Telit Communications S p A UC864AWA User Guide

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UC864

-E-

AUTO

UC864-AWS-AUTO

Hardware User Guide

1vv0300795 Rev. 11 – 2010/11/18

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

This document is relating to the following products:

PRODUCT

UC864-E-AUTO

UC864-AWS-AUTO

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

Disclaimer

The information contained in this document is the proprietary information of Telit

Communications S.p.A. and its affiliates (“TELIT”). The contents are confidential and

any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of Telit, is strictly prohibited.

Telit makes every effort to ensure the quality of the information it makes available. Notwithstanding the foregoing, Telit does not make any warranty as to the information contained herein, and does not accept any liability for any injury, loss or damage of any kind incurred by use of or reliance upon the information.

Telit disclaims any and all responsibility for the application of the devices characterized in this document, and notes that the application of the device must comply with the safety standards of the applicable country, and where applicable, with the relevant wiring rules.

Telit reserves the right to make modifications, additions and deletions to this document due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and without notice. Such changes will, nevertheless be incorporated into new editions of this application note.

Contents

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

1. OVERVIEW ............................................................................................................................................................... 6

2. MECHANICAL DIMENSIONS ............................................................................................................................... 7

2.1. UC864-E-AUTO / AWS-AUTO M

3. UC864-E-AUTO / AWS-AUTO MODULE CONNECTIONS............................................................................... 8

3.1.

PIN-OUT ............................................................................................................................................................. 8

4. TEMPERATURE RANGE ..................................................................................................................................... 12

4.1. A

5. HARDWARE COMMANDS .................................................................................................................................. 14

5.1. T

5.2. I

5.3. T

5.4. S

6. POWER SUPPLY .................................................................................................................................................... 22

6.1. P

6.2. G

NTENNA CONNECTOR(S

URNING ON THE

NITIALIZATION AND ACTIVATION STATE

URNING

5.3.1.

5.3.2.

5.3.3.

UMMARY OF TURNING ON AND

OWER SUPPLY REQUIREMENTS ENERAL DESIGN RULES

6.2.1.

6.2.2.

6.2.3.

OFF

Shutdown by Software Command Hardware Shutdown Hardware Unconditional Restart

Electrical Design Guidelines Thermal Design Guidelines Power Supply PCB Layout Guidelines

UC864-E-AUTO /

THE

UC864-E-AUTO /

) ................................................................................................................................... 13

.................................................................................................................................... 24

ECHANICAL DIMENSIONS

AWS-AUTO ............................................................................................. 14

................................................................................................................ 15

AWS-AUTO ........................................................................................... 17

........................................................................................................ 18

.............................................................................................................................. 19

......................................................................................................... 20

OFF

THE MODULE

.......................................................................................................................... 22

................................................................................................................ 24

.................................................................................................................. 30

.............................................................................................. 21

................................................................................................. 32

................................................................................. 7

7. ANTENNA(S) ........................................................................................................................................................... 34

7.1. GSM/WCDMA A

7.2. GSM/WCDMA A

8. LOGIC LEVEL SPECIFICATIONS ..................................................................................................................... 36

8.1. R

9. USB PORT................................................................................................................................................................ 38

9.1. USB

10.

10.1. M

10.2. RS232 L

10.3. 5V UART L

11.

11.1. S

11.2. E

ESET SIGNAL

TRANSCEIVER SPECIFICATIONS

SERIAL PORTS .................................................................................................................................................. 40

ODEM SERIAL PORT

EVEL TRANSLATION

AUDIO SECTION OVERVIEW ....................................................................................................................... 48

ELECTION MODE LECTRICAL CHARACTERISTICS

11.2.1. Input Lines (MIC1 and MIC2) Characteristics

11.3. OUTPUT LINES (

NTENNA REQUIREMENTS NTENNA - INSTALLATION GUIDELINES

.................................................................................................................................................... 37

.......................................................................................................................................... 40

............................................................................................................................... 43

EVEL TRANSITION

................................................................................................................................................ 48

PEAKER

.............................................................................................................................. 46

........................................................................................................................... 50

)

.............................................................................................................................. 51

.......................................................................................................... 34

....................................................................................... 35

.................................................................................................................... 39

..................................................................................... 50

11.3.1. Output Lines Characteristics

12.

GENERAL PURPOSE I/O ................................................................................................................................. 52

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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................................................................................................................ 51

12.1. L

12.2. U

12.3. U

12.4. U

12.5. U

12.6. U

12.7. U

12.8. M

OGIC LEVEL SPECIFICATIONS

SING A

GPIO P

SING A

GPIO P

SING THE RF TRANSMISSION CONTROL SING THE SING THE ALARM OUTPUT SING THE BUZZER OUTPUT

AGNETIC BUZZER CONCEPTS

AD AS INPUT AD AS OUTPUT

RFTXMON O

12.8.1. Short Description

12.8.2. Frequency Behavior

12.8.3. Power Supply Influence

12.8.4. Working Current Influence

12.9. U

SING THE TEMPERATURE MONITOR FUNCTION

12.9.1. Short Description

12.9.2. Allowed GPIO

12.10. I

12.11. RTC B

12.12. VAUX1 P

13.

13.1. DAC C

NDICATION OF NETWORK SERVICE AVAILABILITY

DAC AND ADC SECTION ................................................................................................................................ 64

ONVERTER

13.1.1. Description

13.1.2. Enabling DAC

YPASS OUT

OWER OUTPUT

.......................................................................................................................................... 60

........................................................................................................................................... 63

................................................................................................................................................ 64

.............................................................................................................................................. 64

.......................................................................................................................................... 64

13.1.3. Low Pass Filter Example

13.2. ADC C

13.2.1. Description

ONVERTER

................................................................................................................................................ 65

.............................................................................................................................................. 65

13.2.2. Using ADC Converter

............................................................................................................................. 54

.............................................................................................................................. 55

........................................................................................................................... 55

GPIO4 .................................................................................................. 56

UTPUT

GPIO5 .............................................................................................................. 56

GPIO6 ..................................................................................................................... 56

GPIO7 .................................................................................................................... 57

............................................................................................................................ 58

................................................................................................................................... 58

............................................................................................................................... 59

........................................................................................................................ 59

................................................................................................................... 59

................................................................................................... 60

................................................................................................................................... 60

............................................................................................. 62

................................................................................................................................. 63

...................................................................................................................... 65

............................................................................................................................. 65

14.

MOUNTING THE MODULE ON YOUR BOARD ......................................................................................... 66

14.1. A

14.2. C

14.3. T

14.4. M

15.

APPLICATION GUIDE ..................................................................................................................................... 71

15.1. D

15.2. B

15.3. SIM

15.4. EMC

16.

PACKING SYSTEM ........................................................................................................................................... 74

17.

CONFORMITY ASSESSMENT ISSUES ......................................................................................................... 75

18.

SAFETY RECOMMENDATIONS .................................................................................................................... 77

19.

DOCUMENT CHANGE LOG ........................................................................................................................... 78

PPLICATION LEARANCE AREA

HERMAL DISSIPATION

ODULE SOLDERING

EBUG OF THE YPASS CAPACITOR ON POWER SUPPLIES

INTERFACE

RECOMMENDATIONS

PCB L

AYOUT

................................................................................................................................. 67

............................................................................................................................................... 69

........................................................................................................................................ 69

........................................................................................................................................... 70

UC864-E-AUTO / AWS-AUTO

.................................................................................................................................................. 72

................................................................................................................................... 73

IN PRODUCTION

............................................................................................................ 72

......................................................................... 71

upoštevati projektna navodila, opisana v tem

E-

AUTO

/ AWS

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

1. Overview

Overview

OverviewOverview

The aim of this document is the description of some hardware solutions useful for developing a product with the Telit UC864-E-AUTO and UC864-AWS-AUTO modules. In this document all the basic functions of a mobile phone will be taken into account; for each one of them a proper hardware solution will be suggested and eventually the wrong solutions and common errors to be avoided will be evidenced. Obviously this document cannot embrace the whole hardware solutions and products that may be designed. The wrong solutions to be avoided must be considered as mandatory, while the suggested hardware configurations must not be considered mandatory, instead the information given must be used as a guide and a starting point for properly developing your product with the Telit UC864-E-AUTO & UC864-AWS-AUTO modules. For further hardware details that may not be explained in this document refer to the

Telit UC864-E–AUTO & UC864-AWS-AUTO Product Description document where all

the hardware information is reported.

NOTICE:

(EN) The integration of the GSM/GPRS/EGPRS/WCDMA/HSDPA UC864-E-AUTO & UC864AWS-AUTO cellular module within user application must be done according to the design rules described in this manual.

(IT) L’integrazione del modulo cellulare GSM/GPRS/EGPRS/WCDMA/HSDPA UC864- EAUTO e UC864-AWS-AUTO all’interno dell’applicazione dell’utente dovrà rispettare le indicazioni progettuali descritte in questo manuale.

(DE) Die Integration des UC864- E-AUTO & UC864-AWS-AUTO GSM/GPRS/EGPRS/WCDMA/HSDPA Mobilfunk-Moduls in ein Gerät muß gemäß der in diesem Dokument beschriebenen Kunstruktionsregeln erfolgen

(SL) Integracija GSM/GPRS/EGPRS/WCDMA/HSDPA UC864- E-AUTO & UC864-AWSAUTO modula v uporabniški aplikaciji bo morala piročniku.

(SP) La utilización del modulo GSM/GPRS/EGPRS/WCDMA/HSDPA UC864- E-AUTO & UC864-AWS-AUTO debe ser conforme a los usos para los cuales ha sido deseñado descritos en este manual del usuario.

(FR) L’intégration du module cellulaire GSM/GPRS/EGPRS/WCDMA/HSDPA UC864- EAUTO & UC864-AWS-AUTO dans l’application de l’utilisateur sera faite selon les règles de conception décrites dans ce manuel.

(HE)

The information presented in this document is believed to be accurate and reliable. However, no responsibility is assumed by Telit Communications S.p.A. for its use, nor any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Telit Communications S.p.A. other than for circuitry embodied in Telit products. This document is subject to change without notice.

UC864-

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

2. Mechanical Dimensions

Mechanical Dimensions

Mechanical DimensionsMechanical Dimensions

2.1. UC864-E-AUTO / AWS-AUTO Mechanical Dimensions

The Telit UC864-E-AUTO / AWS-AUTO module overall dimensions are:

• Length: 36.2 mm

• Width: 30.0 mm

• Thickness: 5.1mm

Internal

InternalInternal

Internal

Type

TypeType

Type

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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3. UC864

UC864----EEEE----AUTO

UC864UC864

AUTO / AWS

AUTOAUTO

/ AWS----AUTO

/ AWS/ AWS

AUTO MMMModule

AUTO AUTO

odule CCCConnections

odule odule

onnections

onnections onnections

3.1. PIN-OUT

UC864-E-AUTO / AWS-AUTO uses an 80 pin Molex p.n. 53949-0878 male connector for the connections with the external applications. This connector matches the 54150-0878 models.

