2.14.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2.14.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2.14.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2.14.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2.14.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2.14.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

2.15 StartXtalOsc() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

2.15.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

2.15.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

2.15.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

2.15.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

2.15.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

2.15.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

2.15.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

2.15.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

2.16 StopXtalOsc() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

2.16.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

2.16.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

2.16.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.16.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

2.16.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

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2.16.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

2.16.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

2.16.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

2.17 PLL_Ref_Signal_Check() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

2.17.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

2.17.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

2.17.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

2.17.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

2.17.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

2.17.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

2.17.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

2.18 VCO_Tuning() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2.18.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2.18.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2.18.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2.18.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2.18.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2.18.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

2.18.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

2.19 IntervalTimerCalibration() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

2.19.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

2.19.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

2.19.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

2.19.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

2.19.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

2.19.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

2.19.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

2.20 LFBaudrateCalibration() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

2.20.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

2.20.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

2.20.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

2.20.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

2.20.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

2.20.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

2.20.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

2.21 SMulIntInt() (16Bit * 16Bit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

2.21.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

2.21.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

2.21.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

2.21.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

2.21.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

2.21.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

2.21.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

2.22 UDivLongLong() (32Bit : 32Bit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

2.22.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

2.22.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

2.22.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

2.22.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

2.22.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

2.22.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

2.22.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

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2.23 UDivIntInt() (16Bit : 16Bit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.23.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.23.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.23.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.23.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.23.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.23.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.23.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

2.24 CRC8_Calc() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

2.24.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

2.24.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

2.24.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

2.24.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

2.24.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

2.24.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

2.24.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

2.25 CRC_Baicheva_Calc() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2.25.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2.25.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2.25.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2.25.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2.25.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2.25.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2.25.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

2.26 Read_ID() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

2.26.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

2.26.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

2.26.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

2.26.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

2.26.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

2.26.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2.26.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2.26.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2.27 ManuRevNb() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

2.27.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

2.27.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

2.27.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

2.27.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

2.27.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

2.27.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

2.27.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

2.28 FW_Revision_Nb() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

2.28.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

2.28.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

2.28.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

2.28.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

2.28.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

2.28.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

2.28.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.29 Erase_UserConfigSector() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

2.29.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

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2.29.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

2.29.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

2.29.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

2.29.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

2.29.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

2.29.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

2.30 WriteFlashUserConfigSectorLine() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

2.30.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

2.30.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

2.30.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

2.30.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

2.30.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

2.30.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

2.30.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

2.31 WriteFlashCodeSectorLine() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

2.31.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

2.31.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

2.31.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

2.31.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

2.31.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

2.31.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

2.31.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

2.32 FlashSetLock() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

2.32.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

2.32.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

2.32.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

2.32.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

2.32.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

2.32.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

2.32.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

2.33 ECC_Check() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2.33.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2.33.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2.33.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2.33.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2.33.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2.33.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2.33.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

2.33.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

2.34 CRC16_Check() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

2.34.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

2.34.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

2.34.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

2.34.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

2.34.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

2.34.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

2.34.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

2.34.8 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

2.35 HIRC_Clock_Check() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

2.35.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

2.35.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

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2.35.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

2.35.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

2.35.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

2.35.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

2.35.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

2.36 GetCompValue() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

2.36.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

2.36.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

2.36.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

2.36.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

2.36.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

2.36.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

2.36.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

2.37 Wait100usMultiples() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

2.37.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

2.37.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

2.37.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

2.37.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

2.37.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

2.37.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

2.37.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

2.38 Send_RF_Telegram() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

2.38.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

2.38.1.1 Baud Rate parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

2.38.1.2 Pattern Descriptor table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

2.38.1.3 Start of Table indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

2.38.1.4 Pattern Descriptor entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

2.38.1.5 Transmit Type Pattern Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

2.38.1.6 Delay Pattern descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

2.38.1.7 End of Table pattern descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

2.38.2 Flow Chart of Send_RF_Telegram() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

2.38.3 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

2.38.4 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

2.38.5 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

2.38.6 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

2.38.7 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

2.38.8 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

2.38.9 Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

2.39 Internal_SFR_Refresh() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

2.39.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

2.39.2 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

2.39.3 Prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

2.39.4 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

2.39.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

2.39.6 Resource Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

2.39.7 Execution Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Table of Contents

3 Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

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List of Figures

Figure 1 SP37 OpCode Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 2 Flow Chart for configuration of SensorConfig for Meas_Pressure() function. . . . . . . . . . . . . . . . . 37

Figure 3 Code example for usage of Meas_Pressure() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 4 Code example for usage of Scale_Pressure() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Figure 5 Code example for usage of Meas_Acceleration(). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 6 Code example for usage of Meas_Temperature() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Figure 7 Code example for usage of Comp_Temperature(). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Figure 8 Code example for usage of Meas_Supply_Voltage() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Figure 9 Code example for usage of the functions Start_Supply_Voltage, Trig_Supply_Voltage and

Get_Supply_Voltage() 68

Figure 10 Code example for usage of StartXtalOsc() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Figure 11 Code example for usage of StopXtalOsc() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Figure 12 Code example for usage of Read_ID() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Figure 13 Code example for usage of the functions ECC_Check() and CRC16_Check() . . . . . . . . . . . . . . 112

Figure 14 M by N matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Figure 15 Lookup table organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Figure 16 Datagram format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Figure 17 Datagram format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Figure 18 Transmit Type Pattern Descriptor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Figure 19 Delay Type Pattern Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Figure 20 End of Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Figure 21 Flow Chart of the Send_RF_Telegram() function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Figure 22 Code example for usage of Send_RF_Telegram(). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

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List of Tables

Table 1 Definition of types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 2 Wakeup Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 3 ROM Library functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 4 Meas_Sensor: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 5 Meas_Sensor: Input Parameter: SensorConfig[15:8] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 6 Meas_Sensor: Input Parameter: SensorConfig[7:0] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 7 Meas_Sensor: Input Parameter: SampleRate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table 8 Meas_Sensor: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 9 Meas_Sensor: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 10 Meas_Sensor: Pressure Measurement: Execution Time and Charge Consumption . . . . . . . . . . 28

Table 11 Meas_Sensor: Acceleration Measurement: Execution Time and Charge Consumption . . . . . . . . 30

Table 12 Meas_Pressure: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 13 Meas_Pressure: Input Parameter: SensorConfig[15:8] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 14 Meas_Pressure: Input Parameter: SensorConfig[7:0] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 15 Meas_Pressure: Input Parameter: SampleRate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 16 Meas_Pressure: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 17 Meas_Pressure: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Table 18 Meas_Pressure: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Table 19 Scale_Pressure: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 20 Scale_Pressure: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 21 Scale_Pressure: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table 22 Scale_Pressure: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table 23 Meas_Acceleration: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Table 24 Meas_Acceleration: Input Parameter: SensorConfig[15:8] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 25 Meas_Acceleration: Input Parameter: SensorConfig[7:0] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 26 Meas_Acceleration: Input Parameter: SampleRate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 27 Meas_Acceleration: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 28 Meas_Acceleration: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 29 Meas_Acceleration: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 30 Meas_Temperature: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Table 31 Meas_Temperature: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Table 32 Meas_Temperature: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Table 33 Meas_Temperature: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Table 34 Raw_Temperature: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Table 35 Raw_Temperature: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Table 36 Raw_Temperature: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Table 37 Raw_Temperature: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Table 38 Comp_Temperature: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 39 Comp_Temperature: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 40 Comp_Temperature: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table 41 Comp_Temperature: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table 42 Meas_Supply_Voltage: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 43 Meas_Supply_Voltage: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Table 44 Meas_Supply_Voltage: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Table 45 Meas_Supply_Voltage: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . 60

Table 46 Start_Supply_Voltage: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table 47 Start_Supply_Voltage: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table 48 Start_Supply_Voltage: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Table 49 Start_Supply_Voltage: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . 63

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Table 50 Trig_Supply_Voltage: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Table 51 Trig_Supply_Voltage: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Table 52 Trig_Supply_Voltage: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Table 53 Trig_Supply_Voltage: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . 65

Table 54 Get_Supply_Voltage: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Table 55 Get_Supply_Voltage: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Table 56 Get_Supply_Voltage: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Table 57 Get_Supply_Voltage: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . 67

Table 58 ADC_Selftest: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Table 59 ADC_Selftest: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Table 60 ADC_Selftest: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Table 61 ADC_Selftest: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Table 62 Powerdown: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Table 63 Powerdown: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Table 64 Powerdown: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Table 65 Powerdown: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Table 66 ThermalShutdown: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Table 67 ThermalShutdown: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Table 68 ThermalShutdown: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Table 69 ThermalShutdown: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Table 70 StartXtalOsc: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Table 71 StartXtalOsc: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Table 72 StartXtalOsc: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Table 73 StartXtalOsc: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Table 74 StopXtalOsc: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Table 75 StopXtalOsc: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Table 76 StopXtalOsc: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Table 77 StopXtalOsc: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Table 78 PLL_Ref_Signal_Check: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Table 79 PLL_Ref_Signal_Check: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Table 80 PLL_Ref_Signal_Check: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Table 81 PLL_Ref_Signal_Check: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . 80

Table 82 VCO_Tuning: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Table 83 VCO_Tuning: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Table 84 VCO_Tuning: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Table 85 IntervalTimerCalibration: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Table 86 IntervalTimerCalibration: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Table 87 IntervalTimerCalibration: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Table 88 IntervalTimerCalibration: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . 84

Table 89 LFBaudrateCalibration: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Table 90 LFBaudrateCalibration: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Table 91 LFBaudrateCalibration: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Table 92 LFBaudrateCalibration: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . 86

Table 93 SMulIntInt: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Table 94 SMulIntInt: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Table 95 SMulIntInt: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Table 96 SMulIntInt: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Table 97 UDivLongLong: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Table 98 UDivLongLong: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Table 99 UDivLongLong: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Table 100 UDivLongLong: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

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Table 101 UDivIntInt: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Table 102 UDivIntInt: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Table 103 UDivIntInt: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Table 104 UDivIntInt: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Table 105 CRC8_Calc: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Table 106 CRC8_Calc: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Table 107 CRC8_Calc: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Table 108 CRC8_Calc: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Table 109 CRC_Baicheva_Calc: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Table 110 CRC_Baicheva_Calc: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Table 111 CRC8_Baicheva_Calc: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Table 112 CRC_Baicheva_Calc: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . 96

Table 113 Read_ID: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Table 114 Read_ID: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Table 115 Read_ID: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Table 116 Read_ID: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Table 117 ManuRevNb: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Table 118 ManuRevNb: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Table 119 ManuRevNb: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Table 120 ManuRevNb: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Table 121 FW_Revision_Nb: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Table 122 FW_Revision_Nb: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Table 123 FW_Revision_Nb: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Table 124 FW_Revision_Nb: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Table 125 Erase_UserConfigSector: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Table 126 Erase_UserConfigSector: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Table 127 Erase_UserConfigSector: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Table 128 Erase_UserConfigSector: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . 104

Table 129 WriteFlashUserConfigurationSectorLine: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Table 130 WriteFlashUserConfigurationSectorLine: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Table 131 WriteFlashUserConfigurationSectorLine: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Table 132 WriteFlashUserConfigurationSectorLine: Execution Time and Charge Consumption . . . . . . . . . 106

Table 133 WriteFlashCodeSectorLine: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Table 134 WriteFlashCodeSectorLine: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Table 135 WriteFlashCodeSectorLine: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Table 136 WriteFlashCodeSectorLine: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . 108

Table 137 FlashSetLock: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Table 138 FlashSetLock: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Table 139 FlashSetLock: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Table 140 FlashSetLock: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Table 141 ECC_Check: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Table 142 ECC_Check: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Table 143 ECC_Check: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Table 144 ECC_Check: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Table 145 CRC16_Check: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Table 146 CRC16_Check: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Table 147 CRC16_Check: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Table 148 CRC16_Check: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Table 149 HIRC_Clock_Check: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Table 150 HIRC_Clock_Check: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Table 151 HIRC_Clock_Check: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

List of Tables

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Table 152 HIRC_Clock_Check: Execution Time and Charge Consumption. . . . . . . . . . . . . . . . . . . . . . . . . 116

Table 153 GetCompValue: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Table 154 GetCompValue: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Table 155 GetCompValue: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Table 156 GetCompValue: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Table 157 Wait100usMultiples: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Table 158 Wait100usMultiples: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Table 159 Wait100usMultiples: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Table 160 Wait100usMultiples: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . 122

Table 161 Send_RF_Telegram: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Table 162 Send_RF_Telegram: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Table 163 Send_RF_Telegram: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Table 164 Send_RF_Telegram: Execution Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Table 165 Send_RF_Telegram: Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Table 166 Internal_SFR_Refresh: Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Table 167 Internal_SFR_Refresh: Output values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Table 168 Internal_SFR_Refresh: Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Table 169 Internal_SFR_Refresh: Execution Time and Charge Consumption . . . . . . . . . . . . . . . . . . . . . . . 133

List of Tables

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SP37

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Introduction

1 Introduction

1.1 General Considerations

This document describes the ROM Library functions that are available in the SP37 Version A5 step device. When the ROM Library Function “FW_Revision_Nb()” on Page 101 is called, these devices will return the value 0A32 for the ROM revision.

In order for the application to use these ROM Library functions, the following files have to be included to the software project:

• SP37_ROMLibrary.h (the header file the function prototypes)

• SP37_ROMLibrary.lib (the precompiled ROM Library functions)

Notes

1. The application must ensure that no IDLE-RESUME event source is active before any call of the

ROM Library_functions.

2. All typical charge consumptions and typical execution times stated throughout this document were obtained

from measurements of 10 devices at

3. Analysis of General Register, SFR, and Stack resource usage was performed on object code generated by

Keil uVision3 (Assembler version: 8.00d, Compiler version: 8.08, Linker version: 6.05, Hex converter version: 2.6.0.1).