Pin Signal

PinPin

1111 VBATT - Main power supply Power

2222 VBATT - Main power supply Power

3333 VBATT - Main power supply Power

4444 VBATT - Main power supply Power

5555 GND - Ground Power

6666 GND - Ground Power

7777 GND - Ground Power

8888 AXE I Hands-free switching CMOS 2.6V

9999 EAR_HF+ AO Hands-free ear output, phase + Audio

10 EAR_HF- AO Hands-free ear output, phase - Audio

1010

11 EAR_MT+ AO Handset earphone signal output, phase + Audio

1111

12 EAR_MT- AO Handset earphone signal output, phase - Audio

1212

13 MIC_HF+ AI Hands-free microphone input; phase + Audio

1313

14 MIC_HF- AI Hands-free microphone input; phase - Audio

1414

15 MIC_MT+ AI Handset microphone signal input; phase+ Audio

1515

16 MIC_MT- AI Handset microphone signal input; phase- Audio

1616

1111

SIMVCC -

1818

19 SIMRST O

1919

20 SIMIO I/O External SIM signal - Data I/O 1.8 / 3V

2020

21 SIMIN I External SIM signal - Presence (active low) CMOS 2.6V

2121

22 SIMCLK O

2222

23 RX_TRACE I RX Data for debug monitor CMOS 2.6V

2323

24 TX_TRACE O TX Data for debug monitor CMOS 2.6V

2424

Signal I/O

SignalSignal

I/O

I/OI/O

Function

FunctionFunction

Power Supply

Power SupplyPower Supply

Audio

AudioAudio

SIM Card Interface

SIM Card InterfaceSIM Card Interface

External SIM signal – Power supply for the SIM 1.8 / 3V External SIM signal – Reset 1.8 / 3V

External SIM signal – Clock 1.8 / 3V

Trace

TraceTrace

Pull up

Pull upPull up

On this line a maximum of 10nF bypass capacitor is allowed

Internal

InternalInternal

Internal

Type

TypeType

Type

Analog input used to sense whether a

Input command for switching power ON or OFF (toggle

Pulled up on

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

Pin Signal

PinPin

25 C103/TXD I Serial data input (TXD) from DTE Pull-Down CMOS 2.6V

2525

26 C104/RXD O Serial data output to DTE Pull-Up CMOS 2.6V

2626

27 C107/DSR O Output for Data set ready signal (DSR) to DTE Pull-Down CMOS 2.6V

2727

28 C106/CTS O Output for Clear to send signal (CTS) to DTE Pull-Up CMOS 2.6V

2828

29 C108/DTR I Input for Data terminal ready signal (DTR) from DTE Pull-Up CMOS 2.6V

2929

30 C125/RING O Output for Ring indicator signal (RI) to DTE Pull-Up CMOS 2.6V

3030

31 C105/RTS I Input for Request to send signal (RTS) from DTE Pull-Down CMOS 2.6V

3131

32 C109/DCD O Output for Data carrier detect signal (DCD) to DTE Pull-Up CMOS 2.6V

3232

Signal I/O

SignalSignal

I/O

I/OI/O

Function

FunctionFunction

Prog. / Data + Hw Flow Control

Prog. / Data + Hw Flow ControlProg. / Data + Hw Flow Control

Miscellaneous Functions

Miscellaneous FunctionsMiscellaneous Functions

Pull up

Pull upPull up

35 USB_ID AI

3535

36 PCM_CLOCK I/O PCM clock out Pull-Down CMOS 2.6V

3636

DAC and ADC

DAC and ADCDAC and ADC

37 ADC_IN1 AI Analog/Digital converter input A/D

3737

38 ADC_IN2 AI Analog/Digital converter input A/D

3838

39 ADC_IN3 AI Analog/Digital converter input A/D

3939

40 DAC_OUT AO Digital/Analog converter output D/A

4040

45 STAT_LED O Status indicator led CMOS 1.8V

4545

46 GND - Ground Ground

4646

48 USB_VBUS

4848

49 PWRMON O Power ON Monitor 1KΩ CMOS 2.6V

4949

50 VAUX1 - Power output for external accessories

5050

51 CHARGE AI Charger input

5151

52 CHARGE AI Charger input Power

5252

53 ON/OFF I

5353

54 RESET I Reset input 10KΩ

5454

55 VRTC AO Power supply for RTC block Power

5555

56 GPIO_19 I/O GPIO19 Configurable GPIO CMOS 2.6V

5656

57 GPIO_11 I/O GPIO11 Configurable GPIO CMOS 2.6V

5757

58 GPIO_20 I/O GPIO20 Configurable GPIO CMOS 2.6V

5858

59 GPIO_04 I/O GPIO4 Configurable GPIO CMOS 2.6V

5959

60 GPIO_14 I/O GPIO14 Configurable GPIO CMOS 2.6V

6060

61 GPIO_15 I/O GPIO15 Configurable GPIO CMOS 2.6V

6161

peripheral device is connected, and determine the peripheral type, a host or a peripheral

Miscellaneous Functions

Miscellaneous FunctionsMiscellaneous Functions

Power supply for the internal USB transceiver. This pin is

configured as an analog input or an analog output depending

upon the type of peripheral device connected.

command).

Telit GPIOs

Telit GPIOsTelit GPIOs

Analog

47K

Ω

pull-down

10K

Ω

pull-down

4.4V ~5.25V

Power

chip

Internal

InternalInternal

Internal

Type

TypeType

Type

GPIO_17/

3.0V

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

Pin Signal

PinPin

62 GPIO_12 I/O GPIO12 Configurable GPIO CMOS 2.6V

6262

63 GPIO_10/ PCM_TX I/O GPIO10 Configurable GPIO / PCM Data Output Pull-Down CMOS 2.6V

6363

64 GPIO_22 I/O GPIO22 Configurable GPIO CMOS 1.8V

6464

65 GPIO_18/ PCM_RX I/O GPIO18 Configurable GPIO / PCM Data input Pull-Down CMOS 2.6V

6565

66 GPIO_03 I/O GPIO3 Configurable GPIO CMOS 2.6V

6666

67 GPIO_08 I/O GPIO8 Configurable GPIO CMOS 2.6V

6767

68 GPIO_06 / ALARM I/O GPIO6 Configurable GPIO / ALARM CMOS 2.6V

6868

70 GPIO_01 I/O GPIO1 Configurable GPIO CMOS 2.6V

7070

7171

PCM_SYNC

72 GPIO_21 I/O GPIO21 Configurable GPIO CMOS 2.6V

7272

73 GPIO_07/ BUZZER I/O GPIO7 Configurable GPIO / Buzzer CMOS 2.6V

7373

74 GPIO_02 I/O GPIO02 I/O pin CMOS 2.6V

7474

75 GPIO_16 I/O GPIO16 Configurable GPIO CMOS 2.6V

7575

76 GPIO_09 I/O GPIO9 Configurable GPIO CMOS 2.6V

7676

77 GPIO_13 I/O GPIO13 Configurable CMOS 2.6V

7777

78 GPIO_05/ RFTXMON I/O GPIO05 Configurable GPIO / Transmitter ON monitor CMOS 2.6V

7878

Signal I/O

SignalSignal

I/O

I/OI/O

I/O GPIO17 Configurable GPIO / PCM Sync Pull-Down CMOS 2.6V

Function

FunctionFunction

USB Interface

USB InterfaceUSB Interface

Pull up

Pull upPull up

77779999 USB_D+ I/O USB differential Data (+)

80 USB_D- I/O USB differential Data (-)

8080

RESERVED

RESERVEDRESERVED

17 -

1717

3333

3434

41 -

4141

42 -

4242

43 -

4343

44 -

4444

47 -

4747

69 -

6969

~3.6V

NOTE: RESERVED pins must not be connected

RTS must be connected to the GND (on the module side) if flow control is not used

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

Note

Note::::

NoteNote

If not used, almost all pins must be left disconnected. The only exceptions are the following:

PinPin

1111 VBATT Main power supply

2222 VBATT Main power supply

3333 VBATT Main power supply

4444 VBATT Main power supply

5555 GND Ground

6666 GND Ground

7777 GND Ground

46 GND Ground

4646

25 C103/TXD Serial data input (TXD) from DTE

2525

26 C104/RXD Serial data output to DTE

2626

31 C105/RTS Input for Request to send signal (RTS) from DTE

3131

53 ON/OFF

5353

54 RESET Reset input

5454

Signal

Signal Function

SignalSignal

Input command for switching power ON or OFF (toggle command).

Function

FunctionFunction

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

4. TEMPERATURE RANGE

TEMPERATURE RANGE

TEMPERATURE RANGETEMPERATURE RANGE

The UC864-E-AUTO / AWS-AUTO Temperature ranges are:

Reference Ambient Temperature

Reference Ambient TemperatureReference Ambient Temperature Normal Operating -10°C to +55°C Extended Operating -20°C to +70°C Extreme Range -30°C to +85°C Storage -40°C to +85°C

4.1. Antenna Connector(s)

The UC864-E-AUTO / AWS-AUTO module is designed with a 50 Ohm RF PAD that permits to interface it with an application equipped by a Rosenberger coaxial Board to board connector. The counterpart suitable is a Rosenberger 99CI106-030L5.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

Suggested footprint on the application side:

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

5. Hardware Commands

Hardware Commands

Hardware CommandsHardware Commands

5.1. Turning ON the UC864-E-AUTO / AWS-AUTO

To turn on UC864-E-AUTO / AWS-AUTO, the pad ON# must be tied low for at least 1 second and then released.

The maximum current that can be drained from the ON# pad is 0,1 mA.

A simple

to do it is:

Power ON impulse

GND

ON#

circuit

UC864-E-AUTO / AWS-AUTO Hardware User Guide

5.2. Initialization and Activation state

Upon turning on UC864-E-AUTO / AWS-AUTO, the module is not activated yet because the boot sequence of UC864-E-AUTO / AWS-AUTO is still going on internally. It takes about 10 seconds to complete the initializing the module internally.

For this reason, it would be useless to try to access UC864-E-AUTO/ AWS-AUTO during a AWS-AUTO needs at least 10 seconds after the PWRMON goes High.

Initialization state

as below. To get the desirable stability, UC864-E-AUTO /

1vv0300795 Rev.11 – 2010/11/18

During the waiting for the

Initialization state

Activation state

, any kind of AT-command is not available. DTE must be

to communicate with UC864-E-AUTO / AWS-AUTO.

In this document all the lines are inverted. Active low signals are labeled with a name

turns fully on also by supplying power to the Charge pad

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

NOTE:

NOTE: NOTE:

To check if the UC864-E-AUTO / AWS-AUTO has powered on, the hardware line PWRMON must be monitored. When PWRMON goes high, the module has powered on.