= 3.0 V and T

BAT

Ambient

= 25°C

1.2 Type definitions

The following table defines the parameter types used throughout this document.

Table 1 Definition of types Type Description Range

Minimum Maximum

Unsigned char 8 bit value without sign bit 0 255 Signed char 8 bit value with sign bit -128 127 Unsigned int 16 bit value without sign bit 0 65,535 Signed int 16 bit value with sign bit -32,768 32,767 Unsigned long 32 bit value without sign bit 0 4,294,967,295 Signed long 32 bit value with sign bit -2,147,483,648 2,147,483,647

The Keil C51 Compiler stores data in big endian format (MSB first).

1.3 Wakeup Handler

The Wakeup-Handler is executed every time the device wakes up from POWER DOWN state. Possible wakeup sources are listed in SP37 Datasheet [1].

Table 2 Wakeup Handler Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Wakeup from POWER DOWN state (independent of Wakeup source)

wakeup

– 0.85 1.8 ms

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Introduction

1.4 Restricted RAM and FLASH areas

The ROM Library functions use certain address areas in RAM and FLASH. To ensure that the ROM Library functions operate properly, the application may not use these locations for storage, nor alter the contents of these memory locations

1.4.1 Restricted RAM areas

The RAM area C1H through FFH (upper 63 Bytes) of the 256 Bytes RAM is used and overwritten by the ROM Library functions.

1.4.2 Restricted FLASH areas

The FLASH area 57FAH through 57FCH is reserved for storage of the crystal frequency to be used in the application. The crystal frequency (divided by two) has to be written to that location during FLASH programming in the production in order to provide the ROM Library functions with the correct timebase for calibration purposes.

For 315 MHz applications a 19.6875 MHz crystal is used and the crystal frequency divided by two has to be written to that location.

19,687,500 Hz : 2 = 9,843,750 Hz = 963426 The values in FLASH have to be written in the following way:

• Flash address 57FA

• Flash address 57FBH: 34

• Flash address 57FCH: 26

: 96

For 433.92 MHz applications an 18.0800 MHz crystal is used and the crystal frequency divided by two has to be written to that location.

18,080,000 Hz : 2 = 9,040,000 Hz = 89F080 The values in FLASH have to be written in the following way:

• Flash address 57FA

• Flash address 57FBH: F0

• Flash address 57FCH: 80

: 89

The FLASH address 57FFH is reserved for Lockbyte 3. This value must not be changed by the application otherwise it might result in an unintentionally locked FLASH User Configuration Sector. Locking this sector is irreversible and shall only be done by either programming the Lockbyte 3 together with writing and locking the FLASH Code Sector or by a dedicated ROM Library function FlashSetLock().

Note: If Erase_UserConfigSector() or WriteFlashUserConfigSectorLine() are used by the application it has to

be ensured that these restricted Flash locations are restored to the proper values.

1.5 8051 Instruction Set Summary

As the SP37 incorporates an 8051 compatible microcontroller, Figure 1 shows the SP37 OpCode Map.

ROM Library Function Guide 18 Revision 1.0, 2011-12-15

Page 19

SP37

123456789ABCDEF0

AJMP

page1

2/2

LCALL

addr16

3/2

RET

1/2

ACALL

page0

2/2

ACALL

page1

2/2

RRC

1/1

DEC

1/1

DEC

dir

2/1

DEC

@R0

1/1

DEC

@R1

1/1

DEC

1/1

DEC

1/1

DEC

1/1

DEC

1/1

DEC

1/1

DEC

1/1

DEC

1/1

DEC

1/1

RLC

1/1

RETI

1/2

AJMP

page2

2/2

ACALL

page2

2/2

ORL

dir,A

2/1

ORL

dir,#imm

3/2

ANL

dir,A

2/1

ANL

dir,#imm

3/2

AJMP

page3

2/2

ACALL

page3

2/2

XRL

dir,A

2/1

XRL

dir,#imm

3/2

MOV

A,#imm

2/1

ORL

C,bit

2/2 *

JMP

@A+DPTR

1/2

ANL

C,bit

2/2 *

AJMP

page4

2/2

ACALL

page4

2/2

AJMP

page5

2/2

ACALL

page5

2/2

AJMP

page6

2/2

ACALL

page6

2/2

AJMP

page7

2/2

ACALL

page7

2/2

MOVC

A,@A +PC

1/2

MOVC

A,@A+DPTR

1/2

DIV

1/4

MOV

dir,@R0

2/2 *

MOV

dir,@R1

2/2 *

MOV

dir,R0

2/2 *

MOV

dir,R1

2/2 *

MOV

dir,R2

2/2 *

MOV

dir,R3

2/2 *

MOV

dir,R4

2/2 *

MOV

dir,R5

2/2 *

MOV

dir,R6

2/2 *

MOV

dir,R7

2/2 *

MOV

dir,dir

3/2

MOV

bit,C

2/2 *

MOV

C,bit

2/1

INC

DPTR

1/2 *

MUL

1/4

MOV

@R0,dir

/2*

MOV

@R1,dir

2/2 *

MOV

R0, dir

2/2 *

MOV

R1, dir

2/2 *

MOV

R2, dir

2/2 *

MOV

R3, dir

2/2 *

MOV

R4, dir

2/2 *

MOV

R5, dir

2/2 *

MOV

R6, dir

2/2 *

MOV

R7, dir

2/2 *

CPL

bit

2/1

CPL

1/1

CJNE

A,#imm

3/2

CJNE

A,dir

3/2

CJNE

@R0,#im m

3/2

CJNE

@R1,#imm

3/2

CJNE

R0,#imm

3/2

CJNE

R1,#imm

3/2

CJNE

R2,#imm

3/2

CJNE

R3,#imm

3/2

CJNE

R4,#imm

3/2

CJNE

R5,#imm

3/2

CJNE

R6,#imm

3/2

CJNE

R7,#imm

3/2

CLR

bit

2/1

CLR

1/1

SWAP

1/1

XCH

A,@R0

1/1

XCH

A,@R1

1/1

XCH

A,R0

1/1

XCH

A,R1

1/1

XCH

A,R2

1/1

XCH

A,R3

1/1

XCH

A,R4

1/1

XCH

A,R5

1/1

XCH

A,R6

1/1

XCH

A,R7

1/1

XCH

A,dir

2/1

SETB

bit

2/1

SETB

1/1

DJNZ

dir,rel

3/2

XCHDA,

@R0

1/1

XCHD

A,@R1

1/1

DJNZ

R0, re l

2/2

DJNZ

R1, re l

2/2

DJNZ

R2, rel

2/2

DJNZ

R3, re l

2/2

DJNZ

R4, re l

2/2

DJNZ

R5, re l

2/2

DJNZ

R6, re l

2/2

DJNZ

R7, re l

2/2

MOVX

A,@R0

1/2

MOVX

A,@R1

1/2

MOVX

@R0,A

1/2

MOVX

@R1,A

1/2

CLR

1/1

CPL

1/1

MOV

@R0, A

1/1

MOV

@R1,A

1/1

MOV

R0,A

1/1

MOV

R1,A

1/1

MOV

R2,A

1/1

MOV

R3,A

1/1

MOV

R4,A

1/1

MOV

R5,A

1/1

MOV

R6,A

1/1

MOV

R7,A

1/1

MOV

A,@R0

1/1

MOV

A,@R1

1/1

MOV

A,R0

1/1

MOV

A,R1

1/1

MOV

A,R2

1/1

MOV

A,R3

1/1

MOV

A,R4

1/1

MOV

A,R5

1/1

MOV

A,R6

1/1

MOV

A,R7

1/1

MOV

A,dir

2/1

MOV

dir,A

2/1

ADD

A,@R0

1/1

ADD

A,@R1

1/1

ADD

A,R0

1/1

ADD

A,R1

1/1

ADD

A,R2

1/1

ADD

A,R3

1/1

ADD

A,R4

1/1

ADD

A,R5

1/1

ADD

A,R6

1/1

ADD

A,R7

1/1

ADD

A,dir

2/1

ADD

A,#imm

2/1

ADDC

A,@R0

1/1

ADDC

A,@R1

1/1

ADDC

A,R0

1/1

ADDC

A,R1

1/1

ADDC

A,R2

1/1

ADDC

A,R3

1/1

ADDC

A,R4

1/1

ADDC

A,R5

1/1

ADDC

A,R6

1/1

ADDC

A,R7

1/1

ADDC

A,dir

2/1

ADDC

A,#imm

2/1

ORL

A,@R0

1/1

ORL

A,@R1

1/1

ORL

A,R0

1/1

ORL

A,R1

1/1

ORL

A,R2

1/1

ORL

A,R3

1/1

ORL

A,R4

1/1

ORL

A,R5

1/1

ORL

A,R6

1/1

ORL

A,R7

1/1

ORL

A,dir

2/1

ORL

A,#imm

2/1

ANL

A,@R0

1/1

ANL

A,@R1

1/1

ANL

A,R0

1/1

ANL

A,R1

1/1

ANL

A,R2

1/1

ANL

A,R3

1/1

ANL

A,R4

1/1

ANL

A,R5

1/1

ANL

A,R6

1/1

ANL

A,R7

1/1

ANL

A,dir

2/1

ANL

A,#imm

2/1

XRL

A,@R0

1/1

XRL

A,@R1

1/1

XRL

A,R0

1/1

XRL

A,R1

1/1

XRL

A,R2

1/1

XRL

A,R3

1/1

XRL

A,R4

1/1

XRL

A,R5

1/1

XRL

A,R6

1/1

XRL

A,R7

1/1

XRL

A,dir

2/1

XRL

A,#imm

2/1

MOV

dir,#imm

3/2

MOV

@R0,#im m

2/1

MOV

@R1,#imm

2/1

MOV

R0,#imm

2/1

MOV

R1,#imm

2/1

MOV

R2,#imm

2/1

MOV

R3,#imm

2/1

MOV

R4,#imm

2/1

MOV

R5,#imm

2/1

MOV

R6,#imm

2/1

MOV

R7,#imm

2/1

SUBB

A,@R0

1/1

SUBB

A,@R1

1/1

SUBB

A,R0

1/1

SUBB

A,R1

1/1

SUBB

A,R2

1/1

SUBB

A,R3

1/1

SUBB

A,R4

1/1

SUBB

A,R5

1/1

SUBB

A,R6

1/1

SUBB

A,R7

1/1

SUBB

A,dir

2/1

SUBB

A,#imm

2/1

AJMP

page0

2/2

LJMP

addr16

3/2

1/1

INC

1/1

INC

dir

2/1

INC

@R0

1/1

INC

@R1

1/1

INC

1/1

INC

1/1

INC

1/1

INC

1/1

INC

1/1

INC

1/1

INC

1/1

INC

1/1

NOP

1/1

JBC

bit,rel

3/2

bit,rel

3/2

JNB

bit,rel

3/2

rel

2/2

JNC

rel

2/2

rel

2/2

JNZ

rel

2/2

SJMP

rel

2/2

MOV

DPTR,# imm

3/2

ORL C,bit

2/2 *

ANL

C,bit

2/2 *

PUSH

dir

2/2 *

POP

dir

2/2 *

MOVX

A,@DPTR

1/2

MOVX

@DPTR,A

1/2

INC

DPTR

1/2 *

mnemonic

inst. length (bytes)

inst. cycles (* indicates optimzed)

addressing mode

Least Significant Nybble

Most Significant Nybble

Tire Pressure Monitoring Sensor

Figure 1 SP37 OpCode Map

Introduction

ROM Library Function Guide 19 Revision 1.0, 2011-12-15

Page 20

SP37

Tire Pressure Monitoring Sensor

ROM Library Functions

2 ROM Library Functions

The following library functions are available for application usage:

Table 3 ROM Library functions ROM Library function Description Page

Meas_Sensor() Measures the ambient air pressure or acceleration Page 22 Meas_Pressure() Measures the ambient air pressure Page 31 Scale_Pressure() Scale pressure into a single byte for RF transmission Page 42 Meas_Acceleration() Measures the acceleration Page 45 Meas_Temperature() Measures the ambient temperature Page 51 Raw_Temperature() Measures the raw temperature Page 54 Comp_Temperature() Compensates raw temperature data Page 56 Meas_Supply_Voltage() Measures the battery voltage Page 59 Start_Supply_Voltage() These three functions perform a Battery Voltage Trig_Supply_Voltage() Page 64 Get_Supply_Voltage() Page 66 ADC_Selftest() Returns the delta of ADC test measurements Page 69 Powerdown() Forces the device to POWER DOWN state Page 71 ThermalShutdown() Forces the device to THERMAL SHUTDOWN state Page 73 StartXtalOsc() Enables the Crystal Oscillator Page 75 StopXtalOsc() Stops the Crystal Oscillator Page 77 PLL_Ref_Signal_Check() Evaluates Crystal Resonator signal Page 79 VCO_Tuning() Tunes the VCO frequency Page 81 IntervalTimerCalibration() Calibrates the Interval Timer precounter Page 83 LFBaudrateCalibration() Calibrates the LF baudrate divider Page 85 SMulIntInt() Multiplies two signed values (16 bit * 16 bit) Page 87 UDivLongLong() Divides two unsigned values (32 bit : 32 bit) Page 89 UDivIntInt() Divides two unsigned values (16 bit : 16 bit) Page 91 CRC8_Calc() Calculates an 8 Bit CRC with polynom 83 CRC_Baicheva_Calc() Calculates an 8 Bit CRC with poylnom 97 Read_ID() Returns the unique device ID Page 97 ManuRevNb() Returns the device revision number Page 99 FW_Revision_Nb() Returns the ROM- and Flash library revision number Page 101 Erase_UserConfigSector() Erases the FLASH user configuration sector Page 103 WriteFlashUserConfigSectorLine() Writes one FLASH line (32 Bytes) in the FLASH user

WriteFlashCodeSectorLine() Writes one FLASH line (32 Bytes) in the FLASH

FlashSetLock() Sets the Lockbyte to protect the User Configuration

ECC_Check() Evaluates the ECC result bit Page 111

measurement during an RF Transmission.

configuration sector

Code Sector 0.

sector

Page 62

Page 93 Page 95

Page 105

Page 107

Page 109

ROM Library Function Guide 20 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

Table 3 ROM Library functions (cont’d) ROM Library function Description Page

CRC16_Check() Evaluates the CRC16 result of a memory block Page 113 HIRC_Clock_Check() Evaluates the 12 MHz_RC_Oscillator frequency Page 115 GetCompValue() Returns a compensated value from look up table Page 117 Wait100usMultiples() Performs a delay of 100 µs multiples Page 121 Send_RF_Telegram() Configures and transmits RF frames Page 123 Internal_SFR_Refresh() Loads default values into the internal SFRs Page 132

ROM Library Functions

ROM Library Function Guide 21 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

ROM Library Functions

2.1 Meas_Sensor()

2.1.1 Description

This function performs a pressure or acceleration sensor measurement determined by SensorConfig. The pressure or acceleration result can be either:

• Compensated for sensitivity, offset and temperature

• Output as raw value without performing the compensation The function can measure either pressure or acceleration with up to 64 samples at a specified sample rate. The

function will return the maximum or average (arithmetic mean) pressure or acceleration value in order to compensate for noise. The function performs a new temperature measurement for compensating the pressure or acceleration measurements, unless a previously measured raw temperature value is supplied. Number of samples and raw temperature source are both determined by SensorConfig. SampleRate controls how frequently the measurement acquisitions occur and will not influence the measurement result under stable input pressure or acceleration conditions. The device is set to IDLE mode during the delay between measurement acquisitions.