NOTE:

NOTE: NOTE:

Do not use any pull up resistor on the ON/OFF# line, it is internally pulled up. Using pull up resistor may bring to latch up problems on the UC864-E-AUTO / AWS-AUTO power regulator and improper power on/off of the module. The line ON/OFF# must be connected only in open collector configuration.

NOTE:

NOTE: NOTE:

that ends with a "#" or with a bar over the name.

NOTE:

NOTE: NOTE:

UC864-E-AUTO / AWS-AUTO (provided there is a battery on the VBATT pads).

For example:

1- Let us assume you need to drive the ON/OFF# pad with a totem pole output of a

+1.8/5 V microcontroller (uP_OUT1):

10k

1.8 / 5V

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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5.3. Turning OFF the UC864-E-AUTO / AWS-AUTO

Turning off the device can be done in three ways:

• by software command (see UC864-E-AUTO / AWS-AUTO Software User

Guide)

• by hardware shutdown

• by Hardware Unconditional Restart

When the device is shut down by software command or by hardware shutdown, it issues to the network a detach request that informs the network that the device will not be reachable any more.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

5.3.1. Shutdown by Software Command

UC864-E-AUTO / AWS-AUTO can be shut down by a software command.

When a shut down command is sent, UC864-E-AUTO / AWS-AUTO goes into the finalization state and finally will shut down PWRMON at the end of this state.

The period of the finalization state can differ according to the situation in which the UC864-E-AUTO / AWS-AUTO is so it cannot be fixed definitely.

Normally it will be above 10 seconds later from sending a shut down command and DTE should monitor the status of PWRMON to see the actual power off.

1vv0300795 Rev.11 – 2010/11/18

TIP:

TIP: TIP:

To check if the device has powered off, hardware line PWRMON must be monitored. When PWRMON goes low, the device has powered off.

5.3.2. Hardware Shutdown

To turn OFF UC864-E-AUTO / AWS-AUTO the pad ON/OFF# must be tied low for at least 2 seconds and then released. Same circuitry and timing for the power on must be used.

When the hold time of ON/OFF# is above 2 seconds, UC864-E-AUTO / AWS-AUTO goes into the finalization state and finally will shut down PWRMON at the end of this state.

The period of the finalization state can differ according to the situation in which the UC864-E-AUTO / AWS-AUTO is so it cannot be fixed definitely.

Normally it will be above 10 seconds later from releasing ON/OFF# and DTE should monitor the status of PWRMON to see the actual power off.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

TIP:

TIP: TIP:

To check if the device has powered off, hardware line PWRMON must be monitored. When PWRMON goes low, the device has powered off.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

5.3.3. Hardware Unconditional Restart

To unconditionally restart UC864-E-AUTO / AWS-AUTO, the pad RESET# must be tied low for at least 200 milliseconds and then released.

A simple circuit to do it is:

Unconditional Restart impulse

1vv0300795 Rev.11 – 2010/11/18

RESET#

GND

NOTE:

NOTE: NOTE:

Do not use any pull up resistor on the RESET# line or any totem pole digital output. Using pull up resistor may bring to latch up problems on the UC864-E-AUTO / AWSAUTO power regulator and improper functioning of the module. The line RESET# must be connected only in open collector configuration.

TIP:

TIP: TIP:

The unconditional hardware Restart must always be implemented on the boards and the software must use it as an emergency exit procedure.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

For example:

1- Let us assume you need to drive the RESET# pad with a totem pole output of a

+1.8/5 V microcontroller (uP_OUT2):

10k

+1.8 / 5V

5.4. Summary of Turning ON and OFF the module

Below chart describes the overall sequences for Turning ON and OFF.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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6. Power Supply

Power Supply

Power SupplyPower Supply

The power supply circuitry and board layout are a very important part in the full product design and they strongly reflect on the product overall performances. Read carefully the requirements and the guidelines that will follow for a proper design.

6.1. Power Supply Requirements

The UC864-E-AUTO / AWS-AUTO power requirements are:

Power Supply

Power SupplyPower Supply Nominal Supply Voltage 3.8V Max Supply Voltage 4.2V

Supply Voltage Range 3.4V – 4.2V

UC864

UC864----EEEE----AUTO

UC864UC864

Mode

Mode Average(mA)

ModeMode

IDLE mode Stand by mode; no call in progress

AT+CFUN=1

AT+CFUN=4

AT+CFUN=0 or

AT+CFUN=5

WCDMA TX and RX mode

WCDMA Voice 690 WCDMA voice channel

WCDMA data 680 WCDMA data channel

HSDPA 730 HSDPA data channel

GSM TX and RX mode

GSM Voice 320 GSM voice channel GPRS Class12 650 GPRS data channel EDGE Class12 430 EDGE data channel

WCDMA 22.0

GSM 15.0

WCDMA 17.8

GSM 17.8

WCDMA 4.1 / 1.3*

GSM 3.3 / 1.3*

Average(mA) Mode D

Average(mA)Average(mA)

* Worst/best case depends on network configuration and is not under module control.

AUTO/ AWS

/ AWS----AUTO

AUTOAUTO

/ AWS/ AWS

Normal mode; full functionality of the module

Disabled TX and RX; modules is not registered on the network

Power saving; CFUN=0 module registered on the network and can receive voice call or an SMS; but it is not possible to send AT commands; module wakes up with an unsolicited code (call or SMS) or rising RTS line. CFN=5 full functionality with power saving; Module registered on the network can receive incoming call sand SMS

AUTO

AUTOAUTO

Mode Description

Mode DMode D

escription

escriptionescription

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In GSM/GPRS mode, RF transmission is not continuous and it is packed into bursts at a base frequency of about 216 Hz, and the relative current peaks can be as high as about 2A. Therefore the power supply has to be designed in order to withstand these current peaks without big voltage drops; this means that both the electrical design and the board layout must be designed for this current flow. If the layout of the PCB is not well designed, a strong noise floor is generated on the ground; this will reflect on all the audio paths producing an audible annoying noise at 216 Hz; if the voltage drops during the peak, current absorption is too much. The device may even shut

TIP:

TIP: TIP:

The electrical design for the Power supply must be made ensuring that it will be capable of a peak current output of at least 2A.

down as a consequence of the supply voltage drop.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

6.2. General Design Rules

The principal guidelines for the Power Supply Design embrace three different design steps:

• the electrical design

• the thermal design

• the PCB layout

6.2.1. Electrical Design Guidelines

The electrical design of the power supply depends strongly on the power source where this power is drained. We will distinguish them into three categories:

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• +5V input (typically PC internal regulator output)

• +12V input (typically automotive)

• battery

6.2.1.1. + 5V Input Source Power Supply Design Guidelines

• The desired output for the power supply is 3.8V, hence there is not a big

difference between the input source and the desired output and a linear regulator can be used. A switching power supply will not be suited because of the low drop-out requirements.

• When using a linear regulator, a proper heat sink must be provided in

order to dissipate the power generated.

• A Bypass low ESR capacitor of adequate capacity must be provided in

order to cut the current absorption peaks close to UC864-E-AUTO / AWSAUTO, a 100µF tantalum capacitor is usually suited.

• Make sure the low ESR capacitor on the power supply output (usually a

tantalum one) is rated at least 10V.

• A protection diode must be inserted close to the power input, in order to

save UC864-E-AUTO / AWS-AUTO from power polarity inversion.

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An example of linear regulator with 5V input is:

6.2.1.2. + 12V Input Source Power Supply Design Guidelines

• The desired output for the power supply is 3.8V, hence due to the big

difference between the input source and the desired output, a linear regulator is not suited and must not be used. A switching power supply will be preferable because of its better efficiency especially with the 2A peak current load represented by UC864-E-AUTO / AWS-AUTO.

• When using a switching regulator, a 500kHz or more switching frequency

regulator is preferable because of its smaller inductor size and its faster transient response. This allows the regulator to respond quickly to the current peaks absorption.

• In any case, the frequency and Switching design selection is related to the

application to be developed due to the fact the switching frequency could also generate EMC interferences.

• For car PB battery the input voltage can rise up to 15.8V and this must be

kept in mind when choosing components: all components in the power supply must withstand this voltage.

• A Bypass low ESR capacitor of adequate capacity must be provided in

order to cut the current absorption peaks. A 100µF tantalum capacitor is usually suited for this.

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• Make sure the low ESR capacitor on the power supply output (usually a

tantalum one) is rated at least 10V.

• For Car applications a spike protection diode must be inserted close to

the power input, in order to clean the supply from spikes.

• A protection diode must be inserted close to the power input, in order to

save UC864-E-AUTO / AWS-AUTO from power polarity inversion. This can be the same diode as for spike protection.

An example of switching regulator with 12V input is in the below schematic (it is split in 2 parts):

UC864-E-AUTO / AWS-AUTO Hardware User Guide

6.2.1.3. Battery Source Power Supply Design Guidelines

• The desired nominal output for the power supply is 3.8V and the

maximum allowed voltage is 4.2V, hence a single 3.7V Li-Ion cell battery type is suited for supplying the power to the Telit UC864-E-AUTO / AWSAUTO module. The three cells Ni/Cd or Ni/MH 3.6 V Nom. battery types or 4V PB types must not be used directly since their maximum voltage can rise over the absolute maximum voltage for UC864-E-AUTO / AWS-AUTO and damage it.

NOTE:

NOTE: NOTE:

Do not use any Ni-Cd, Ni-MH, and Pb battery types directly connected with UC864-EAUTO / AWS-AUTO. Their use can lead to overvoltage on UC864-E-AUTO / AWS-AUTO and damage it. Use only Li-Ion battery types.

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• A Bypass low ESR capacitor of adequate capacity must be provided in

order to cut the current absorption peaks, a 100µF tantalum capacitor is usually suited.

• Make sure the low ESR capacitor (usually a tantalum one) is rated at least

10V.

• A protection diode must be inserted close to the power input, in order to

save UC864-E-AUTO / AWS-AUTO from power polarity inversion. Otherwise the battery connector must be done in a way to avoid polarity inversions when connecting the battery.

• The battery capacity must be at least 500mAh in order to withstand the

current peaks of 2A; the suggested capacity is from 500mAh to 1000mAh.

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6.2.1.4. Battery Charge Control Circuitry Design Guidelines

The charging process for Li-Ion Batteries can be divided into 4 phases:

• qualification and trickle charging

• fast charge 1 - constant current

• final charge - constant voltage or pulsed charging

• maintenance charge

The qualification process consists of a battery voltage measure, indicating roughly its charge status. If the battery is deeply discharged, meaning its voltage is lower than the trickle charging threshold, then charging must start slowly, possibly with a current limited to the pre-charging process. The current must be kept very low with respect to the fast charge value.

During trickle charging the voltage across the battery terminals rises; when it reaches the fast charge threshold level the charging process goes into a fast charge phase.