In case of pressure measurement, SensorConfig can be configured to automatically determine the high/low pressure range where to perform the measurement. The choice of the pressure measurement range can also be performed manually.The pressure hysteresis thresholds can be selected: either predefined from Infineon factorydefault setting, or specified when calling this function (see SensorResult).

2.1.2 Actions

Pressure Measurement

• Measure pressure sensor with channel and number of samples given by SensorConfig

• Check wire bonds between the ASIC and the sensor die

• Average the measurement result(s), or (optionally) use the maximum raw measurement, to obtain a raw

pressure value

• Sensor gain is automatically configured

• (optionally) Switch between Low and High Pressure range automatically, using configured thresholds

• (optionally) Perform a raw temperature measurement

• (optionally) Compensate the raw pressure value Acceleration Measurement

• Measure acceleration sensor with channel and number of samples given by SensorConfig

• Check wire bonds between the ASIC and the sensor die & sensor beam integrity

• Sensor gain is automatically configured

• Average the measurement(s), or (optionally) use the maximum raw measurement, to obtain a raw acceleration

value

• (optionally) Perform a raw temperature measurement

• (optionally) Compensate the raw acceleration value

2.1.3 Prototype

unsigned char Meas_Sensor (unsigned int SensorConfig, unsigned char SampRate, signed int idata *SensorResult )

ROM Library Function Guide 22 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

ROM Library Functions

2.1.4 Inputs

Table 4 Meas_Sensor: Input Parameters Register / Address Type Name Description

R6 (MSB) R7 (LSB)

R5 unsigned char SampleRate Defines the number of system clock cycles

R3 signed int

*(SensorResult+2) signed int RawTemperature Previous Raw Temperature value can optionally

*(SensorResult+3) signed int LowPressureThre

*(SensorResult+4) signed int HighPressureThr

unsigned int SensorConfig Defines Sensor Configuration (refer to Table 5

and Table 6)

(12 MHz RC Oscillator) divided by 8 which is waited between consecutive measurements.

Note: Only applicable if SensorConfig.2-0

[2POWN2:0] greater than 1 Sample

SensorResult Pointer to an integer array in RAM to receive the

idata*

shold

eshold

measurement result

be used as input parameter. Refer to bit RAWTemp in SensorConfig.

(optional input parameter) Value for hysteresis (in 1/16kPa) used by the pressure auto-range selection to determine when to switch from Highto-Low. It must be specified only if the parameter SensorConfig.11 is set to 1 (Customer Configuration).

(optional input parameter) Value for hysteresis (in 1/16kPa) used by the pressure auto-range selection to determine when to switch from Lowto-High. It must be specified only if the parameter SensorConfig.11 is set to 1 (Customer Configuration).

ROM Library Function Guide 23 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

ROM Library Functions

Table 5 Meas_Sensor: Input Parameter: SensorConfig[15:8] Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 RES RES RES RES HYST ARANGE PRANGE RAWTemp

RES RES bits have to be set to 0

HYST Select the thresholds for pressure hysteresis:

: Internal Configuration:550kPa is the threshold from low to high pressure range

and 500kPa is the threshold from high to low pressure range. 1

: Customer Configuration - see (SensorResult+3) and (SensorResult+4)

ARANGE Automatic range selection for pressure measurement:

: Manual

: Automatic

If compensation is disabled (SensorConfig.6[RAW]==.1) a manual pressure range measurement is performed, using the range specified by SensorConfig.9[PRANGE]. Automatic Pressure Range is not supported for raw (uncompensated) measurements.

PRANGE Pressure range: (ignored if SensorConfig.10[ARANGE]==1)

: Low range (500kPa)

: High range (900kPa)

RAWTemp Selects source of raw temperature data for compensation

: Perform new raw temperature measurement

: Use raw temperature data supplied in *(SensorResult+2)

Table 6 Meas_Sensor: Input Parameter: SensorConfig[7:0] Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Sens_Type RAW RES RES MODE 2POWN.2 2POWN.1 2POWN.0

Sens_Type Select Pressure or Acceleration Measurement

: Acceleration Measurement

: Pressure Measurement

RAW Defines if the raw ADC result is compensated

: Temperature compensation is performed. Returns compensated & raw value

: No compensation is performed. Returns only raw value. If

SensorConfig bit RAWTemp is set to 1

, no RAW temperature measurement is

performed. If no compensation is performed, the autorange selection is disabled and the range has to be set manually.

Note: See Table 8 for impact on ROM Library function output

RES RES bits have to be set to 0

ROM Library Function Guide 24 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

ROM Library Functions

Table 6 Meas_Sensor: Input Parameter: SensorConfig[7:0] (cont’d) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Sens_Type RAW RES RES MODE 2POWN.2 2POWN.1 2POWN.0

Mode Acceleration and Pressure Mode:

: Average value

: Maximum value

2POWN[2:0] Number of ADC measurements that are taken and averaged

111

: 64 Samples

110

: 64 Samples

101

: 32 Samples

100

: 16 Samples

011

: 8 Samples

010

: 4 Samples

001

: 2 Samples

000

: 1 Sample

Table 7 Meas_Sensor: Input Parameter: SampleRate Bit7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SR.7 SR.6 SR.5 SR.4 SR.3 SR.2 SR.1 SR0

SR[7:0] Number of systemclock cycles divided by 8 between two consecutive samples (only

applicable if more than one sample is taken): 00

: No delay (fastest possible sample rate)

..4FH: Not allowed

..FFH: 1/sample rate (sample rate in systemclocks divided by 8)

ROM Library Function Guide 25 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

2.1.5 Outputs

Table 8 Meas_Sensor: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

*(SensorResult+0) signed int Compensated

Pressure

xxxx.xxx1 xxxx.xx1xB: Overflow of ADC Result xxxx.x1xxB: Sensor Fault Wire Bond Check xxxx.1xxx for acceleration measurement) xxx1.xxxx

If Input Bit SensorConfig.7[Sens_Type] == 1; If Input Bit SensorConfig.6[RAW] == 0: 8000 0000 7FFF ( = 2048 kPa - 1 LSB where 1 LSB = 1/16 kPa)

= -2048.0 kPa (Only theoretical)

= 0.0 kPa

= 2047.9375 kPa

ROM Library Functions

: Success

: Underflow of ADC Result

: Sensor Fault Diagnosis Resistor (only

: VMIN warning

If Input Bit SensorConfig.6[RAW] == 1:

since no compensation is performed

8000

Compensated Acceleration

If Input Bit SensorConfig.7[Sens_Type] == 0; If Input Bit SensorConfig.6[RAW] == 0: 8000

= -2048.0 g

0000

= 0.0 g

7FFF

= 2047.9375 g

( = 2048 g - 1 LSB where 1 LSB = 1/16 g)

If Input Bit SensorConfig.6[RAW] == 1: 8000

since no compensation is performed

*(SensorResult+1) signed int Raw Pressure 10 Bit ADC Result Value:

0000.00xx.xxxx.xxxx

Raw Acceleration 10 Bit ADC Result Value:

0000.00xx.xxxx.xxxx

*(SensorResult+2) signed int Raw Temperature If Input Bit SensorConfig.6[RAW] == 0:

16 Bit scaled signed ADC Result Value

If Input Bit SensorConfig.6[RAW] == 1: 8000

since no temperature measurement is

performed

1) If the sensor measurement result is within the input range for which its accuracy is specified, then the ADC

underflow/overflow condition is due to a measurement failure and the measurement results are not valid. Otherwise, if the sensor measurement result is outside of this input range, then the ADC underflow/overflow bits may be ignored.

ROM Library Function Guide 26 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

2.1.6 Resource Usage

Table 9 Meas_Sensor: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG0

TMOD

Stack 13 Bytes2)

1) Only affected if more than 1 sample is taken

2) Two additional bytes, not included here, are needed to call the library function

, CFG1, CFG2, DIVIC, DPH, DPL, PSW, TCON1), TH01), TL01),

ROM Library Functions

ROM Library Function Guide 27 Revision 1.0, 2011-12-15

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SP37

Tire Pressure Monitoring Sensor

ROM Library Functions

2.1.7 Execution Information

Table 10 Meas_Sensor: Pressure Measurement: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Compensated with new raw temperature measurement, 2 samples

Execution Time Compensated when supplied with previously obtained raw temperature value, 2 samples

Execution Time Raw (uncompensated) pressure result, 2 samples

Execution Time for each additional sample for averaging

Execution Time in autorange selection Compensated with new raw temperature measurement, 2 samples

Execution Time in autorange selection Compensated when supplied with previously obtained raw temperature value, 2 samples

Execution Time in autorange selection for each additional sample for averaging

Charge Consumption Compensated with new raw temperature measurement, 2 samples

Charge Consumption Compensated when supplied with previously obtained raw temperature value, 2 samples

Charge Consumption Raw (uncompensated) pressure result, 2 samples

Charge Consumption for each additional sample for averaging

comp,new

comp,prev

RAW

sample

– 916 1016 µs DIVIC = 00H,

SensorConfig = 0081 SampleRate = 00

– 686 768 µs DIVIC = 00H,

SensorConfig = 0181 SampleRate = 00

– 304 332 µs DIVIC = 00H,

SensorConfig = 00C1 SampleRate = 00

– 54 60 µs SampleRate = 00

Only 1, 2, 4, 8, 16, 32, 64 samples possible

autocomp,n

autpcomp,p

rev

autosample

– 944 1008 µs DIVIC = 00H,

SensorConfig = 0481 SampleRate = 00

– 714 760 µs DIVIC = 00H,

SensorConfig = 0581 SampleRate = 00

– 54 59 µs SampleRate = 00

Only 1, 2, 4, 8, 16, 32, 64 samples possible

comp,new

comp,prev

RAW

sample

– 1,62 2,535 µC DIVIC = 00H,

SensorConfig = 0081 SampleRate = 00

– 1,175 1,889 µC DIVIC = 00H,

SensorConfig = 0181 SampleRate = 00

– 0,549 0,821 µC DIVIC = 00H,

SensorConfig = 00C1 SampleRate = 00

– 0,118 0,151 µC SampleRate = 00

Only 1, 2, 4, 8, 16, 32, 64 samples possible

ROM Library Function Guide 28 Revision 1.0, 2011-12-15

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Table 10 Meas_Sensor: Pressure Measurement: Execution Time and Charge Consumption (cont’d) Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Charge Consumption in autorange selection Compensated with new raw

autpcomp,

new

– 1,643 2,515 µC DIVIC = 00H,

SensorConfig = 0481 SampleRate = 00

temperature measurement, 2 samples

Charge Consumption in autorange selection Compensated when supplied

autocomp,

– 1,196 1,869 µC DIVIC = 00H,

SensorConfig = 0581 SampleRate = 00

with previously obtained raw temperature value, 2 samples

Charge Consumption in autorange selection for each

autosampl

– 0,118 0,148 µC SampleRate = 00

Only 1, 2, 4, 8, 16, 32, 64 samples possible

additional sample for averaging

1) The execution time and charge consumption for automatic range selection have been verified when the proper pressure

range is selected.

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Table 11 Meas_Sensor: Acceleration Measurement: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Compensated with new raw temperature measurement, 2 samples

Execution Time Compensated when supplied with previously obtained raw temperature

comp,new

comp,prevt

– 906 1013 µs DIVIC = 00H,

SensorConfig = 0001 SampleRate = 00

– 652 765 µs DIVIC = 00H,

SensorConfig = 0101 SampleRate = 00

value, 2 samples Execution Time Raw

(uncompensated) acceleration result, 2 samples

Execution Time for each

RAW

sample

– 304 332 µs DIVIC = 00H,

SensorConfig = 0041 SampleRate = 00

– 64 71 µs SampleRate = 00

additional sample for averaging Charge Consumption

Compensated with new internal raw temperature measurement,

comp,new

– 1,603 2,512 µC DIVIC = 00H,

SensorConfig = 0001 SampleRate = 00

2 samples Charge Consumption

Compensated when supplied with previously obtained raw

comp,prev

– 1,122 1,866 µC DIVIC = 00H,

SensorConfig = 0101 SampleRate = 00

temperature value, 2 samples Charge Consumption Raw

(uncompensated) acceleration result, 2 samples

Charge Consumption for each

RAW

sample

– 0,551 0,805 µC DIVIC = 00H,

SensorConfig = 0041 SampleRate = 00

– 0,135 0,17 µC SampleRate = 00

additional sample for averaging

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2.2 Meas_Pressure()

2.2.1 Description

This function performs a pressure sensor measurement. The result can be either:

• Compensated for sensitivity, offset and temperature

• Output as raw value without performing the compensation The function can measure pressure with up to 64 samples at a specified sample rate. The function will return the

maximum or average (arithmetic mean) pressure value in order to compensate for noise. The function performs a new temperature measurement for compensating the pressure measurements, unless a previously measured raw temperature value is supplied. Number of samples and raw temperature source are both determined by SensorConfig. SampleRate controls how frequently the measurement acquisitions occur and will not influence the measurement result under stable input pressure conditions. The device is set to IDLE mode during the delay between measurement acquisitions. SensorConfig can be configured to automatically determine the high/low pressure range. The choice of the pressure measurement range can also be performed manually.The pressure hysteresis thresholds detection can be selected: either predefined from Infineon factory-default setting, or specified when calling this function - see PressResult.