During the fast charge phase the process proceeds with a current limited for charging; this current limit depends on the required time for completing the charge and on battery pack capacity. During this phase the voltage across the battery terminals still raises but at a lower rate. Once the battery voltage reaches its maximum voltage the process goes into its third state: Final charging. The voltage measure to change the process status into final charge is very important. It must be ensured that the maximum battery voltage is never exceeded, otherwise the battery may be damaged and even explode.

Moreover, for constant final chargers, the voltage phase (final charge) must not start before the battery voltage has reached its maximum value, otherwise the battery capacity will be slightly reduced. The final charge can be of two different types: constant voltage or pulsed. UC864-E-AUTO / AWS-AUTO uses constant voltage.

The constant voltage charge proceeds with a fixed voltage regulator (very accurately set to the maximum battery voltage) and the current will decrease while the battery is becoming charged. When the charging current falls below a certain fraction of the fast charge current value, the battery is considered fully charged, the final charge stops and eventually starts the maintenance.

The pulsed charge process has no voltage regulation, instead charge continues with pulses. Usually the pulse charge works in the following manner: the charge is stopped for some time, let us say few hundreds of ms, then the battery voltage will be measured and when it drops below its maximum value, a fixed time length charging pulse is issued. As the battery approaches its full charge, the off time will become longer and the duty-cycle of the pulses will decrease. The battery is considered fully charged when the pulse duty-cycle is less than a threshold value,

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typically 10%. When this happens, the pulse charge stops and eventually the maintenance starts.

The last phase is not properly a charging phase, since the battery at this point is fully charged and the process may stop after the final charge. The maintenance charge provides an additional charging process to compensate the charge leak typical of a Li-Ion battery. It is done by issuing pulses with a fixed time length, again few hundreds of ms, and a duty-cycle around 5% or less.

This last phase is not implemented in the UC864-E-AUTO / AWS-AUTO internal charging algorithm so once-charged battery is left discharging down to a certain threshold. It is cycled from full charge to slight discharge even if the battery charger is inserted. This guarantees that the remaining charge in the battery is a good percentage and that the battery is not damaged by keeping it always fully charged (Li-Ion rechargeable batteries usually deteriorate when kept fully charged).

Last but not least, in some applications, it is highly desired that the charging process restarts when the battery is discharged and its voltage drops below a certain threshold. This is typical for the UC864-E-AUTO / AWS-AUTO internal charger.

As you can see, the charging process is not a trivial task to do; moreover all these operations must start only if battery temperature is inside charging range, usually

5°C - 45°C.

The UC864-E-AUTO / AWS-AUTO measures the temperature of its internal component in order to satisfy this last requirement. This not exactly the same as the battery temperature but in common use, the two temperatures must not differ too much and the charging temperature range must be guaranteed.

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NOTE:

NOTE: NOTE:

For all the threshold voltages, inside UC864-E-AUTO / AWS-AUTO, all thresholds are fixed in order to maximize Li-Ion battery performances and do not need to be changed.

NOTE:

NOTE: NOTE:

In this application the battery charger input current must be limited to less than 400mA. This can be done by using a current limited wall adapter as the power source.

NOTE:

NOTE: NOTE:

When starting the charger from Module powered off, the startup will be in CFUN4; to activate the normal mode a command AT+CFUN=1 has to be provided.

There is also the possibility to activate the normal mode using the ON_OFF* signal.

In this case, when HW powering off the module with the same line (ON_OFF*) and having the charger still connected, the module will go back to CFUN4.

NOTE:

NOTE:NOTE:

It is important to have a 100ųF Capacitor to VBAT in order to avoid instability of the charger circuit if the battery is accidentally disconnected during the charging activity.

6.2.2. Thermal Design Guidelines

The thermal design for the power supply heat sink must be done with the following specifications:

• Average current consumption during HSDPA transmission @PWR level

max in UC864-E-AUTO / AWS-AUTO : 730mA

• Average current consumption during class12 GPRS transmission @PWR

level max: 650mA

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NOTE:

NOTE: NOTE:

The average consumption during transmissions depends on the power level at which the device is requested to transmit via the network. The average current consumption hence varies significantly.

NOTE:

NOTE: NOTE:

The thermal design for the Power supply must be made keeping an average consumption at the max transmitting level during calls of 730mA rms.

Considering the very low current during idle, especially if Power Saving function is enabled, it is possible to consider from the thermal point of view that the device absorbs current significantly only during calls.

If we assume that the device stays in transmission for short periods of time (let us say few minutes) and then remains for quite a long time in idle (let us say one hour), then the power supply has always the time to cool down between the calls and the heat sink could be smaller than the calculated for 730mA maximum RMS current. There could even be a simple chip package (no heat sink).

Moreover in average network conditions the device is requested to transmit at a lower power level than the maximum and hence the current consumption will be less than 730mA (being usually around 250mA).

For these reasons the thermal design is rarely a concern and the simple ground plane where the power supply chip is placed can be enough to ensure a good thermal condition and avoid overheating.

For the heat generated by the UC864-E-AUTO / AWS-AUTO, you can consider it to be during transmission 2W max. This generated heat will be mostly conducted to the ground plane under the UC864-E-AUTO / AWS-AUTO; you must ensure that your application can dissipate heat

In the WCDMA/HSDPA mode, since UC864-E-AUTO / AWS-AUTO emits RF signals continuously during transmission, you must pay special attention how to dissipate the heat generated.

The current consumption will be up to about 730mA in HSDPA (680mA in WCDMA) continuously at the maximum TX output power (24dBm). Thus, you must arrange the PCB area as large as possible under UC864-E-AUTO / AWS-AUTO which you will mount. You must mount UC864-E-AUTO / AWS-AUTO on the large ground area of your application board and make many ground vias to dissipate the heat.

The peak current consumption in the GSM mode is higher than that in WCDMA. However, considering the heat sink is more important in case of WCDMA.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

As mentioned before, a GSM signal is bursty, thus, the temperature drift is more insensible than WCDMA. Consequently, if you prescribe the heat dissipation in the

WCDMA mode, you don’t need to think more about the GSM mode.

6.2.3. Power Supply PCB Layout Guidelines

As seen in the electrical design guidelines, the power supply must have a low ESR capacitor on the output to cut the current peaks and a protection diode on the input to protect the supply from spikes and polarity inversion. The placement of these components is crucial for the correct working of the circuitry. A misplaced component can be useless or can even decrease the power supply performances.

• The Bypass low ESR capacitor must be placed close to the Telit UC864-E-

AUTO / AWS-AUTO power input pads, or in the case the power supply is a switching type, it can be placed close to the inductor to cut the ripple if the PCB trace from the capacitor to UC864-E-AUTO / AWS-AUTO is wide enough to ensure a drop-less connection even during the 2A current peaks.

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• The protection diode must be placed close to the input connector where

the power source is drained.

• The PCB traces from the input connector to the power regulator. IC must

be wide enough to ensure no voltage drops to occur when the 2A current peaks are absorbed. Note that this is not made in order to save power loss but especially to avoid the voltage drops on the power line at the current peaks frequency of 216 Hz that will reflect on all the components connected to that supply (also introducing the noise floor at the burst base frequency.) For this reason while a voltage drop of 300-400 mV may be acceptable from the power loss point of view, the same voltage drop may not be acceptable from the noise point of view. If your application does not have audio interface but only uses the data feature of the Telit UC864-E-AUTO, then this noise is not so disturbing and power supply layout design can be more forgiving.

• The PCB traces to UC864-E-AUTO / AWS-AUTO and the Bypass capacitor

must be wide enough to ensure no significant voltage drops to occur when the 2A current peaks are absorbed. This is a must for the same abovementioned reasons. Try to keep this trace as short as possible.

• The PCB traces connecting the Switching output to the inductor and the

switching diode must be kept as short as possible by placing the inductor and the diode very close to the power switching IC (only for switching power supply). This is done in order to reduce the radiated field (noise) at the switching frequency (usually 100-500 kHz).

• The use of a good common ground plane is suggested.

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• The placement of the power supply on the board must be done in a way to

guarantee that the high current return paths in the ground plane are not overlapped to any noise sensitive circuitry as the microphone amplifier/buffer or earphone amplifier.

• The power supply input cables must be kept separately from noise

sensitive lines such as microphone/earphone cables.

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7. Antenna

Antenna(s)

AntennaAntenna

The antenna connection and board layout design are the most important parts in the

full product design and they strongly reflect on the product’s overall performances.

Read carefully and follow the requirements and the guidelines for a proper design.

(s)

(s)(s)

7.1. GSM/WCDMA Antenna Requirements

As suggested on the Product Description, the antenna for a Telit UC864-E-AUTO / AWS-AUTO device must fulfill the following requirements:

GSM /WCDMA ANTENNA REQUIREMENTS

Frequency range

Frequency range Depending by frequency band(s) provided by the network

Frequency rangeFrequency range

Bandwidth

BandwidthBandwidth

Gain

Gain Gain <

GainGain

Impedance

Impedance 50 Ohm

ImpedanceImpedance Input power

Input power > 33dBm(2 W) peak power in GSM

Input powerInput power

VSWR absolute max

VSWR absolute max <= 10:1

VSWR absolute maxVSWR absolute max VSWR recommended

VSWR recommended <= 2:1

VSWR recommendedVSWR recommended

GSM /WCDMA ANTENNA REQUIREMENTSGSM /WCDMA ANTENNA REQUIREMENTS

operator, the customer shall use the most suitable antenna for that/those band(s)

UC864

UC864----EEEE----AUTO

UC864UC864 80 MHz in GSM900, 170 MHz in DCS 250 MHz in WCDMA2100 band

UC864

UC864----AWS

UC864UC864 70 MHz in GSM850, 140 MHz in PCS 455 MHz in WCDMA1700(AWS) band WCDMA AWS band : TX = 45MHz, RX = 45MHz TX-RX freq. separation = 400MHz

7.18 dBi (GSM 850), 2.78 dBi (PCS 1900) and 1.43 dBi (FDD

IV)

> 24dBm Average power in WCDMA

AUTO

AUTOAUTO

AWS----AUTO

AUTO

AWSAWS

AUTOAUTO

Furthermore if the device is developed for the US market, it must comply to the FCC approval requirements:

This device is to be used only for mobile and fixed application. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-Users must be provided with transmitter operation conditions for satisfying RF exposure compliance. OEM integrators must ensure that the end user has no manual instructions to remove or install the UC864AWS-AUTO module (GSM 850), 2.78 dBi (PCS 1900) and 1.43 dBi (FDD IV)

Antennas used for this OEM module must not exceed 7.18 dBi

gain for mobile and fixed

operating configurations.

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7.2. GSM/WCDMA Antenna - Installation Guidelines

• Install the antenna in a place covered by the GSM/WCDMA signal.