2.2.2 Actions

• Measure pressure sensor with channel and number of samples given by SensorConfig

• Check wire bonds between the ASIC and the sensor die

• Average the measurement result(s), or (optionally) use the maximum raw measurement, to obtain a raw

pressure value

• (optionally) Switch between Low and High pressure range automatically, using configured thresholds

• (optionally) Perform a raw temperature measurement

• (optionally) Compensate the raw pressure value

2.2.3 Prototype

unsigned char Meas_Pressure (unsigned int SensorConfig, unsigned char SampRate, signed int idata *PressResult )

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2.2.4 Inputs

Table 12 Meas_Pressure: Input Parameters Register / Address Type Name Description

R6 (MSB) R7 (LSB)

R5 unsigned char SampleRate Defines the number of system clock cycles

R3 signed int

*(PressResult+2) signed int RawTemperature Previous Raw Temperature value can optionally

*(PressResult+3) signed int LowPressureThre

*(PressResult+4) signed int HighPressureThr

unsigned int SensorConfig Defines Sensor Configuration (refer to Table 13

and Table 14)

(12 MHz RC Oscillator) divided by 8 which is waited between consecutive measurements.

Note: Only applicable if SensorConfig.2-0

[2POWN2:0] greater than 1 Sample

PressResult Pointer to an integer array in RAM to receive the

idata*

shold

eshold

measurement result

be used as input parameter. Refer to bit RAWTemp in SensorConfig.

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Table 13 Meas_Pressure: Input Parameter: SensorConfig[15:8] Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 RES RES RES RES HYST ARANGE PRANGE RAWTemp

RES RES bits have to be set to 0

HYST Select the thresholds for pressure hysteresis:

: Internal Configuration: 550kPa is the threshold from low to high pressure range

and 500kPa is the threshold from high to low pressure range. 1

: Customer Configuration - See (PressResult+3) and (PressResult+4)

ARANGE Automatic range selection for pressure measurement:

: Manual

: Automatic

PRANGE Pressure range: (ignored if SensorConfig.10[ARANGE]==1)

: Low range (500kPa)

: High range (900kPa)

RAWTemp Selects source of raw temperature data for compensation

: Perform new raw temperature measurement

: Use raw temperature data supplied in *(PressResult+2)

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Table 14 Meas_Pressure: Input Parameter: SensorConfig[7:0] Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Sens_Type RAW RES RES MODE 2POWN.2 2POWN.1 2POWN.0

Sens_Type Select Pressure Measurement

: Pressure Measurement

RAW Defines if the raw ADC result is compensated

: Temperature compensation is performed. Returns compensated & raw value

: No compensation is performed. Returns only raw value. If

SensorConfig bit RAWTemp is set to 1

, no RAW temperature measurement is

performed. If no compensation is performed, the autorange selection is disabled and the range has be set manually.

Note: See Table 16 for impact on ROM Library function output

RES RES bits have to be set to 0

Mode Pressure Mode:

: Average value

: Maximum value

2POWN[2:0] Number of ADC measurements that are taken and averaged

111

: 64 Samples

110

: 64 Samples

101

: 32 Samples

100

: 16 Samples

011

: 8 Samples

010

: 4 Samples

001

: 2 Samples

000

: 1 Sample

Table 15 Meas_Pressure: Input Parameter: SampleRate Bit7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SR.7 SR.6 SR.5 SR.4 SR.3 SR.2 SR.1 SR0

SR[7:0] Number of systemclock cycles divided by 8 between two consecutive samples (only

applicable if more than one sample is taken): 00

: No delay (fastest possible sample rate)

..4FH: Not allowed

..FFH: 1/sample rate (sample rate in systemclocks divided by 8)

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2.2.5 Outputs

Table 16 Meas_Pressure: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

xxxx.xxx1 xxxx.xx1xB: Overflow of ADC Result xxxx.x1xxB: Sensor Fault Wire Bond Check xxx1.xxxx

*(PressResult+0) signed int Compensated

Pressure

If Input Bit SensorConfig.6[RAW] == 0: 8000 0000 7FFF ( = 2048 kPa - 1 LSB where 1 LSB = 1/16 kPa)

If Input Bit SensorConfig.6[RAW] == 1: 8000

*(PressResult+1) signed int Raw Pressure 10 Bit ADC Result Value:

0000.00xx.xxxx.xxxx

*(PressResult+2) signed int Raw Temperature If Input Bit SensorConfig.6[RAW] == 0:

16 Bit scaled signed ADC Result Value

: Success

: Underflow of ADC Result

: VMIN warning

= -2048.0 kPa (Only theoretical)

= 0.0 kPa

= 2047.9375 kPa

since no compensation is performed

If Input Bit SensorConfig.6[RAW] == 1: 8000

since no temperature measurement is

performed

1) If the pressure measurement result is within the input range for which its accuracy is specified (e.g. 100 kPa - 900 kPa),

then the ADC underflow/overflow condition is due to a measurement failure and the measurement results are not valid. Otherwise, if the pressure measurement result is outside of this input range, then the ADC underflow/overflow bits and the pressure measurement results may be ignored.

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2.2.6 Automatic Pressure Range Operation

The Automatic Pressure Range feature is implemented as two separate pressure range calibrations within the SP37 A5 device. One calibration is optimized for a “low range” of 100-500kPa, the other for a “high range” of 500900kPa. When the Automatic Pressure Range feature is enabled, the SP37 applies the calibration from the most appropriate pressure range. For example, if the input pressure is within the low range, the low range calibration is used to obtain the best measurement accuracy. The Automatic Pressure Range feature is only available when compensated measurements are being performed.

The Automatic Pressure Range function includes a hysteresis feature to prevent “range toggling” at the boundary between high range and low range calibrations. The hysteresis is implemented as an upper threshold, and a lower threshold. During an Automatic Pressure Range measurement, if the input pressure is below the lower threshold value, the lower range calibration is used during measurement. If the input pressure is above the higher threshold value, the upper range calibration is used during measurement. If the input pressure is between the two threshold values, the calibration range from the previous pressure measurement is used. The values of the hysteresis thresholds may be either the Infineon default values, or values supplied as parameters to the pressure measurement functions.

To apply the default hysteresis values when using Automatic Pressure Range, the [SensorConfig.10[ARANGE]] bit within the [SensorConfig] parameter must be set to 1 [SensorConfig] parameter must be cleared to 0

. For the 900kPa SP37 A5 device, the default upper threshold

value is 550kPa, and the default lower threshold value is 500kPa. When these default threshold values are used, the pressure measurement error as specified within the SP37 A5 900kPa datasheet applies.

If the default hysteresis thresholds are not suitable, new threshold values may be supplied as parameters via the

[PressResult] array as shown in Table 16. In this case, both the [SensorConfig.10[ARANGE]] and [SensorConfig.11[HYST]] bits within the [SensorConfig] parameter must be set to 1

Chapter 2.2.4 for more details.

Note: If the lower hysteresis level is set to less than 500kPa, the measurement error is unspecified for input

pressures between the lower hysteresis threshold and 500kPa.

, and the [SensorConfig.11[HYST]] bit within the

. See Table 13 in

Note: The upper hysteresis level must not be set above 550kPa.

If Automatic Pressure Range is not desired, the pressure measurement function may be manually configured to use only the high range or only the low range. In this case, the [SensorConfig.10[ARANGE]] bit within the [SensorConfig] parameter must be cleared to 0 range calibration or low range calibration by being set to 1

, and the [SensorConfig.9[PRANGE]] bit is used to select high

or cleared to 0B, respectively.

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Meas_Pressure

SensorConfig .9

High Range (Bit 9 = 1)

Sens orConfig .10

Sens orConfig .6

Low Range (Bi t 9 = 0)

Manual (Bit 10 = 0)

OR Skip comp (Bit 6 = 1)

Automatic (Bit 10 = 1) AND Comp (Bit 6 = 0)

SensorConfig parameter :

Bi t 11 Selec t thresholds for press . hys teresis

0 = Factory-defaul t setting 1 = Customer specified

Bit 10 Automatic range selection

0 = Manual 1 = Automatic (Bit 9 will be ignored)

Bit 9 Pressure range( valid only i f Bi t 10 = 0)

0 = Low (e.g. 500 kPa) 1 = High (e.g . 900 k Pa)

Bit 7 Sensor type :

0 = Accel eration 1 = Pressure

Bit 6 Compensation selection

0 = bit 10 is av ailable for automatic range selec ti on

Compensation ski pped

1 = Onl y m anual is avai lable

Compensation avail able

Meas_Sensor

_PressLow

Current Pressure

Range

Low Range

High Range

Set Current Pressure

Range to high

Si ngle/Dual

Config

Single

END

Dual

Meas_Sensor

_PressLow

Meas_Sensor

_PressHigh

END END

END

Meas_Sensor

_PressLow

Pressure > High

Threshold

Meas_Sensor

_PressHigh

Meas_Sensor

_PressHigh

Yes

Pressure < Low

Threshold

Meas_Sensor

_PressLow

Set Current Pressure

Range to low

END

Yes

SensorConfig .7 = 1

(Pressure)

Tire Pressure Monitoring Sensor

ROM Library Functions

Figure 2 Flow Chart for configuration of SensorConfig for Meas_Pressure() function.

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2.2.7 Resource Usage

Table 17 Meas_Pressure: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG0

TMOD

Stack 13 Bytes2)

1) Only affected if more than 1 sample is taken

2) Two additional bytes, not included here, are needed to call the library function

, CFG1, CFG2, DIVIC, DPH, DPL, PSW, TCON1), TH01), TL01),

ROM Library Functions

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2.2.8 Execution Information

Table 18 Meas_Pressure: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Compensated with new raw temperature measurement, 2 samples

Execution Time Compensated when supplied with previously obtained raw temperature value, 2 samples

Execution Time Raw (uncompensated) pressure result, 2 samples

Execution Time for each additional sample for averaging

Execution Time in automatic range selection compensated Pressure result with new raw temperature measurement, 2 samples

Execution Time in automatic range compensated when supplied with previously obtained raw temperature value, 2 samples

Execution Time in automatic pressure range for each additional sample for averaging

Charge Consumption Compensated with new raw temperature measurement, 2 samples

Charge Consumption Compensated when supplied with previously obtained raw temperature value, 2 samples

Charge Consumption Raw (uncompensated) pressure result, 2 samples

Charge Consumption for each additional sample for averaging

comp,new

comp,prev

RAW

sample

autocomp,n

autocomp,p

rev

autosample

comp,new

comp,prev

RAW

sample

– 918 1017 µs DIVIC = 00H,

SensorConfig = 0081 SampleRate = 00

– 689 770 µs DIVIC = 00H,

SensorConfig = 0181 SampleRate = 00

– 305 334 µs DIVIC = 00H,

SensorConfig = 00C1 SampleRate = 00

– 54 60 µs SampleRate = 00

Only 1, 2, 4, 8, 16, 32, 64 samples possible

– 948 1010 µs DIVIC = 00H,

SensorConfig = 0481 SampleRate = 00

– 716 762 µs DIVIC = 00H,

SensorConfig = 0581 SampleRate = 00

– 54 59 µs SampleRate = 00

Only 1, 2, 4, 8, 16, 32, 64 samples possible

– 1,622 2,539 µC DIVIC = 00H,

SensorConfig = 0081 SampleRate = 00

– 1,173 1,9 µC DIVIC = 00H,

SensorConfig = 0181 SampleRate = 00

– 0,551 0,825 µC DIVIC = 00H,

SensorConfig = 00C1 SampleRate = 00

– 0,118 0,151 µC SampleRate = 00

Only 1, 2, 4, 8, 16, 32, 64 samples possible

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Table 18 Meas_Pressure: Execution Time and Charge Consumption (cont’d) Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Charge consumption in automatic range selection Compensated Pressure result

autocomp,

new

– 1,644 2,519 µC DIVIC = 00H,

SensorConfig = 0481 SampleRate = 00

with new raw temperature measurement, 2 samples

Charge Consumption in automatic range selection compensated when supplied

autocomp,

– 1,196 1,873 µC DIVIC = 00H,

SensorConfig = 0581 SampleRate = 00

with previously obtained raw temperature value, 2 samples

Charge Consumption in automatic pressure range for each additional sample for averaging

1) The execution time and charge consumption for automatic range selection have been verified when the proper pressure

range is selected.

autosampl

– 0,118 0,148 µC SampleRate = 00

Only 1, 2, 4, 8, 16, 32, 64 samples possible

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// Library function prototypes

#include "SP37_ROMLibrary.h"

void main() {

// Return value of pressure measurement is stored in StatusByte

unsigned char StatusByte;

// Input parameters for pressure measurement // Configure register to perform a 2-sample pressure measurement // Automatic Range Selection

unsigned int SensorConfig = 0x0481; unsigned char SampRate = 0x00;

// struct for pressure measurement results

struct{

signed int Pressure; signed int Raw_pressure; signed int Raw_temperature;

} idata Press_Result;

// Pressure measurement function call

StatusByte = Meas_Pressure(SensorConfig, SampRate, &Press_Result.Pressure);

if(!StatusByte) {

// Pressure measurement was successful

} else {

// Pressure measurement was not successful, underflow or // overflow of ADC result, Sensor Fault Wire Bond Check, // or VMIN warning occurred

}

Tire Pressure Monitoring Sensor

2.2.9 Code Example

ROM Library Functions

Figure 3 Code example for usage of Meas_Pressure()

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2.3 Scale_Pressure()

2.3.1 Description

A 450 kPa range TPMS sensor will typically transmit the pressure value as a single byte within an RF telegram: the pressure range 100…450 kPa is represented with an unsigned byte ranging from 0…255. A scale factor of

1.373 kPa/LSB is required to meet this typical requirement. The SP37 Meas_Pressure function, however, returns a signed integer value that represents pressure as 1/16 kPa/LSB. Conversion from 1/16 kPa/LSB to

1.373 kPa/LSB is therefore a commonly required task, but one that is not straightforward as care must be taken to avoid excessive rounding or loss of precision. The full scale error (FSE) of this function is less than 0.4%.

As a convenience, this Scale_Pressure( ) function performs this conversion. In addition, pressure bounds checking is performed so that 0 and 255 are returned for input pressure values below 100 kPa and above 450 kPa, respectively. Finally, to reduce the amount of data handling required by the application program, note that the input value to Scale_Pressure is passed as a pointer. This allows the same pointer to the Meas_Pressure() output structure *(PressResult+0) to be re-used as the input pointer to Scale_Pressure().

Note: Scale function is intended to provide backward compatibility with SP30 100…450kPa numeric

representation. The 100kPa and 450kPa bounds checking feature prevents this function from being useful outside of this range.

2.3.2 Actions

• Check 16 bit input value against 100 kPa and 450 kPa bounds, if value is outside of these bounds return 0 or

255, respectively

• Convert input value to unsigned 8 bit return value between 0 and 255

2.3.3 Prototype

unsigned char Scale_Pressure(signed int idata * PressureValue)

2.3.4 Inputs

Table 19 Scale_Pressure: Input Parameters Register / Address Type Name Description

R7 signed int

idata*

PressureValue Pointer to 16 bit input pressure value; Reuse of

Meas_Pressure output structure *(PressResult+0)

2.3.5 Outputs

Table 20 Scale_Pressure: Output values Register/ Address Type Name Description

R7 unsigned char Result 8 bit output pressure value

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2.3.6 Resource Usage

Table 21 Scale_Pressure: Resources Type Used or Modified

Registers R0, R2, R3, R4, R5, R6, R7 SFR A, B, PSW Stack 4 bytes

1) Two additional bytes, not included here, are needed to call the library function

2.3.7 Execution Information

Table 22 Scale_Pressure: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,188 0,317 µC DIVIC = 00

t – 121 133 µs DIVIC = 00

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// Library function prototypes

#include "SP37_ROMLibrary.h"

void main() {

// Return value of pressure measurement is stored in StatusByte

unsigned char StatusByte;

// 8-bit pressure value is stored in PressureByte

unsigned char PressureByte;

// Input parameters for pressure measurement

unsigned int SensorConfig = 0x0081; unsigned char SampRate = 0x00;

// struct for pressure measurement results

struct{

signed int Pressure; signed int Raw_pressure; signed int Raw_temperature;

} idata Press_Result;

// Pressure measurement function call

StatusByte = Meas_Pressure(SensorConfig, SampRate, &Press_Result.Pressure);

if(!StatusByte){

// Pressure measurement was successful

PressureByte = Scale_Pressure(&Press_Result.Pressure);

} else{

// Pressure measurement was not successful, underflow or // overflow of ADC result, Sensor Fault Wire Bond Check, // or VMIN warning occurred

PressureByte = 0;

}

// 8-bit scaled pressure value is in PressureByte. If pressure was // 100kPa or less, or there was an error in measurement, PressureByte // is set to 0. If measured pressure was 450kPa or more, PressureByte // is set to 255. Otherwise, PressureByte contains a value proportional // to measured pressure, scaled by 1.373kPa/LSB for pressure above 100kPa.

}

Tire Pressure Monitoring Sensor

2.3.8 Code Example

ROM Library Functions

Figure 4 Code example for usage of Scale_Pressure()

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2.4 Meas_Acceleration()

2.4.1 Description

This function performs an acceleration sensor measurement. The result can be either:

• Compensated for sensitivity, offset and temperature

• Output as raw value without performing the compensation The function can measure acceleration with up to 64 samples at a specified sample rate. The function will return

the average (arithmetic mean) acceleration value in order to compensate for noise. Optionally, this function can return the maximum value of the samples. The function performs a new temperature measurement for compensating the acceleration measurements, unless a previously measured raw temperature value is supplied. The number of samples and the raw temperature source are both determined by SensorConfig. SampleRate controls how frequently the measurement acquisitions occur and will not influence the measurement result under stable acceleration conditions. The device is set to IDLE mode during the delay between measurement acquisitions.

2.4.2 Actions

• Measure acceleration sensor with channel and number of samples given by SensorConfig

• Check wire bonds between the ASIC and the sensor die & sensor beam integrity

• Average the measurement(s), or (optionally) use the maximum raw measurement, to obtain a raw acceleration

value

• (optionally) Perform a raw temperature measurement

• (optionally) Compensate the raw acceleration value

2.4.3 Prototype

unsigned char Meas_Acceleration (unsigned int SensorConfig, unsigned char SampRate, signed int idata * AccelResult )

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2.4.4 Inputs

Table 23 Meas_Acceleration: Input Parameters Register / Address Type Name Description

R6 (MSB) R7 (LSB)

R5 unsigned char SampleRate Defines the number of system clock cycles

R3 signed int

*(AccelResult+2) signed int Raw Temperature Previous Raw Temperature value can optionally

unsigned int SensorConfig Defines Sensor Configuration (refer to Table 24

and Table 25)

(12 MHz RC Oscillator) divided by 8 which is waited between consecutive measurements.

Note: Only applicable if SensorConfig.2-0

[2POWN2:0] greater than 1 Sample

AccelResult Pointer to an integer array in RAM to receive the

idata*

measurement result

be used as input parameter. Refer to bit RAWTemp in SensorConfig.

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Table 24 Meas_Acceleration: Input Parameter: SensorConfig[15:8] Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 RES RES RES RES RES RES RES RAWTemp

RES Must be set to 0. RAWTemp Selects source of raw temperature data for compensation

: Perform new raw temperature measurement

: Use raw temperature data supplied in *(AccelResult+2)

Table 25 Meas_Acceleration: Input Parameter: SensorConfig[7:0] Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Sens_Type RAW RES RES MODE 2POWN.2 2POWN.1 2POWN.0

Sens_Type Select Pressure or Acceleration Measurement

: Acceleration Measurement

RAW Defines if the raw ADC result is compensated

: Temperature compensation is performed. Returns compensated & raw value

: No compensation is performed. Returns only raw value. If

SensorConfig bit RAWTemp is set to 1

, no RAW temperature measurement is

performed.

Note: See Table 29 for impact on ROM Library function output

RES Must be set to 0

Mode Acceleration Measure Mode:

: Average value

: Maximum value

2POWN[2:0] Number of ADC measurements that are taken and averaged

111

: 64 Samples

110

: 64 Samples

101

: 32 Samples

: 16 Samples

100

011

: 8 Samples

010

: 4 Samples

: 2 Samples

001

000

: 1 Sample

Table 26 Meas_Acceleration: Input Parameter: SampleRate Bit7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SR.7 SR.6 SR.5 SR.4 SR.3 SR.2 SR.1 SR0

SR[7:0] Number of systemclock cycles divided by 8 between two consecutive samples (only

applicable if more than one sample is taken and averaged): 00

: No delay (fastest possible sample rate)

..5EH: Not allowed

..FFH: 1/sample rate (sample rate in systemclocks divided by 8)

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2.4.5 Outputs

Table 27 Meas_Acceleration: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

xxxx.xxx1 xxxx.xx1xB: Overflow of ADC Result xxxx.x1xxB: Sensor Fault Wire Bond Check xxxx.1xxx xxx1.xxxx

*AccelResult+0 signed int Compensated

Acceleration

If Input Bit SensorConfig.6[RAW] == 0: 8000 0000 7FFF ( = 2048 g - 1 LSB where 1 LSB = 1/16 g)

If Input Bit SensorConfig.6[RAW] == 1: 8000

*AccelResult+1 signed int Raw Acceleration

Data

10 Bit ADC Result Value:

0000.00xx.xxxx.xxxx

*AccelResult+2 Singed int Raw Temperature If Input Bit SensorConfig.6[RAW] == 0:

16 Bit scaled signed ADC Result Value

: Success

: Underflow of ADC Result

: Sensor Fault Diagnosis Resistor

: VMIN warning

= -2048.0 g

= 0.0 g

= 2047.9375 g

since no compensation is performed

If Input Bit SensorConfig.6[RAW] == 1:

since no temperature measurement is

8000

performed

1) If the acceleration measurement result is within the input range for which its accuracy is specified (e.g. -115 g - 115 g), then

the ADC underflow/overflow condition is due to a measurement failure and the measurement results are not valid. Otherwise, if the acceleration measurement result is outside of this input range, then the ADC underflow/overflow bits and the acceleration measurement results may be ignored.

2.4.6 Resource Usage

Table 28 Meas_Acceleration: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG0

TMOD

Stack 13 Bytes

1) Only affected if more than 1 sample is taken

2) Two additional bytes, not included here, are needed to call the library function

, CFG1, CFG2, DIVIC, DPH, DPL, PSW, TCON1), TH01), TL01),

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2.4.7 Execution Information

Table 29 Meas_Acceleration: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Compensated with new raw temperature measurement, 2 samples

Execution Time Compensated when supplied with previously obtained raw temperature value, 2 samples

Execution Time Raw (uncompensated) acceleration result, 2 samples

Execution Time for each additional sample for averaging

Charge Consumption Compensated with new internal raw temperature measurement, 2 samples

Charge Consumption Compensated when supplied with previously obtained raw temperature value, 2 samples

Charge Consumption Raw (uncompensated) acceleration result, 2 samples

Charge Consumption for each additional sample for averaging

comp,new

comp,prevt

RAW

sample

comp,new

comp,prev

RAW

sample

– 909 1015 µs DIVIC = 00H,

SensorConfig = 0001 SampleRate = 00

– 655 767 µs DIVIC = 00H,

SensorConfig = 0101 SampleRate = 00

– 304 334 µs DIVIC = 00H,

SensorConfig = 0041 SampleRate = 00

– 64 71 µs SampleRate = 00

– 1,611 2,516 µC DIVIC = 00H,

SensorConfig = 0001 SampleRate = 00

– 1,125 1,87 µC DIVIC = 00H,

SensorConfig = 0101 SampleRate = 00

– 0,552 0,809 µC DIVIC = 00H,

SensorConfig = 0041 SampleRate = 00

– 0,135 0,17 µC SampleRate = 00

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// Library function prototypes

#include "SP37_ROMLibrary.h"

void main() {

// Return value of acceleration measurement is stored in StatusByte

unsigned char StatusByte;

// Input parameters for acceleration measurement

unsigned int SensorConfig = 0x0001; unsigned char SampRate = 0x00;

// struct for acceleration measurement results

struct{

signed int Acceleration; signed int Raw_acceleration; signed int Raw_temperature;

} idata Accel_Result;

// Acceleration measurement function call

StatusByte = Meas_Acceleration(SensorConfig, SampRate, &Accel_Result.Acceleration);

if(!StatusByte){

// Acceleration measurement was successful

} else{

// Acceleration measurement was not successful, underflow or

// overflow of ADC result, Sensor Fault Wire Bond Check,

// Sensor Fault Diagnosis Resistor, or VMIN warning occurred

}

Tire Pressure Monitoring Sensor

2.4.8 Code Example

ROM Library Functions

Figure 5 Code example for usage of Meas_Acceleration()

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2.5 Meas_Temperature()

2.5.1 Description

This function performs a temperature measurement and returns both raw and compensated temperature results. The Compensated Temperature result is compensated for sensitivity and offset errors. The Raw Temperature result is uncompensated and may be used as input for Meas_Sensor(), Meas_Pressure(), Meas_Acceleration() and Comp_Temperature().

2.5.2 Actions

• Measures the temperature sensor with 2 ADC samples for averaging (arithmetic mean).

• Compensate for offset using calibration data stored in FLASH (Compensated Temperature)

2.5.3 Prototype

unsigned char Meas_Temperature ( signed int idata * Temp_Result )

2.5.4 Inputs

Table 30 Meas_Temperature: Input Parameters Register / Address Type Name Description

R7 signed int

idata*

Temp_Result Pointer to an integer array in RAM to receive the

measurement result

2.5.5 Outputs

Table 31 Meas_Temperature: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

xxxx.xxx1 xxxx.xx1x xxx1.xxxx

*Temp_Result+0 signed int Compensated

Temperature

8000 0000 7FFF ( = 256 °C - 1 LSB where 1 LSB = 1/128 °C)

*Temp_Result+1 signed int Raw Temperature 16 Bit scaled signed ADC Result Value

: Success

: Underflow of ADC Result

: Overflow of ADC Result

: VMIN warning

= -256.0 °C

= 0.0 °C

= 255.9921875 °C

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2.5.6 Resource Usage

Table 32 Meas_Temperature: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG0, CFG1, CFG2, DIVIC, DPH, DPL, PSW Stack 9 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.5.7 Execution Information

Table 33 Meas_Temperature: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption

comp

– 668 726 µs DIVIC = 00H,

by default 2 ADC measurements are taken and averaged

– 1,2 1,82 µC DIVIC = 00H,

by default 2 ADC measurements are taken and averaged

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// Library function prototypes

#include "SP37_ROMLibrary.h"

void main() {

// Return value of temperature measurement is stored in StatusByte

unsigned char StatusByte;

// struct for temperature measurement results

struct{

signed int Temperature;

signed int Raw_temperature; } idata Temp_Result;

// Temperature measurement function call

StatusByte = Meas_Temperature(&Temp_Result.Temperature);

if(!StatusByte){

// Temperature measurement was successful

} else{

// Temperature measurement was not successful, underflow or

// overflow of ADC result or VMIN warning occurred

}

Tire Pressure Monitoring Sensor

2.5.8 Code Example

ROM Library Functions

Figure 6 Code example for usage of Meas_Temperature()

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2.6 Raw_Temperature()

2.6.1 Description

This function performs a raw temperature measurement. The Raw Temperature result is uncompensated and may be used as input for Meas_Sensor(), Meas_Pressure(), Meas_Acceleration() and Comp_Temperature().