• The Antenna must be installed to provide a separation distance of at least

20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter;

• Antenna must not be installed inside metal cases;

• Antenna must be installed also according Antenna manufacturer

instructions.

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8. Logic L

Logic Level

Logic LLogic L

Where not specifically stated, all the interface circuits work at 2.6V CMOS logic levels. The following table shows the logic level specifications used in the Telit UC864-E-AUTO / AWS-AUTO interface circuits:

NOTE:

NOTE: NOTE:

Do not connect UC864-E-AUTO / AWS-AUTO’s digital logic signal directly to OEM’s

digital logic signal of with level higher than 3.0V.

For 2.6V CMOS signals:

Input level on any digital pin when on Input voltage on analog pins when on

Input high level 2.0V 2.9 V Input low level -0.3V 0.6V Output high level 2.15V 2.6V Output low level 0V 0.45V

evel SSSSpecifications

evel evel

Absolute Maximum Ratings

Absolute Maximum Ratings ----Not Functional

Absolute Maximum Ratings Absolute Maximum Ratings

Parameter

ParameterParameter

Level

LevelLevel

pecifications

pecificationspecifications

Not Functional

Not FunctionalNot Functional

UC864

UC864----EEEE----AUTO

UC864UC864

-0.3V +3.0V

-0.3V +3.0 V

Ope

Operating Range

rating Range ---- Interface levels

OpeOpe

rating Range rating Range

UC864

UC864----EEEE----AUTO

UC864UC864

AUTO / AWS

AUTOAUTO

Min

Min Max

MinMin

Interface levels

Interface levelsInterface levels

AUTO / AWS

AUTOAUTO

Min

Min Max

MinMin

/ AWS----AUTO

/ AWS/ AWS

/ AWS----AUTO

/ AWS/ AWS

AUTO

AUTOAUTO

Max

MaxMax

AUTO

AUTOAUTO

Max

MaxMax

For 1,8V signals:

Operating Range

Operating Range ---- Interface levels (1.8V CMOS)

Operating Range Operating Range

Lev

Level

LevLev

elel

Input high level 1.5V 2.1V Input low level -0.3V 0.5V Output high level 1.35V 1.8V Output low level 0V 0.45V

Interface levels (1.8V CMOS)

Interface levels (1.8V CMOS)Interface levels (1.8V CMOS)

UC864

UC864----EEEE----AUTO

UC864UC864

AUTO / AWS

AUTOAUTO

Min

Min Max

MinMin

/ AWS----AUTO

/ AWS/ AWS

Max

MaxMax

AUTO

AUTOAUTO

8.1. Reset Signal

Signal

Signal Function

SignalSignal RESET Phone reset

RESET is used to reset the UC864-E-AUTO / AWS-AUTO module. Whenever this signal is pulled low, UC864-E-AUTO / AWS-AUTO is reset. When the device is reset it stops all operations. After the release of the reset UC864-E-AUTO / AWS-AUTO is unconditionally shut down, without doing any detach operations from the network where it is registered. This behavior is not a proper shutdown because the device is requested to issue a detach request on turn off. For this reason, the Reset signal must not be used for normally shutting down the device, but only as an emergency exit in the rare case the device remains stuck waiting for some network response.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

Function I/O

FunctionFunction

I/O PIN Number

I/OI/O

I 54

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PIN Number

PIN NumberPIN Number

The RESET is internally controlled on start-up to achieve always a proper power-on reset sequence. There is no need to control this pin on start-up. It may only be used to reset a device already on, that is, not responding to any command.

NOTE:

NOTE: NOTE:

Do not use this signal to power off UC864-E-AUTO / AWS-AUTO. Use the ON/OFF signal to perform this function or the AT#SHDN command.

Reset Signal Operating levels:

Signal

Signal Min

SignalSignal

RESET Input high 2.0V* 2.6V

RESET Input low 0V 0.2V

* This signal is internally pulled up so the pin can be left floating if not used.

If unused, this signal may be left unconnected. If used, it must always be connected with an open collector transistor to permit the internal circuitry the power on reset and under voltage lockout functions.

Min Max

MinMin

Max

MaxMax

does NOT support host device operation at the moment,

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9. USB Port

USB Port

USB PortUSB Port

UC864-E-AUTO / AWS-AUTO includes an integrated universal serial bus (USB) transceiver, compatible with USB 2.0 specifications and supporting the USB FullSpeed (12 Mb/s) mode. In HSDPA (High Speed downlink Packet Access) mode, the downlink data speed rates up to 7.2Mbps. Hence OEMs need to interface UC864-EAUTO / AWS-AUTO to applications in full-speed (12Mbits/s) mode.

This is the main communication port suggested for the OEM application.

UC864

UC864----EEEE----AUTO

UC864UC864

Signal

SignalSignal

USB_VBUS 48

USB_D- 80

USB D+ 79

USB_ID

(for future use)

/ AWS

/ AWS----AUTO

/ AWS/ AWS

AUTO

AUTOAUTO

AUTO

AUTOAUTO

Pad No.

Pad No.Pad No.

Usage

UsageUsage

Power supply for the internal USB transceiver. This pin is configured as an analog input or an analog output depending upon the type of peripheral device connected. Minus (-) line of the differential, bi-directional USB signal to/from the peripheral device Plus (+) line of the differential, bi-directional USB signal to/from the peripheral device Analog input used to sense whether a peripheral device is connected and if connected, to determine the peripheral type, host or slave

NOTE:

NOTE:NOTE:

UC864-E-AUTO / AWS-AUTO that is, it works as a slave device. Consequently USB_ID must be opened (not connected).

TRM

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9.1. USB transceiver specifications

This is the on-chip USB transceiver specifications

Parameter

Parameter Comments

ParameterParameter

USB_VBUS

USB_VBUS ::::

USB_VBUSUSB_VBUS

Supply Voltage 4.5 5.0 5.25 V Supply Current 25 mA

Input Lev

Input Levels for Low

Input LevInput Lev

Receiver Threshold (single-end) 0.8 2.0 V Differential Input Sensitivity |D+ - D-|, V Differential Common-mode Range Includes V

Output Levels for Low

Output Levels for Low----/full

Output Levels for LowOutput Levels for Low

Low R High R Output Signal Crossover Voltage 1.3 2.0 V

Terminations :

Terminations :Terminations :

Internal pull-up resistor V Internal pull-down resistor D+ to GND, D- to GND 14.3 15 24.8 kΩ

High-Z state output impedance

Termination Voltage An internal supply voltage, V

Driver

Driver ccccharacteristics

Driver Driver

Transition time : Rise time Fall time Rise/fall time matching 90 111 % Series output resistance D+, D- 28 33 44

Driver characteristics

Driver characteristics –––– LLLLow speed

Driver characteristics Driver characteristics

Transition time : Rise time Fall time Rise/fall time matching 80 125 %

USB_ID (for future use only)

USB_ID (for future use only)USB_ID (for future use only)

ID pin pull-up resistance 108 140 182 kΩ A device detection threshold t B device detection threshold t

els for Low----/full

els for Lowels for Low

haracteristics –––– FFFFull speed

haracteristics haracteristics

/full----speed :

speed :

/full/full

speed :speed :

/full----speed :

speed :

/full/full

speed :speed :

ull speed

ull speedull speed

ow speed

ow speedow speed

= 1.5 kΩ to 3.6 V 0.3 V = 15 kΩ to GND 2.8 3.6 V

to D+, V

0 V < VD < 3.6V; measured at D+ and D- pins to GND

CL = 50 to 125 pF C

= 50 to 125 pF

CL = 50 to 600 pF C

= 50 to 600 pF

< 1 us, V < 1 us, V

Comments Min

CommentsComments

= 0.8V to 2.5V 0.2 V

0.8 2.5 V

to D- 1.425

= 50mV = 50mV

Min Typ

MinMin

300

3.0 3.3 3.6 V

4 4

75 75

Typ Max

TypTyp

1.5 1.575 kΩ

0.15*V

0.8*V

Max Unit

MaxMax

20 20

300 300

kΩ

V V

Unit

UnitUnit

ns ns

Ω

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10. Serial Ports

Serial Ports

Serial PortsSerial Ports

The serial port on the Telit UC864-E-AUTO / AWS-AUTO is another possible interface between the module and OEM hardware.

2 serial ports are available on the module:

• MODEM SERIAL PORT;

• MODEM SERIAL PORT 2 (DEBUG).

10.1. Modem Serial Port

Several configurations can be designed for the serial port on the OEM hardware. The most common are:

• RS232 PC com port;

• microcontroller UART @ 2.6V – 2.9V (Universal Asynchronous Receive

Transmit) ;

• microcontroller UART @ 5V or other voltages different from 2.6V .

Depending on the type of serial port on the OEM hardware, a level translator circuit may be needed to make the system work. The only configuration that does not need a level translation is the 2.6V UART.

The serial port on UC864-E-AUTO / AWS-AUTO is a +2.6V UART with all the 7 RS232 signals. It differs from the PC-RS232 in signal polarity (RS232 is reversed) and levels.

Input for Data terminal ready signal (DTR) from

Input for Request to send signal (RTS) from

Output for Data carrier detect signal (DCD) to

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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The levels for UC864-E-AUTO / AWS-AUTO UART are the CMOS levels:

Absolute Maximum Ratings

Absolute Maximum Ratings ---- Not Functional

Absolute Maximum Ratings Absolute Maximum Ratings

Parameter

Parameter Min

ParameterParameter Input level on any digital pin when on Input voltage on analog pins when on

Min Max

MinMin

-0.3V +3.0V

-0.3V +3.0 V

Operating Range

Operating Range ---- Interface

Operating Range Operating Range Level

Level Min

LevelLevel

Interface LLLLevels

Interface Interface

Min Max

MinMin

Input high level 2.0V 2.9 V

Input low level -0.3V 0.6V

Output high level 2.15V 2.6V

Output low level 0V 0.45V

Not Functional

Not FunctionalNot Functional

Max

MaxMax

evels

evelsevels

Max

MaxMax

The signals of the UC864-E-AUTO / AWS-AUTO serial port are:

Internal

PinPin

2525 26

2626 27

2727 28

2828

2929

3030

3131

3232

Signal

Signal I/O

SignalSignal

C103/TXD I Serial data input (TXD) from DTE Pull-Down CMOS 2.6V C104/RXD O Serial data output to DTE Pull-Up CMOS 2.6V

C107/DSR O Output for Data set ready signal (DSR) to DTE Pull-Down CMOS 2.6V

C106/CTS O Output for Clear to send signal (CTS) to DTE Pull-Up CMOS 2.6V

C108/DTR I

C125/RING O Output for Ring indicator signal (RI) to DTE Pull-Up CMOS 2.6V

C105/RTS I

C109/DCD O

I/O Function

I/OI/O

DTE

Function

FunctionFunction

InternalInternal

Pulls Up/Dn

Pulls Up/DnPulls Up/Dn

Pull-Up CMOS 2.6V

Pull-Down CMOS 2.6V

Pull-Up CMOS 2.6V

Type

TypeType

Internal pull-up or pull-down resistance is not a fixed value and it may differ from case by ca se. The resistance can be calculated from the DC characteristics considering a level of 2.6V DC. In this case I_ILPU(input low leakage current with pull-up) is between -60 and -10uA.