2.6.2 Actions

• Measures the temperature sensor with 2 ADC samples for averaging (arithmetic mean)

2.6.3 Prototype

unsigned char Raw_Temperature ( signed int idata * TempResult )

2.6.4 Inputs

Table 34 Raw_Temperature: Input Parameters Register / Address Type Name Description

R7 signed int

idata*

TempResult Pointer to an integer array in RAM to receive the

measurement result

2.6.5 Outputs

Table 35 Raw_Temperature: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

xxxx.xxx1 xxxx.xx1x xxx1.xxxx

*Temp_Result+0 signed int Raw Temperature 16 Bit scaled signed ADC Result Value

: Success

: Underflow of ADC Result

: Overflow of ADC Result

: VMIN warning

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2.6.6 Resource Usage

Table 36 Raw_Temperature: Resources Type Used or Modified

Registers R0, R3, R4, R5, R6, R7 SFR ACC, B, CFG0, CFG1, CFG2, DPH, DPL, PSW Stack 5 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.6.7 Execution Information

Table 37 Raw_Temperature: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption

RAW

– 274 299 µs DIVIC = 00H,

by default 2 ADC measurements are taken and averaged

– 0,513 0,773 µC DIVIC = 00H,

by default 2 ADC measurements are taken and averaged

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2.7 Comp_Temperature()

2.7.1 Description

This function will convert a previously obtained raw temperature value into a compensated temperature value. This function can be called after a pressure, acceleration or raw temperature measurement to compensate the raw temperature. Thus, the current ambient temperature is obtained without taking an extra temperature measurement.

2.7.2 Actions

• Compensate raw temperature data using calibration data stored in FLASH.

2.7.3 Prototype

unsigned char Comp_Temperature (signed int idata TempRawIn, signed int idata * TempResult)

2.7.4 Inputs

Table 38 Comp_Temperature: Input Parameters Register / Address Type Name Description

R6(MSB), R7(LSB)

signed int idata

TempRawIn Raw measurement value (gathered from

Meas_Pressure() or Meas_Acceleration() or Raw_Temperature)

R5 signed int

idata*

Temp_Result Pointer to an integer array in RAM to receive the

measurement result

2.7.5 Outputs

Table 39 Comp_Temperature: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

xxxx.xxx1 xxxx.xx1x

*Temp_Result signed int Compensated

Temperature

8000 0000 7FFF ( = 256 °C - 1 LSB where 1 LSB = 1/128 °C)

*Temp_Result+1 signed int Raw Temperature 16 Bit scaled signed ADC Result Value

: Success

: Underflow of Result

: Overflow of Result

= -256.0 °C

= 0.0 °C

= 255.9921875 °C

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2.7.6 Resource Usage

Table 40 Comp_Temperature: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, DPH, DPL, PSW Stack 4 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.7.7 Execution Information

Table 41 Comp_Temperature: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,63 1,089 µC DIVIC = 00

t – 420 454 µs DIVIC = 00

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// Library function prototypes

#include "SP37_ROMLibrary.h"

void main() {

// Return value of pressure and temperature measurement is stored in StatusByte

unsigned char StatusByte;

// Input parameters for pressure measurement

unsigned int SensorConfig = 0x0081; unsigned char SampRate = 0x00;

// struct for pressure measurement results

struct{

signed int Pressure;

signed int Raw_pressure;

signed int Raw_temperature; } idata Press_Result;

// struct for compensated temperature results

struct{

signed int Temperature;

signed int Raw_temperature; } idata Temp_Result;

// Pressure measurement function call

StatusByte = Meas_Pressure(SensorConfig, SampRate, &Press_Result.Pressure);

if(!StatusByte){

// Pressure measurement was successful

} else{

// Pressure measurement was not successful, underflow or

// overflow of ADC result, Sensor Fault Wire Bond Check,

// or VMIN warning occurred

}

// Compensate Temperature function call

StatusByte = Comp_Temperature(Press_Result.Raw_temperature, &Temp_Result.Temperature);

if(!StatusByte){

// Temperature compensation was successful

} else{

// Temperature compensation was not successful, underflow or

// overflow during compensation occurred

}

Tire Pressure Monitoring Sensor

2.7.8 Code Example

ROM Library Functions

Figure 7 Code example for usage of Comp_Temperature()

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2.8 Meas_Supply_Voltage()

2.8.1 Description

This function performs a battery voltage measurement and returns both raw and compensated voltage results. The compensated battery voltage result is compensated for offset error.

2.8.2 Actions

• Measure the supply voltage sensor with 2 ADC samples for averaging

• Compensate for offset using calibration data stored in FLASH

2.8.3 Prototype

unsigned char Meas_Supply_Voltage ( signed int idata * Batt_Result )

2.8.4 Inputs

Table 42 Meas_Supply_Voltage: Input Parameters Register / Address Type Name Description

R7 signed int

idata*

Batt_Result Pointer to an integer array in RAM to receive the

measurement result

2.8.5 Outputs

Table 43 Meas_Supply_Voltage: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

xxxx.xxx1 xxxx.xx1x

*Batt_Result+0 signed int Compensated

battery voltage

8000 0000 7FFF ( = 4096 mV - 1 LSB where 1 LSB = 1/8 mV)

*Batt_Result+1 signed int Raw battery voltage 10 Bit ADC Result Value:

0000.00xx.xxxx.xxxx

: Success

: Underflow of ADC Result

: Overflow of ADC Result

= -4096.0 mV (Only theoretical number)

= 0.0 mV

= 4095.875 mV

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2.8.6 Resource Usage

Table 44 Meas_Supply_Voltage: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG0, CFG1, CFG2, DIVIC, DPH, DPL, PSW Stack 3 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.8.7 Execution Information

Table 45 Meas_Supply_Voltage: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption

t – 373 405 µs DIVIC = 00

by default 2 ADC measurements are taken and averaged

Q – 0,634 1,01 µC DIVIC = 00

by default 2 ADC measurements are taken and averaged

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// Library function prototypes

#include "SP37_ROMLibrary.h"

void main() {

// Return value of battery voltage measurement is stored in StatusByte

unsigned char StatusByte;

// struct for battery voltage measurement results

struct{

signed int Voltage;

signed int Raw_voltage; } idata Volt_Result;

// Battery voltage measurement function call

StatusByte = Meas_Supply_Voltage(&Volt_Result.Voltage);

if(!StatusByte){

// Battery voltage measurement was successful

} else{

// Battery voltage measurement was not successful, underflow or

// overflow of ADC result occurred

}

Tire Pressure Monitoring Sensor

2.8.8 Code Example

ROM Library Functions

Figure 8 Code example for usage of Meas_Supply_Voltage()

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2.9 Start_Supply_Voltage()

2.9.1 Description

The battery voltage typically shows a significant drop during RF transmission, when a considerable current is drawn. Calling the monolithic function Meas_Supply_Voltage() during RF transmission is often not feasible because of its execution time.

A set of three functions to allow battery voltage measurement during RF transmission has been implemented;

Start_Supply_Voltage(), Trig_Supply_Voltage() and Get_Supply_Voltage(). These functions must be called

in this particular sequence, and each function is separately described in detail. Start_Supply_Voltage() enables and configures the ADC, allows settling of the analogue ADC part, and places the

ADC into standby state. It must be called prior to calling the Trig_Supply_Voltage() function.

2.9.2 Actions

• Prepare the ADC and the Supply Voltage Sensor for a measurement

2.9.3 Prototype

unsigned char Start_Supply_Voltage ( void )

2.9.4 Inputs

Table 46 Start_Supply_Voltage: Input Parameters Register / Address Type Name Description

None --- --- ---

2.9.5 Outputs

Table 47 Start_Supply_Voltage: Output values Register/ Address Type Name Description

R7 unsigned char Status Byte Always returns 0

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2.9.6 Resource Usage

Table 48 Start_Supply_Voltage: Resources Type Used or Modified

Registers R7 SFR ACC Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.9.7 Execution Information

Table 49 Start_Supply_Voltage: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,018 0,030 µC DIVIC = 00

t – 12 13 µs DIVIC = 00

2.9.8 Code Example

See Figure 9 “Code example for usage of the functions Start_Supply_Voltage, Trig_Supply_Voltage and

Get_Supply_Voltage()” on Page 68

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2.10 Trig_Supply_Voltage()

2.10.1 Description

Trig_Supply_Voltage() is the second part of a set of three functions to measure the battery voltage during RF transmission. It is called after Start_Supply_Voltage(), and triggers an ADC battery voltage measurement. Upon the call of this function the ADC resumes from standby, performs a measurement and then goes back to standby, keeping the result. Typically this function is called by the application immediately after an RF datagram byte is shifted into SFR RFD to prevent disruption of RF data transmission.

2.10.2 Actions

• Bring ADC from standby to active state

• Measure the supply voltage sensor with ADC

• Place ADC into standby state

2.10.3 Prototype

void Trig_Supply_Voltage ( void )

2.10.4 Inputs

Table 50 Trig_Supply_Voltage: Input Parameters Register / Address Type Name Description

None --- --- ---

2.10.5 Outputs

Table 51 Trig_Supply_Voltage: Output values Register/ Address Type Name Description

None --- --- ---

2.10.6 Resource Usage

Table 52 Trig_Supply_Voltage: Resources Type Used or Modified

Registers --SFR --Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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2.10.7 Execution Information

Table 53 Trig_Supply_Voltage: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption Q

DIVIC=0

DIVIC=3

DIVIC=0

DIVIC=3

– 3 4 µs DIVIC = 00 – 192 208 µs DIVIC = 03 – 0,005 0,008 µC DIVIC = 00 – 0,154 0,354 µC DIVIC = 03

2.10.8 Code Example

See Figure 9 “Code example for usage of the functions Start_Supply_Voltage, Trig_Supply_Voltage and

Get_Supply_Voltage()” on Page 68

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2.11 Get_Supply_Voltage()

2.11.1 Description

Get_Supply_Voltage() is the third part of a set of three functions to measure the battery voltage during RF transmission. It reads the measured value obtained during Trig_Supply_Voltage(), turns off the ADC, and performs battery voltage compensation. Typically this function is called by the application after the RF transmission is finished.

2.11.2 Actions

• Read the ADC result register

• Turn off ADC

• Compensate the result for offset using calibration data stored in FLASH

2.11.3 Prototype

unsigned char Get_Supply_Voltage ( signed int idata * Batt_Result )

2.11.4 Inputs

Table 54 Get_Supply_Voltage: Input Parameters Register / Address Type Name Description

R7 signed int

idata*

Batt_Result Pointer to an integer array in RAM to receive the

measurement result

2.11.5 Outputs

Table 55 Get_Supply_Voltage: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

xxxx.xxx1 xxxx.xx1x

*Batt_Result+0 signed int Compensated

battery voltage

8000 0000 7FFF ( = 4096 mV - 1 LSB where 1 LSB = 1/8 mV)

*Batt_Result+1 signed int Raw battery voltage 10 Bit ADC Result Value:

0000.00xx.xxxx.xxxx

: Success

: Underflow of ADC Result

: Overflow of ADC Result

= -4096.0 mV (Only theoretical number)

= 0.0 mV

= 4095.875 mV

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2.11.6 Resource Usage

Table 56 Get_Supply_Voltage: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG1, CFG2, DIVIC, DPH, DHL, PSW Stack 3 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.11.7 Execution Information

Table 57 Get_Supply_Voltage: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,308 0,532 µC DIVIC = 00

t – 205 222 µs DIVIC = 00

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// Library function prototypes

#include "SP37_ROMLibrary.h"

void main() {

// Return value of battery voltage measurement is stored in StatusByte

unsigned char StatusByte;

// struct for battery voltage measurement results

struct{

signed int Voltage;

signed int Raw_voltage; } idata Volt_Result;

// ADC setup for supply voltage measurement is done before real time critical // function is executed

Start_Supply_Voltage();

// real time critical function starts here

// ...

Trig_Supply_Voltage();

// ...

// end of real time critical function

// Get the measurement result after the real time critical function

StatusByte = Get_Supply_Voltage(&Volt_Result.Voltage);

if(!StatusByte){

// Battery voltage measurement was successful

} else{

// Battery voltage measurement was not successful, underflow or

// overflow of ADC result occurred

}

Tire Pressure Monitoring Sensor

2.11.8 Code Example

ROM Library Functions

Figure 9 Code example for usage of the functions Start_Supply_Voltage, Trig_Supply_Voltage and

Get_Supply_Voltage()

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2.12 ADC_Selftest()

2.12.1 Description

The ADC self test is a combination of three measurements that use various channels as input and reference for the ADC. The output of this function is the delta deviation from the ideal value.

2.12.2 Actions

• Perform three ADC measurements

• Calculate delta from ideal value

2.12.3 Prototype

unsigned char ADC_Selftest(signed int idata * Delta)

2.12.4 Inputs

Table 58 ADC_Selftest: Input Parameters Register / Address Type Name Description

R7 signed int

idata*

Delta Pointer to an integer array in RAM to receive the

ADC measurement result

2.12.5 Outputs

Table 59 ADC_Selftest: Output values Register/ Address Type Name Description

R7 unsigned char StatusByte 0000.0000

xxxx.xxx1 xxxx.xx1x

*Delta signed int

idata*

Delta The ADC can be considered as working when the

value of Delta is between +/-6 LSBs after a call of this function during which the supply voltage was constant.

: Success

: Underflow of ADC Result

: Overflow of ADC Result

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2.12.6 Resource Usage

Table 60 ADC_Selftest: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG0, CFG1, CFG2, DIVIC, DPH, DPL,PSW Stack 7 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.12.7 Execution Information

Table 61 ADC_Selftest: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption

t – 645 701 µs DIVIC = 00

3 Numbers of ADC measurements are taken

Q – 1,2 1,84 µC DIVIC = 00

taken

3 ADC measurements are

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2.13 Powerdown()

2.13.1 Description

This function forces the device to POWER DOWN state.

2.13.2 Actions

• If an RF Transmission is in process, wait until it has completed

• If the SFR ITPR has been updated, wait for the Interval Timer to initialize

• Enter POWER DOWN state

2.13.3 Prototype

void Powerdown(void)

2.13.4 Inputs

ROM Library Functions

Table 62 Powerdown: Input Parameters Register / Address Type Name Description

None --- --- ---

2.13.5 Outputs

Table 63 Powerdown: Output values Register/ Address Type Name Description

None --- --- ---

2.13.6 Resource Usage

Table 64 Powerdown: Resources Type Used or Modified

Registers --SFR ACC, CFG0, CFG1, RFS Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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2.13.7 Execution Information

Table 65 Powerdown: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption

t – 11,36 21,6 µs DIVIC = 00

entering PDWN

Q – 0,018 0,053 µC DIVIC = 00

entering PDWN

, ITinit = 0, RFSE = 1 before

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2.14 ThermalShutdown()

2.14.1 Description

This function forces the device to THERMAL SHUTDOWN state. The application should call this function whenever the ambient temperature is close to the maximum operating

range (this can be detected by using Meas_Temperature()) to protect the device while the ambient temperature is above the specified operating conditions. If this function is called when the temperature is below the TMAX threshold, the function will return without any action and the application program will continue uninterrupted. If the temperature is above the TMAX threshold, the TMAX threshold will be reduced (software hysteresis) and the THERMAL SHUTDOWN state is entered.

2.14.2 Actions

• Turn on the TMAX Detector

• Enter THERMAL SHUTDOWN state with hysteresis if TMAX Detector is set.

2.14.3 Prototype

void ThermalShutdown(void)

2.14.4 Inputs

Table 66 ThermalShutdown: Input Parameters Register / Address Type Name Description

None --- --- ---

2.14.5 Outputs

Table 67 ThermalShutdown: Output values Register/ Address Type Name Description

None --- --- ---

2.14.6 Resource Usage

Table 68 ThermalShutdown: Resources Type Used or Modified

Registers R7 SFR ACC, CFG0, DPH, DPL, PSW Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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2.14.7 Execution Information

Table 69 ThermalShutdown: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption Q

T<TMAX

T>TMAX

T<TMAX

T>TMAX

– 73 79 µs Temp. < TMAX: function will return

without any action, DIVIC = 00

– 71 77 µs Temp. > TMAX: function will enter

THERMAL SHUTDOWN state, DIVIC = 00

– 0,109 0,188 µC Temp. < TMAX: function will return

without any action, DIVIC = 00

– 0,106 0,183 µC Temp. > TMAX: function will enter

THERMAL SHUTDOWN state, DIVIC = 00

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2.15 StartXtalOsc()

2.15.1 Description

This function enables the crystal oscillator clock and delays for a defined amount of time. The delay time should be long enough that the crystal oscillator is stable, which is determined by the crystal startup time (see [1]). The minimum/maximum tolerance of the delay time may be derived by considering the tolerance of the 12 MHz RC Oscillator (see [1]).

2.15.2 Actions

• Enable the crystal oscillator clock

• Wait in IDLE for set Delay time

2.15.3 Prototype

signed char StartXtalOsc(unsigned char Delay)

2.15.4 Inputs

Table 70 StartXtalOsc: Input Parameters Register / Address Type Name Description

R7 unsigned char Delay Delay time to wait in IDLE after XTAL is enabled.

Duration[µs] = Delay x 42.67[µs]

2.15.5 Outputs

Table 71 StartXtalOsc: Output values Register/Address Type Name Description

R7 signed char StatusByte StatusByte:

0: XTAL started and delay passed

-1: XTAL already on (no action)

2.15.6 Resource Usage

Table 72 StartXtalOsc: Resources Type Used or Modified

Registers R7 SFR ACC, B, CFG0, DPTR, DIVIC, PSW, REF, TCON, TH0, TL0, TMOD Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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// Library function prototypes

#include "SP37_ROMLibrary.h" #include "Reg_SP37.h"

void main() {

// Return value of start xtal oscillator is stored in StatusByte

unsigned char StatusByte;

// Input parameters for start xtal oscillator

unsigned char Delay = 33;

// Start xtal oscillator function call

StatusByte = StartXtalOsc(Delay);

}

Tire Pressure Monitoring Sensor

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2.15.7 Execution Information

Table 73 StartXtalOsc: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption

1) Values are obtained by extrapolation, not by characterization

t t t Q Q Q

delta

– 1323 1440 µs DIVIC is 0; delay is 30 – 1750 1901 µs DIVIC is 0; delay is 40 – 52,7 56,1 µs DIVIC is 0; delta delay is 1 – 1,22 2,15 µC DIVIC is 0; delay is 30 – 1,6 2,83 µC DIVIC is 0; delay is 40 – 0,05 0,09 µC DIVIC is 0; delta delay is 1

2.15.8 Code Example

Figure 10 Code example for usage of StartXtalOsc()

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2.16 StopXtalOsc()

2.16.1 Description

This function disables the crystal oscillator clock if no other peripherals are using it. Therefore, peripherals using the crystal oscillator should be disabled prior to calling this function.

2.16.2 Actions

• Attempt to disable the crystal oscillator clock.

2.16.3 Prototype

signed char StopXtalOsc(void)

2.16.4 Inputs

Table 74 StopXtalOsc: Input Parameters Register / Address Type Name Description

None --- --- ---

2.16.5 Outputs

Table 75 StopXtalOsc: Output values Register/Address Type Name Description

R7 signed char StatusByte StatusByte:

0: XTAL stopped

-1: XTAL already off (no action)

-2: XTAL not stopped because it is still needed (e.g. due to an ongoing RF transmission)

2.16.6 Resource Usage

Table 76 StopXtalOsc: Resources Type Used or Modified

Registers R7 SFR ACC,B, CFG0, DPTR, PSW, RFS, TMOD Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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// Library function prototypes

#include "SP37_ROMLibrary.h" #include "Reg_SP37.h"

// Defines

#define bitmask_TMOD_CLK 0x08 #define bitmask_RFS_RFSE 0x02

void main() {

// Return value of stop xtal oscillator is stored in StatusByte

signed char StatusByte;

while (!(RFS & bitmask_RFS_RFSE)); // Wait for RF Transmission to end RFC &= ~0x03; // Disable PA & PLL TMOD &= ~bitmask_TMOD_CLK; // Clear TMOD_CLK

StatusByte = StopXtalOsc(); // Stop XTAL oscillator

if(StatusByte != -2){

// Xtal oscillator is stopped or was already off

}

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2.16.7 Execution Information

Table 77 StopXtalOsc: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,035 0,058 µC DIVIC = 00

t – 20 22 µs DIVIC = 00

2.16.8 Code Example

Figure 11 Code example for usage of StopXtalOsc()

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2.17 PLL_Ref_Signal_Check()

2.17.1 Description

This function can be called prior to VCO_Tuning() routine to test the lowest and highest VCO tuning curves that are disjoint in terms of operating frequencies. If the PLL Lock Detector indicates lock for both of the disjoint VCO tuning curves, a malfunction of the Crystal Resonator is most likely the source of the fault.

2.17.2 Actions

• Select the lowest tuning curve and check the PLL Lock Detector result

• Select the highest tuning curve and check the PLL Lock Detector result

2.17.3 Prototype

signed char PLL_Ref_Signal_Check(void)

2.17.4 Inputs

Table 78 PLL_Ref_Signal_Check: Input Parameters Register / Address Type Name Description

None --- --- ---

2.17.5 Outputs

Table 79 PLL_Ref_Signal_Check: Output values Register/Address Type Name Description

R7 signed char StatusByte StatusByte:

0: PLL Reference Signal available

-1: No PLL Reference Signal available

2.17.6 Resource Usage

Table 80 PLL_Ref_Signal_Check: Resources Type Used or Modified

Registers R7 SFR ACC, B, PSW, DIVIC, DPTR Stack 2 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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2.17.7 Execution Information

Table 81 PLL_Ref_Signal_Check: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,41 0,71 µC DIVIC = 00

t – 273 295 µs DIVIC = 00

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2.18 VCO_Tuning()

2.18.1 Description

This function selects an appropriate tuning curve for the VCO and enables the PLL. If no proper tuning curve could be selected the PLL will be disabled before the function returns with an error result.

Notes

1. If RF transmission is not performed immediately after this function is called, it is recommended to disable the PLL by clearing SFR bit RFC.1[ENPLL] to reduce the current consumption.

2. Re-Calibration of the tuning curve is necessary when than 70 °C

changes more than 800mV or T

BAT

changes more

Ambient

2.18.2 Actions

• Select appropriate tuning curve

• Enable PLL for a RF transmission

• Wait until PLL is locked

2.18.3 Prototype

signed char VCO_Tuning(void)

2.18.4 Inputs

Table 82 VCO_Tuning: Input Parameters Register / Address Type Name Description

None void --- ---

2.18.5 Outputs

VCO_Tuning: Output values

R7 signed char StatusByte StatusByte:

0: Success of VCO Tuning

-1: VCO Tuning not successful, PLL disabled

-2: XTAL not enabled (crystal required)

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2.18.6 Resource Usage

Table 83 VCO_Tuning: Resources Type Used or Modified

Registers R0, R1, R5, R6, R7 SFR ACC, DIVIC, PSW, RFC Stack 4 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.18.7 Execution Information

Table 84 VCO_Tuning: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption Q

firstTUN

reTUN

firstTUN

reTUN

– 2360 2560 µs First tuning (after RESET), DIVIC is 00 – 915 989 µs Re-tuning, DIVIC is 00 – 14,2 24,1 µC First tuning (after RESET), DIVIC is 00 – 5,524 9,2 µC Re-tuning, DIVIC is 00

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2.19 IntervalTimerCalibration()

2.19.1 Description

This function initiates a calibration of the Interval Timer precounter (ITPL and ITPH) to obtain a specific interval timer timebase between 1Hz and 20Hz. The function can work with both clock sources (12MHz RC Clock and Crystal clock), utilizing a special timer mode.

Note: To obtain the best possible Interval Timer accuracy, this function should be called after the crystal oscillator

has already been enabled.

In case the crystal oscillator is used the crystal frequency in Hz divided by 2 has to be stored in the FLASH user configuration sector at address 57FA not within the range of 9 MHz to 10 MHz a default clock frequency of 9.843750 MHz (XTAL/2 for 315 MHz carrier) is assumed for the tuning. In addition, this function automatically calibrates the LF On/Off Timer precounter (SFR LFOOTP) to 50 ms.

(MSByte) to 57FCH (LSByte). If the value found at this FLASH location is

2.19.2 Actions

• Calibrate the interval timer precounter (SFR ITPL, SFR ITPH) to the value passed in WU_Frequency

• Calibrate the LF On/Off Timer precounter (SFR LFOOTP) to 50 ms

2.19.3 Prototype

signed char IntervalTimerCalibration(unsigned char WU_Frequency)

2.19.4 Inputs

Table 85 IntervalTimerCalibration: Input Parameters Register / Address Type Name Description

R7 unsigned char WU_Frequency Base frequency of the interval timer precounter

[Hz] 1dec: 1 Hz (precounter time ~1000 ms) 2dec: 2 Hz (precounter time ~500 ms) ... 19dec: 19 Hz (precounter time ~53 ms) 20dec: 20 Hz (precounter time ~50 ms)

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2.19.5 Outputs

Table 86 IntervalTimerCalibration: Output values Register/ Address Type Name Description

R7 signed char StatusByte StatusByte:

0: Success

-1: No valid crystal frequency found in FLASH

-2: Input parameter out of range

2.19.6 Resource Usage

Table 87 IntervalTimerCalibration: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG0, DPTR, ITPH, ITPL, LFOOTP, PSW, TCON, TH0, TH1, TL0, TL1,

TMOD

Stack 2 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.19.7 Execution Information

Table 88 IntervalTimerCalibration: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Execution Time Charge

Consumption Charge

Consumption

1) Values are obtained by extrapolation, not by characterization

12Mhz

– 1190 1680 µs DIVIC = 00H, Clock Source is

12 MHz RC HF Oscillator

XTAL

12MHz

XTAL

– 1130 1570 µs DIVIC = 00HClock Source is XTAL – 1,23 2,56 µC DIVIC = 00H, Clock Source is

12 MHz RC HF Oscillator

– 1,60 3,04 µC DIVIC = 00HClock Source is XTAL

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2.20 LFBaudrateCalibration()

2.20.1 Description

Calling this function calibrates the LF baudrate divider using the crystal oscillator as a frequency reference, thus reducing the impact of offset and the current drift of the LF RC Oscillator upon the LF baudrate accuracy.

It is mandatory to call this function prior to the first use of the LF Receiver. The calibrated SFR LFDIV value may be stored in the FLASH and loaded into SFR LFDIV anytime the

LF Receiver is operated. If this calibration is performed regularly by the application, the bitrate tolerance of the transmitted LF data may be increased beyond the value normally specified (see [1]).