Then the resistance can be calculated as V/I=2.6/60u ~ 2.6/10u = 43.3K ~ 260K. In case of pull-down, it can be calculated in the same way.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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NOTE:

NOTE: NOTE:

According to V.24, RX/TX signal names are referred to the application side, therefore on the UC864-E-AUTO / AWS-AUTO side these signal are on the opposite direction: TXD on the application side will be connected to the receive line (here named TXD/ rx_uart ) of the UC864-E-AUTO / AWS-AUTO serial port and vice versa for RX.

TIP:

TIP: TIP:

For minimum implementation, only the TXD and RXD lines can be connected, the other lines can be left open provided a software flow control is implemented.

the

UC864-E-AUTO / AWS-AUTO Hardware User Guide

10.2. RS232 Level Translation

In order to interface the Telit UC864-E-AUTO / AWS-AUTO with a PC com port or a RS232 (EIA/TIA-232) application a level translator is required. This level translator must:

• invert the electrical signal in both directions;

• change the level from 0/2.6V to +15/-15V .

Actually, the RS232 UART 16450, 16550, 16650 & 16750 chipsets accept signals with lower levels on the RS232 side (EIA/TIA-562), allowing a lower voltage-multiplying ratio on the level translator. Note that the negative signal voltage must be less than 0V and hence some sort of level translation is always required.

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The simplest way to translate the levels and invert the signal is by using a single chip level translator. There are a multitude of them, differing in the number of drivers and receivers and in the levels (be sure to get a true RS232 level translator not a RS485 or other standards).

By convention the driver is the level translator from the 0-2.6V UART to the RS232 level. The receiver is the translator from the RS232 level to 0-2.6V UART.

In order to translate the whole set of control lines of the UART you will need:

• 5 drivers

• 3 receivers

NOTE:

NOTE: NOTE:

The digital input lines working at 2.6V CMOS have an absolute maximum input voltage of 3.0V; therefore the level translator IC shall not be powered by the +3.8V supply of the module. Instead, it must be powered from a +2.6V / +2.9V (dedicated) power supply.

This is because in this way the level translator IC outputs on the module side (i.e. UC864-E-AUTO / AWS-AUTO inputs) will work at +3.8V interface levels, damaging module inputs.

562

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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An example of level translation circuitry of this kind is:

The example is done with a SIPEX SP3282EB RS232 Transceiver that could accept supply voltages lower than 3V DC.

NOTE:

NOTE: NOTE:

In this case Vin has to be set with a value compatible with the logic levels of the module. (Max 2.9V DC). In this configuration the SP3282EB will adhere to EIA/TIAvoltage levels instead of RS232 (-5 ~ +5V)

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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Second solution could be done using a MAXIM transceiver (MAX218) In this case the

compliance with RS232 (+-5V) is possible.

Another level adapting method could be done using a standard RS232 Transceiver (MAX3237EAI) adding some resistors to adapt the levels on the UC864 Input lines.

NOTE: In this case has to be taken in account the length of the lines on the application to avoid problems in case of High-speed rates on RS232.

The RS232 serial port lines are usually connected to a DB9 connector with the following layout: signal names and directions are named and defined from the DTE point of view.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

10.3. 5V UART Level Transition

If the OEM application uses a microcontroller with a serial port (UART) that works at

a voltage different from 2.6 – 2.9V, then a circuitry has to adapt the different levels of

the two signal sets. As for the RS232 translation, there are a multitude of single chip translators. For example a possible translator circuit for a 5V TRANSMITTER/RECEIVER can be:

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TIP:

TIP: TIP:

This logic IC for the level translator and 2.6V pull-ups (not the 5V one) can be powered directly from PWRMON line of UC864-E-AUTO / AWS-AUTO. Note that the TC7SZ07AE has open drain output; therefore the resistor R2 is mandatory.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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A power source of the internal interface voltage corresponding to the 2.6V CMOS high level is available at the VAUX pin on the connector.

A maximum of 9 resistors of 47 KΩ pull-up can be connected to the VAUX pin, provided no other devices are connected to it and the pulled-up lines are UC864-EAUTO / AWS-AUTO input lines connected to open collector outputs in order to avoid latch-up problems on UC864-E-AUTO / AWS-AUTO.

Careful approach is needed to avoid latch-up on UC864-E-AUTO / AWS-AUTO and the use of this output line to power electronic devices must be avoided, especially for devices that generate spikes and noise such as switching level translators, micro controllers, failure in any of these condition can severely compromise the UC864-EAUTO / AWS-AUTO functionality.

NOTE:

NOTE: NOTE:

The input lines working at 2.6VCMOS can be pulled-up with 47KΩ resistors that can be connected directly to the VAUX line. It is a must that they are connected as in this example.

The preferable configuration is having external supply for the buffer.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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11. Audio Section Overview

The

Baseband

both in RX and in A couple of amplifiers had to be used with internal audio transducers while the other couple of amplifiers had to be used with external audio transducers. To distinguish the schematic signals and the Software identifiers, two different definitions were introduced, with the following meaning:

• internal audio transducers

• external audio transducers 

Actually the acronyms have not the original importance. In other words this distinction is not necessary, being the performances between the two blocks like the same. Only if yhe customer needs higher output power to the speaker , he has a constraint. Otherwise the choice could be done in order to overcome the PCB design difficulties.

For these reasons we have not changed the HS and HF acronyms, keeping them in the Software and on the schematics. The Base Band Chip of the UC864-E-AUTO / AWS-AUTO Telit Module maintains the same architecture.

For more information refer to Telit document:

Audio Section Overview

Audio Section OverviewAudio Section Overview

chip was developed for the cellular phones, which needed two separated amplifiers

section.

 HS/MT

HS/MT

HS/MTHS/MT HF

HF HF

„

80000NT10025a UC864 Audio Settings Application Note

80000NT10025a UC864 Audio Settings Application Note“

80000NT10025a UC864 Audio Settings Application Note80000NT10025a UC864 Audio Settings Application Note

(from

(from HandsFree )

HHHHandSSSSet

MMMMicroTTTTelephone

)

11.1.

Moreover the transmit path and the receive path, enabled at request in both modes.

Selecti

Selection mode

SelectiSelecti

Only one block can be active at a time, and the activation of the requested audio path is done via hardware by

Sidetone

SidetoneSidetone

on mode

on modeon mode

AXE

line or via software by

AXEAXE

functionality could be implemented by the amplifier fitted between the

AT#CAP

AT#CAPAT#CAP

command.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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Bias

Single ended

Balanced

Single ended

Balanced

Single ended

100nF

Ear MT+

Ear MT-

MIC MT+

MIC MT-

Ear_HF+

Ear_HF-

EAR1ONP (EAR_AMP1)

Differential Driver 32 Handset

EAR1OP (EAR_AMP1)

MIC1P

MIC 1

MIC1N

Baseband Audio Front End

HPH_R (EAR_AMP3)

Mono Differential Headphone 32 Load

HPH_L (EAR_AMP2)

Bias

Mic_HF+

100nF

MIC2P

MIC 2

Balanced

Single ended

UC864-E-AUTO / AWS-AUTO Audio Front End (

100nF

Mic_HF-

MIC2N

AFE

AFEAFE

uc864afe.skd

)

908mV

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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11.2. Electrical Characteristics

11.2.1. Input Lines

Electrical Characteristics

Electrical CharacteristicsElectrical Characteristics

TIP:

TIP: Being the microphone circuitry the more noise sensitive, its design and layout

TIP: TIP: must be realized with particular care. Both microphone paths are balanced and the OEM circuitry must be balanced designed to reduce the common mode noise typically generated on the ground plane. However the customer can use the unbalanced circuitry for particular application.

((((

MIC1 and MIC2

MIC1 and MIC2MIC1 and MIC2

Line coupling AC (*) Line type Balanced / Unbalanced Coupling capacitor Differential input impedance 20Kohm Differential input voltage

“Mic_MT” and “Mic_HF”

“Mic_MT” and “Mic_HF” microphone paths

“Mic_MT” and “Mic_HF”“Mic_MT” and “Mic_HF”

(*) WARNING :

(*) WARNING : AC means that the signals from the microphone have to be

(*) WARNING : (*) WARNING : connected to input lines of the module through capacitors which value has to be • 100nf. not respecting this constraint, the input stages will be damaged.

WARNING:

WARNING: when particular OEM application needs a

WARNING: WARNING: configuration, it is forbidden connecting the unused input directly to Ground, but only through a 100nF capacitor. Don’t forget that thus the useful input signal will be halved.

))))

Characteristics

100nF

(≤ 1290mV

rms

@ MicG=0dB

)

rms

Single Ended Input

tial

ended

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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11.3. OUTPUT LINES

((((

Speaker)

Speaker)Speaker)

We suggest driving the load differentially from both output drivers, thus the output swing will double and the need for the output coupling capacitor avoided. If a particular OEM application needs a power will be reduced four times.

The OEM circuitry shall be designed to reduce the common mode noise typically generated on the ground plane and to get the maximum power output from the device (low resistance tracks).

(*) WARNING:

(*) WARNING:(*) WARNING:

Using single ended configuration, the unused output line must be left open.

Not respecting this constraint, the output stage will be damaged.

11.3.1. Output Lines Characteristics

Line coupling differential

single-ended Output load impedance differential 32 ohm (≤ 26) Differential output impedance ≤ 01 ohm @1.02kHz Signal bandwidth 150 - 4000 Hz @ -3 dB Differential output voltage (typ.) 1060 mV Max Output Power 70mW @ 32 ohm Max load capacitance 500pF

Single Ended Output

DC AC

/32 ohm

configuration the output

“

Ear_MT

Ear_MT” Output

Ear_MTEar_MT

Output

OutputOutput

(

EAR_AMP1

differential amplifier)

Line coupling differen

single-ended

Output load impedance differential

single-

S.E. output impedance ≤ 0,5 ohm @ 1.02kHz signal bandwidth 150 - 4000 Hz @ -3 dB Differential output voltage (typ.) 833 mV Max Output Power @ 32 ohm

@ 16 ohm

Max load capacitance 1000pF

“

Ear_HF

Ear_HF”

Ear_HFEar_HF

Output

OutputOutput

DC AC 32 ohm (≤ 26) 16 ohm (≤ 12)

/32 ohm 44mW differential 22mW single-ended

(

EAR_AMP2 + EAR_AMP3

amplifiers)

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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12. General Purpose I/O

General Purpose I/O

General Purpose I/OGeneral Purpose I/O

The general-purpose I/O pads can be configured to act in three different ways:

• input

• output

• alternate function (internally controlled)

Input pads can only be read and report the digital value (high or low) present on the pad at the read time; output pads can only be written or queried and set the value of the pad output; an alternate function pad is internally controlled by the UC864-EAUTO / AWS-AUTO firmware and acts depending on the function implemented.