Prior to calling this function the crystal oscillator must be enabled by calling StartXtalOsc() and the crystal frequency in Hz divided by 2 has to be stored in the FLASH user configuration sector at address 57FA to 57FC clock frequency of 9.843750 MHz (XTAL/2 for 315 MHz carrier) is used for the tuning and the function returns an error in the StatusByte and sets SFR LFDIV to a nominal value.

(LSByte). If the value found at this FLASH location is not within the range of 9 MHz to 10 MHz a default

(MSByte)

2.20.2 Actions

• Set SFR LFDIV according to the current frequency of the LF RC Oscillator

2.20.3 Prototype

signed char LFBaudrateCalibration(unsigned int baudrate)

2.20.4 Inputs

Table 89 LFBaudrateCalibration: Input Parameters Register / Address Type Name Description

R6, R7 unsigned int baudrate Baudrate

3900dec: 3900 baud

2.20.5 Outputs

Table 90 LFBaudrateCalibration: Output values Register/ Address Type Name Description

R7 signed char StatusByte StatusByte:

0: Success

-1: XTAL frequency out of range

-2: XTAL not enabled or input parameter out of range

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2.20.6 Resource Usage

Table 91 LFBaudrateCalibration: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, CFG0, DPTR, LFDIV, PSW, TCON, TMOD, TH0, TH1, TL0, TL1 Stack 4 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.20.7 Execution Information

Table 92 LFBaudrateCalibration: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption

1) Values are obtained by extrapolation, not by characterization

XTAL

– 983 1070 µs Baudrate = 3900

DIVIC = 00

– 1,57 2,57 µC Baudrate = 3900

DIVIC = 00

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2.21 SMulIntInt() (16Bit * 16Bit)

2.21.1 Description

This function multiplies the first signed int value (16 bit) Multiplicand1 by the second signed int value (16bit) Multiplicand2 and produces a 32-bit signed result.

2.21.2 Actions

• Perform multiplication

2.21.3 Prototype

void SMulIntInt(signed int idata * Multiplicand1, signed int idata * Multiplicand2, signed long idata * Product)

2.21.4 Inputs

Table 93 SMulIntInt: Input Parameters Register / Address Type Name Description

R7 signed int

idata*

R5 signed int

idata*

R3 signed long

idata*

Multiplicand1 Pointer to Multiplicand1

Multiplicand2 Pointer to Multiplicand2

Product Pointer to an long array in RAM to the 32 Bit

multiplication Product (Multiplicand1 * Multiplicand2)

2.21.5 Outputs

Table 94 SMulIntInt: Output values Register/ Address Type Name Description

None --- --- ---

2.21.6 Resource Usage

Table 95 SMulIntInt: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, PSW Stack 2 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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2.21.7 Execution Information

Table 96 SMulIntInt: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,112 0,194 µC DIVIC = 00

t – 75 81 µs DIVIC = 00

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2.22 UDivLongLong() (32Bit : 32Bit)

2.22.1 Description

This function divides the unsigned long value (32 bit) Dividend by the unsigned long value (32 bit) Divisor.

2.22.2 Actions

• Perform division

2.22.3 Prototype

unsigned long UDivLongLong(unsigned long idata * Dividend, unsigned long idata * Divisor)

2.22.4 Inputs

Table 97 UDivLongLong: Input Parameters Register / Address Type Name Description

R7 unsigned long

idata*

R5 unsigned long

idata*

Dividend Pointer to 32 bit Dividend

Divisor Pointer to 32 bit Divisor

2.22.5 Outputs

Table 98 UDivLongLong: Output values Register/ Address Type Name Description

R4(MSB), R5, R6, R7(LSB)

Note: The output value for the remainder can be found in R0 (MSB), R1, R2, R3 (LSB).

unsigned long Quotient 32 bit Quotient of the division (Dividend / Divisor)

2.22.6 Resource Usage

Table 99 UDivLongLong: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R6, R7 SFR ACC, B, DPH, DPL, PSW Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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2.22.7 Execution Information

Table 100 UDivLongLong: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,581 1,004 µC DIVIC = 00

t – 387 418 µs DIVIC = 00

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2.23 UDivIntInt() (16Bit : 16Bit)

2.23.1 Description

This function divides the unsigned int value (16 bit) Dividend by the unsigned int value (16 bit) Divisor.

2.23.2 Actions

• Perform division

2.23.3 Prototype

unsigned int UDivIntInt(unsigned int Dividend, unsigned int Divisor)

2.23.4 Inputs

Table 101 UDivIntInt: Input Parameters Register / Address Type Name Description

R6(MSB) R7(LSB)

R4(MSB) R5(LSB)

unsigned int Dividend 16 bit Dividend

unsigned int Divisor 16 bit Divisor

2.23.5 Outputs

Table 102 UDivIntInt: Output values Register/ Address Type Name Description

R6(MSB), R7(LSB)

Note: The output value for the remainder can be found in R4 (MSB) and R5 (LSB).

unsigned int Quotient 16 bit Quotient of the division (Dividend / Divisor)

2.23.6 Resource Usage

Table 103 UDivIntInt: Resources Type Used or Modified

Registers R0, R4, R5, R6, R7 SFR ACC, B, PSW Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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2.23.7 Execution Information

Table 104 UDivIntInt: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,156 0,270 µC DIVIC = 00

t – 104 113 µs DIVIC = 00

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2.24 CRC8_Calc()

2.24.1 Description

This function calculates the CRC-8 checksum for a memory area in RAM using a fixed polynomial (x8+x2+x+1). The CRC-8 calculation starts with a defined preload value.

2.24.2 Actions

• Calculate CRC-8

2.24.3 Prototype

unsigned char CRC8_Calc(unsigned char Preload, unsigned char idata * BlockStart, unsigned char BlockLength)

2.24.4 Inputs

Table 105 CRC8_Calc: Input Parameters Register / Address Type Name Description

R7 unsigned char Preload Preload Value for the CRC Calculation.

According to CCITT a value FF recommended.

R5 unsigned char

idata*

R3 unsigned char BlockLength Length in Bytes of Block that is used for

BlockStart Pointer to first Byte of the Data that is to be used

for calculating checksum

calculation of the checksum, starting with *BlockStart.

2.24.5 Outputs

Table 106 CRC8_Calc: Output values Register/ Address Type Name Description

R7 unsigned char CRC_Result Calculated CRC8 checksum

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2.24.6 Resource Usage

Table 107 CRC8_Calc: Resources Type Used or Modified

Registers R0, R1, R2, R3, R4, R5, R7 SFR ACC, PSW Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.24.7 Execution Information

Table 108 CRC8_Calc: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption

t – 8 + x*9 9 + x*10 µs DIVIC = 00 Q – 0,012 +

x*0,013

0,021 + x*0,023

µC DIVIC = 00H, x is the number of bytes

, x is the number of bytes

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2.25 CRC_Baicheva_Calc()

2.25.1 Description

This function calculates a 8-bit CRC checksum for a memory area in RAM using a fixed polynomial

8+x5+x3+x2

(x Automotive Industry (VDA) and is optimal for data word length of 119 bits and below. The CRC Baicheva calculation starts with a defined preload value. The VDA protocol requires that a preload value of AA

+x+1). It supports the standardized TPMS data protocol from the German Association of the

be used.

2.25.2 Actions

• Calculate CRC Baicheva

2.25.3 Prototype

unsigned char CRC_Baicheva_Calc(unsigned char Preload, unsigned char idata * BlockStart, unsigned char BlockLength)

2.25.4 Inputs

Table 109 CRC_Baicheva_Calc: Input Parameters Register / Address Type Name Description

R7 unsigned char Preload Preload Value for the CRC Calculation.

According to VDA protocol value AA

R5 unsigned char

idata*

R3 unsigned char BlockLength Length in Bytes of Block that is used for

BlockStart Pointer to first Byte of the Data that is to be used

for calculating checksum.

calculation of the checksum, starting with *BlockStart.

is used.

2.25.5 Outputs

Table 110 CRC_Baicheva_Calc: Output values Register/ Address Type Name Description

R7 unsigned char CRC_Result Calculated CRC Baicheva checksum

2.25.6 Resource Usage

Table 111 CRC8_Baicheva_Calc: Resources Type Used or Modified

Registers R0, R3, R5, R6, R7

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Table 111 CRC8_Baicheva_Calc: Resources (cont’d) Type Used or Modified

SFR ACC, PSW Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

ROM Library Functions

2.25.7 Execution Information

Table 112 CRC_Baicheva_Calc: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time

Charge Consumption

t –11 +

x*85

Q – 0,016 +

x*0,128

12 + x*92

0,028 + x*0,221

µs DIVIC = 00H, x is the number of bytes

µC DIVIC = 00H, x is the number of bytes

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2.26 Read_ID()

2.26.1 Description

This function returns the unique serial number of the device and a product description code.

2.26.2 Actions

• Read 4-byte ID

• Read 1 byte product code

2.26.3 Prototype

void Read_ID (struct ID_Struct idata * idata ID_Result)

Note: Structure ID_Struct is defined in SP37_ROMLibrary.h

2.26.4 Inputs

Table 113 Read_ID: Input Parameters Register / Address Type Name Description

R7 idata* ID_Result Pointer to a structure according to the following

definition: idata struct ID_Struct {unsigned long ID; unsigned char ProdCode;}

2.26.5 Outputs

Table 114 Read_ID: Input Parameters Register / Address Type Name Description

R7 idata* ID_Result Pointer to a structure according to the following

definition: idata struct ID_Struct {unsigned long ID; unsigned char ProdCode;} Product Code pressure range indication: xxxx.x000 xxxx.x100 xxxx.x001 xxxx.x101 Package xxxx.xx10B: reserved xxxx.xx11

1) For definition “Green Package” please refer to [1]

: reserved

: 500/900 kPa, Autorange, Green

: reserved

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// Library function prototypes

#include "SP37_ROMLibrary.h"

// ID structure is defined in SP37_ROMLibrary.h

idata ID_Struct ID_Result;

void main() {

// Read Sensor ID function call

Read_ID(&ID_Result);

}

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2.26.6 Resource Usage

Table 115 Read_ID: Resources Type Used or Modified

Registers R0, R3, R4, R5, R6, R7 SFR ACC, DPH, DPL, PSW Stack 2 Bytes

1) Two additional bytes, not included here, are needed to call the library function

2.26.7 Execution Information

Table 116 Read_ID: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,048 0,082 µC DIVIC = 00

t – 32 35 µs DIVIC = 00

2.26.8 Code Example

Figure 12 Code example for usage of Read_ID()

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2.27 ManuRevNb()

2.27.1 Description

This function returns the Infineon SP37 revision number

2.27.2 Actions

• Read 2-byte Revision Number from ROM and return it

2.27.3 Prototype

signed int ManuRevNb (void)

2.27.4 Inputs

Table 117 ManuRevNb: Input Parameters Register / Address Type Name Description

None --- --- ---

ROM Library Functions

2.27.5 Outputs

Table 118 ManuRevNb: Output values Register/ Address Type Name Description

R6(MSB), R7(LSB)

signed int Manufacturer

Revision Number

37XY

: X = Design Step (A...F) Y = Version (0...9)

2.27.6 Resource Usage

Table 119 ManuRevNb: Resources Type Used or Modified

Registers R6, R7 SFR ACC, PSW, DPTR Stack 0 Bytes

1) Two additional bytes, not included here, are needed to call the library function

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2.27.7 Execution Information

Table 120 ManuRevNb: Execution Time and Charge Consumption Parameter Symbol Values Unit Note / Test Condition

Min. Typ. Max.

Execution Time Charge Consumption Q – 0,013 0,023 µC DIVIC = 00

t –910µsDIVIC = 00

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Infineon SP37 Function Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

List of Figures

List of Tables

1 Introduction

1.1 General Considerations

1.2 Type definitions

1.3 Wakeup Handler

1.4 Restricted RAM and FLASH areas

1.4.1 Restricted RAM areas

1.4.2 Restricted FLASH areas

1.5 8051 Instruction Set Summary

2 ROM Library Functions

2.1 Meas_Sensor()

2.1.1 Description

2.1.2 Actions

2.1.3 Prototype

2.1.4 Inputs

2.1.5 Outputs

2.1.6 Resource Usage

2.1.7 Execution Information

2.2 Meas_Pressure()

2.2.1 Description

2.2.2 Actions

2.2.3 Prototype

2.2.4 Inputs

2.2.5 Outputs

2.2.6 Automatic Pressure Range Operation

2.2.7 Resource Usage

2.2.8 Execution Information

2.2.9 Code Example

2.3 Scale_Pressure()

2.3.1 Description

2.3.2 Actions

2.3.3 Prototype

2.3.4 Inputs

2.3.5 Outputs

2.3.6 Resource Usage

2.3.7 Execution Information

2.3.8 Code Example

2.4 Meas_Acceleration()

2.4.1 Description

2.4.2 Actions

2.4.3 Prototype

2.4.4 Inputs

2.4.5 Outputs

2.4.6 Resource Usage

2.4.7 Execution Information

2.4.8 Code Example

2.5 Meas_Temperature()

2.5.1 Description

2.5.2 Actions

2.5.3 Prototype

2.5.4 Inputs

2.5.5 Outputs

2.5.6 Resource Usage

2.5.7 Execution Information

2.5.8 Code Example

2.6 Raw_Temperature()

2.6.1 Description

2.6.2 Actions

2.6.3 Prototype

2.6.4 Inputs

2.6.5 Outputs

2.6.6 Resource Usage

2.6.7 Execution Information

2.7 Comp_Temperature()

2.7.1 Description

2.7.2 Actions

2.7.3 Prototype

2.7.4 Inputs

2.7.5 Outputs

2.7.6 Resource Usage

2.7.7 Execution Information

2.7.8 Code Example

2.8 Meas_Supply_Voltage()

2.8.1 Description