The following GPIOs are available on the UC864-E-AUTO / AWS-AUTO:

Drive

Signal

Signal I/O

PINPIN

SignalSignal

70 GPIO_01 I/O GPIO01 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

74 GPIO_02 I/O GPIO02 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

66 GPIO_03 I/O GPIO03 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

59 GPIO_04 I/O GPIO04 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

78 GPIO_05 I/O GPIO05 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

68 GPIO_06 I/O GPIO06 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

73 GPIO_07 I/O GPIO07 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

67 GPIO_08 I/O GPIO08 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

76 GPIO_09 I/O GPIO09 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

63 GPIO_10 I/O GPIO10 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

57 GPIO_11 I/O GPIO11 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

62 GPIO_12 I/O GPIO12 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

77 GPIO_13 I/O GPIO13 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

TGPIO_1

61 GPIO_15 I/O GPIO15 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

75 GPIO_16 I/O GPIO16 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

71 GPIO_17 I/O GPIO17 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

65 GPIO_18 I/O GPIO18 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

I/O

I/OI/O

I/O GPIO14 Configurable GPIO CMOS 2.6V 2mA INPUT LOW HIGH

Function

Function Type

FunctionFunction

Type

TypeType

Drive Drive

strength

strengthstrength

Default

Default Default

State

StateState

ON_OFF

ON_OFF ON_OFF

State

StateState

Reset

Reset Reset

State

StateState

Alternate

Function (RF

Transmission

Control)

Alternate

Function

(RFTXMON)

Alternate

function

(ALARM)

Alternate

function

(BUZZER)

Note

NoteNote

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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56 GPIO_19 I/O GPIO19 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

58 GPIO_20 I/O GPIO20 Configurable GPIO CMOS 2.6V 2mA INPUT LOW LOW

72 GPIO_21 I/O GPIO21 Configurable GPIO CMOS 2.6V 2mA INPUT HIGH HIGH

64 GPIO_22 I/O GPIO22 Configurable GPIO

Not all GPIO pads support all these three modes:

• GPIO4 supports all three modes and can be input, output, RF

Transmission Control (Alternate function)

• GPIO5 supports all three modes and can be input, output, RFTX monitor

output (Alternate function)

• GPIO6 supports all three modes and can be input, output, alarm output

(Alternate function)

CMOS 1.8V

(not 2.6V)

2mA INPUT LOW HIGH

• GPIO7 supports all three modes and can be input, output, buzzer output

(Alternate function)

Some alternate functions for UC864-E-AUTO / AWS-AUTO may be added if needed.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

12.1. Logic Level Specifications

Where not specifically stated, all the interface circuits work at 2.6V CMOS logic levels.

The following table shows the logic level specifications used in the UC864-E-AUTO / AWS-AUTO interface circuits:

Absolute Maximum Ratings

Absolute Maximum Ratings ----Not Functional

Absolute Maximum Ratings Absolute Maximum Ratings

UC864

UC864----EEEE----AUTO

Parameter

ParameterParameter

Input level on any digital pin when on Input voltage on analog pins when on

UC864UC864

-0.3V +3.0V

-0.3V +3.0 V

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Not Functional

Not FunctionalNot Functional

AUTO / AWS

AUTOAUTO

Min

Min Max

MinMin

/ AWS----AUTO

/ AWS/ AWS

Max

MaxMax

AUTO

AUTOAUTO

For 2.6V CMOS signals;

Operating Range

Operating Range ---- Interface levels

Operating Range Operating Range

Level

LevelLevel

Input high level 2.0V 2.9 V

Input low level -0.3V 0.6V

Output high level 2.15V 2.6V

Output low level 0V 0.45V

For 1.8V signals:

Operating Range

Operating Range ---- Interface levels (1.8V CMOS)

Operating Range Operating Range

Level

LevelLevel

Input high level 1.5V 2.1V

Input low level -0.3V 0.5V

Output high level 1.35V 1.8V

Output low level 0V 0.45V

Interface levels

Interface levelsInterface levels

UC864

UC864----EEEE----AUTO

UC864UC864

Interface levels (1.8V CMOS)

Interface levels (1.8V CMOS)Interface levels (1.8V CMOS)

UC864

UC864----EEEE----AUTO

UC864UC864

AUTO / AWS

AUTOAUTO

Min

Min Max

MinMin

AUTO / AWS

AUTOAUTO

Min

Min Max

MinMin

/ AWS----AUTO

/ AWS/ AWS

Max

MaxMax

/ AWS----AUTO

/ AWS/ AWS

Max

MaxMax

AUTO

AUTOAUTO

AUTO

AUTOAUTO

UC864-E-AUTO / AWS-AUTO Hardware User Guide

12.2. Using a GPIO Pad as Input

The GPIO pads, when used as inputs, can be connected to a digital output of another device and report its status, provided this device has interface levels compatible with the 2.6V CMOS levels of the GPIO.

If the digital output of the device is connected with the GPIO input, the pad has interface levels different from the 2.6V CMOS. It can be buffered with an open collector transistor with a 47KΩ pull-up resistor to 2.6V.

12.3. Using a GPIO Pad as Output

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The GPIO pads, when used as outputs, can drive 2.6V CMOS digital devices or compatible hardware. When set as outputs, the pads have a push-pull output and therefore the pull-up resistor may be omitted.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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12.4. Using the RF Transmission Control GPIO4

The GPIO4 pin, when configured as RF Transmission Control Input, permits to disable the Transmitter when the GPIO is set to Low by the application. In the design it is necessary to add a pull up resistor (47K to PWRMON).

12.5. Using the RFTXMON Output GPIO5

The GPIO5 pin, when configured as RFTXMON Output, is controlled by the UC864-EAUTO / AWS-AUTO module and will rise when the transmitter is active and fall after the transmitter activity is completed.

For example, if a call is started, the line will be HIGH during all conversations and it will be again LOW after hanged up.

The line rises up 300ms before first TX burst and will become again LOW from 500ms to 1sec after last TX burst.

12.6. Using the Alarm Output GPIO6

The GPIO6 pad, when configured as Alarm Output, is controlled by the UC864-EAUTO / AWS-AUTO module and will rise when the alarm starts and fall after the issue of a dedicated AT command.

This output can be used to power up the UC864-E-AUTO / AWS-AUTO controlling microcontroller or application at the alarm time, giving you the possibility to program a timely system wake-up to achieve some periodic actions and completely turn off either the application or the UC864-E-AUTO / AWS-AUTO during sleep periods. This will dramatically reduce the sleep consumption to few µA.

In battery-powered devices this feature will greatly improve the autonomy of the device.

NOTE:

NOTE: NOTE:

During RESET the line is set to HIGH logic level.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

12.7. Using the Buzzer Output GPIO7

As Alternate Function, the GPIO7 is controlled by the firmware that depends on the function implemented internally.

This setup places always the GPIO7 pin in OUTPUT direction and the corresponding function must be activated properly by AT#SRP command (refer to AT commands specification).

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Also in this case, the

send the command AT#GPIO=7, 1, 2<cr>:

wait for response OK

send the command AT#SRP=3

The GPIO7 pin will be set as

HIGH

value.

The "Alternate function” permits your application to easily implement Buzzer feature

with some small hardware extension of your application as shown in the next sample figure.

dummy value

Alternate Function

for the pin state can be both “0” or “1”.

pin with its dummy logic status set to

NOTE:

NOTE: NOTE:

To correctly drive a buzzer, a driver must be provided. its characteristics depend on the buzzer. Refer to your buzzer vendor.

UC864-E-AUTO / AWS-AUTO Hardware User Guide

12.8. Magnetic Buzzer Concepts

12.8.1. Short Description

A magnetic Buzzer is a sound-generating device with a coil located in the magnetic circuit consisting of a permanent magnet, an iron core, a high permeable metal disk and a vibrating diaphragm.

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Drawing of the Magnetic Buzzer.

The disk and diaphragm are attracted to the core by the magnetic field. When an oscillating signal is moved through the coil, it produces a fluctuating magnetic field, which vibrates the diaphragm at a frequency of the drive signal. Thus the sound is produced as relative to the frequency applied.

Diaphragm movement.

12.8.2. Frequency Behavior

The frequency behavior represents the effectiveness of the reproduction of the applied signals. Because its performance is related to a square driving waveform (whose amplitude varies from 0V to Vpp), if you modify the waveform (e.g. from square to sinus) the frequency response will change.

12.8.3. Power Supply Influence

After applying a signal with a different amplitude from suggested by the

manufacturer, a performance change will follow, according to the rule “

frequency ffff

Because resonance frequency depends on acoustic design and lowering the amplitude of the driving signal, the response bandwidth tends to become narrow, and vice versa.

oooo

increases, amplitude decreases

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

if resonance

”.

Summarizing:

The risk is that the

Vpp ↑  ffff

ffff

could easily fall outside of new bandwidth; consequently the

o o

↓

o o

SPL could be much lower than the expected.

WARNING

WARNING:

WARNINGWARNING

It is very important to respect the sense of the applied voltage: never apply to the "-" pin a voltage more positive than "+" pin. If this happens, the diaphragm vibrates in the opposite sense with a high probability to be expelled from its physical position. This damages the device permanently.

12.8.4. Working Current Influence

In the component data sheet you will find the value of MAX CURRENT: this represents the maximum average current that can flow at nominal voltage without current limitation.

In other words it is not the peak current, which could be twice or three times higher. If driving circuitry does not support these peak values, the SPL will never reach the declared level or the oscillations will stop.

Vpp  ffff

↑

o o

UC864-E-AUTO / AWS-AUTO Hardware User Guide

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12.9. Using the Temperature Monitor Function

12.9.1. Short Description

The Temperature Monitor is a function of the module that permits to control its internal temperature and if properly set (see the #TEMPMON command on AT Interface guide) it raises to High Logic level a GPIO when the maximum temperature is reached.

12.9.2. Allowed GPIO

The AT#TEMPMON set command could be used with one of the following GPIO:

Drive

Signal

Signal Function

SignalSignal

GPIO_01 GPIO01 Configurable GPIO CMOS 2.6V 2mA

GPIO_03 GPIO03 Configurable GPIO CMOS 2.6V 2mA

GPIO_08 GPIO08 Configurable GPIO CMOS 2.6V 2mA

GPIO_09 GPIO09 Configurable GPIO CMOS 2.6V 2mA

GPIO_10 GPIO10 Configurable GPIO CMOS 2.6V 2mA

GPIO_11 GPIO11 Configurable GPIO CMOS 2.6V 2mA

GPIO_12 GPIO12 Configurable GPIO CMOS 2.6V 2mA

GPIO_13 GPIO13 Configurable GPIO CMOS 2.6V 2mA

GPIO_14 GPIO14 Configurable GPIO CMOS 2.6V 2mA

GPIO_15 GPIO15 Configurable GPIO CMOS 2.6V 2mA

GPIO_16 GPIO16 Configurable GPIO CMOS 2.6V 2mA

GPIO_17 GPIO17 Configurable GPIO CMOS 2.6V 2mA

GPIO_18 GPIO18 Configurable GPIO CMOS 2.6V 2mA

GPIO_19 GPIO19 Configurable GPIO CMOS 2.6V 2mA

GPIO_20 GPIO20 Configurable GPIO CMOS 2.6V 2mA

GPIO_22 GPIO22 Configurable GPIO

Function Type

FunctionFunction

Type

TypeType

CMOS 1.8V (not

2.6V)

Drive Drive

strength

strengthstrength

2mA

Note

NoteNote

UC864-E-AUTO / AWS-AUTO Hardware User Guide

The set command could be used also with one of the following GPIO but in that case the alternate function is not usable:

Sign

Signal

al Function

SignSign

alal

GPIO_02 GPIO02 Configurable GPIO CMOS 2.6V 2mA

GPIO_04 GPIO04 Configurable GPIO CMOS 2.6V 2mA

GPIO_05 GPIO05 Configurable GPIO CMOS 2.6V 2mA

GPIO_07 GPIO07 Configurable GPIO CMOS 2.6V 2mA

Function Type

FunctionFunction

Type

TypeType

1vv0300795 Rev.11 – 2010/11/18

Drive

Drive Drive

strength

strengthstrength

Alternate Function (RF

Transmission Control)

Note

NoteNote

Alternate

function(JDR)

Alternate Function

(RFTXMON)

Alternate function

(BUZZER)

UC864-E-AUTO / AWS-AUTO Hardware User Guide

1vv0300795 Rev.11 – 2010/11/18

12.10. Indication of Network Service Availability

The STAT_LED pin status shows information on the network service availability and Call status. In the UC864-E-AUTO / AWS-AUTO modules, the STAT_LED usually needs an external transistor to drive an external LED. Because of the above, the status indicated in the following table is reversed with respect to the pin status:

LED status

LED status Device

LED statusLED status

Permanently off Device off

Fast blinking

(Period 1s, Ton 0,5s)

Slow blinking

(Period 3s, Ton 0,3s)

Permanently on a call is active

Net search / Not registered / turning off Registered full service

Device Status

DeviceDevice

Status

StatusStatus

12.11. RTC Bypass Out

The VRTC pin brings out the Real Time Clock supply, which is separate from the rest of the digital part, allowing having only RTC going on when all the other parts of the device are off. To this power output a backup capacitor can be added in order to increase the RTC autonomy during power off of the battery.

NOTE: NO devices must be powered from this pin.

12.12. VAUX1 Power Output

A regulated power supply output is provided in order to supply small devices from the module. This output is active when the module is ON and goes OFF when the module is shut down. The operating range characteristics of the supply are:

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Operating Range

Operating Range –

Operating Range Operating Range

Min

Output voltage

Output voltage 2.6V 2.65V 2.7V

Output voltageOutput voltage Output current

Output current 100mA

Output currentOutput current

Output bypass capacitor

Output bypass capacitorOutput bypass capacitor

(Inside the module)

(Inside the module)(Inside the module)

VAUX1 power supply

VAUX1 power supplyVAUX1 power supply

Min Typical

MinMin

2.2µF

Typical Max

TypicalTypical

Max

MaxMax

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13. DAC and ADC section

DAC and ADC section

DAC and ADC sectionDAC and ADC section

13.1. DAC Converter

13.1.1. Description

The UC864-E-AUTO / AWS-AUTO module provides a Digital to Analog Converter. The signal (named DAC_OUT) is available on pin 40 of the UC864-E-AUTO / AWS-AUTO module and on pin 17 of PL102 on EVK2 Board (KS101C).

The on board DAC is a 16-bit converter, able to generate an analogue value based on a specific input in the range from 0 up to 65535 but recalibrated in the range from 0 to 1023. However, an external low-pass filter is necessary.

Min

Voltage range (filtered) 0 2.6 Volt

Range 0 1023 Steps

The precision is 1023 steps, so if we consider that the maximum voltage is 2V, the integrated voltage could be calculated with the following formula:

Integrated output voltage = 2 * value / 1023

Min Max

MinMin

Max Units

MaxMax

Units

UnitsUnits

DAC_OUT line must be integrated (for example with a low band pass filter) in order to obtain an analog voltage.

13.1.2. Enabling DAC

An AT command is available to use the DAC function. The command is:AT#DAC[=<enable>[,<value>]]

<value> - scale factor of the integrated output voltage (0..1023 - 10 bit precision)

it must be present if <enable>=1

Refer to SW User Guide or AT Commands Reference Guide for the full description of this function.

NOTE:

NOTE: NOTE:

The DAC frequency is selected internally. D/A converter must not be used during POWERSAVING.

13.1.3. Low Pass Filter Example

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13.2. ADC Converter

13.2.1. Description

The on board ADCs are 8-bit converters. They are able to read a voltage level in the range of 0-2 volts applied on the ADC pin input and store and convert it into 8 bit word.

Min

Input Voltage range 0 2 Volt

AD conversion - 8 bits

Resolution - < 10.2 mV

The UC864-E-AUTO / AWS-AUTO module provides 3 Analog to Digital Converters. The input lines are:

ADC_IN1 available on Pin 37 and Pin 19 of PL102 on EVK2 Interface.

ADC_IN2 available on Pin 38 and Pin 20 of PL102 on EVK2 Interface.

ADC_IN3 available on Pin 39 and Pin 21 of PL102 on EVK2 Interface.

13.2.2. Using ADC Converter

Min Max

MinMin

Max Units

MaxMax

Units

UnitsUnits

An AT command is available to use the ADC function.

The command is AT#ADC=1,2 The read value is expressed in mV

Refer to SW User Guide or AT Commands Reference Guide for the full description of this function.

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14. Mounting the module on your board

Mounting the module on your board

Mounting the module on your boardMounting the module on your board

The position of the Molex board-to-board connector and pin 1 are shown in the following picture.

NOTE:

NOTE: NOTE:

The Metal taps present on UC864-E-AUTO / AWS-AUTO must be connected to GND

This module could not be processed with a reflow

UC864-E-AUTO / AWS-AUTO Hardware User Guide

14.1. Application PCB Layout

To obtain the best thermal dissipation it is suggested to design the host PCB as in the below image where a Ground area has been created below the module.

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Bottom side

Top View

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Top side

Top View

14.2. Clearance Area

Clearance area for SMT

Components

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14.3. Thermal Dissipation

To permit a better thermal dissipation it is suggested to use a Thermal conductive material between the module and the application PCB.

Suggested types are Bergquist (Two parts) GAP filler 3500 or GAP Filler 1500

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14.4. Module Soldering

The module could be soldered on the application in different kind of ways. Typical processes are follows:

• Manual Soldering

• Automatic Selective soldering

• Wave soldering

We suggest respecting necessary Clearance area in the design to permit a proper soldering process as shown in previous chapter.

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15. Application guide

Application guide

Application guideApplication guide

15.1. Debug of the UC864-E-AUTO /

To test and debug the mounting of UC864-E-AUTO / AWS-AUTO, we strongly recommend to foresee test pads on the host PCB, in order to check the connection between the UC864-E-AUTO / AWS-AUTO itself and the application and to test the performance of the module connecting it with an external computer. Depending on the customer application, these pads include, but are not limited to the following signals:

• TXD

• RXD

• ON/OFF

• RESET

• GND

• VBATT

• TX_TRACE

AWS-AUTO in production

• RX_TRACE

• PWRMON

• USB_VBUS

• USB_D+

• USB_D-

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15.2. Bypass capacitor on Power supplies

When a sudden voltage is asserted to or cut from the power supplies, the steep

transition makes some reactions such as the overshoot and undershoot.

This abrupt voltage transition can affect the device not to work or make it

malfunction.

The bypass capacitors are needed to alleviate this behavior and it can be affected

differently according to the various applications. The customers have to pay special

attention to this when they design their application board..

The length and width of the power lines need to be considered carefully and the

capacitance of the capacitors need to be selected accordingly.

The capacitor will also avoid the ripple of the power supplies and the switching noise

caused in TDMA system like GSM.

Specially the suitable bypass capacitor must be mounted on the Vbatt (Pin 1,2,3,4)

and USB_VBUS (Pin 48) lines in the application board.

The recommended values can be presented as;

 100uF for Vbatt  10uF for USB_VBUS

But the customers still have to consider that the capacitance mainly depends on the

conditions of their application board.

Generally more capacitance is required as the power line is longer.

15.3. SIM interface

The resistor value on SIMIO pulled up to SIMVCC should be defined accordingly in

order to be compliant to 3GPP specification.

6.8kohm can be recommended but it may depend on the application design..

Refer to the following document for the detail;

 Telit_SIM_interface_and ESD_protection_Application_note_r1

Analog input used to sense whether a peripheral device is

UC864-E-AUTO / AWS-AUTO Hardware User Guide

15.4. EMC recommendations

UC864-E-AUTO / AWS-AUTO signals are provided by some EMC protections. In any case the accepted levels are different on the pins. The characteristics are described in the following Table:

Pin Signal

PinPin

1,2,3,4

1,2,3,4 VBATT - Main power supply

1,2,3,41,2,3,4

SIMVCC - External SIM signal – Power supply for the SIM

1818

SIMRST O External SIM signal – Reset

1919

20 SIMIO I/O External SIM signal - Data I/O

2020

SIMCLK O External SIM signal – Clock

2222

Signal I/O

SignalSignal

I/O Function

I/OI/O

Function Contact

FunctionFunction

Power Supply

Power SupplyPower Supply

SIM Card Interface

SIM Card InterfaceSIM Card Interface

Miscellaneous Fun

Miscellaneous Functions

Miscellaneous FunMiscellaneous Fun

ctions

ctionsctions

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Contact Air

ContactContact

± 8KV

± 8KV ± 8KV ± 8KV ± 8KV

Air

AirAir

± 15KV

± 15KV ± 15KV ± 15KV ± 15KV

35 USB_ID AI

3535

48 USB_VBUS AI Power supply for the internal USB transceiver.

4848

50 VAUX1 - Power output for external accessories

5050

51, 52

51, 52 CHARGE AI Charger input

51, 5251, 52

53 ON/OFF I Input command for switching power ON or OFF (toggle command).

5353

54 RESET I Reset input

5454

55 VRTC AO Power supply for RTC block

5555

PAD

PAD Antenna Pad AI Antenna pad for Rosenberger connector

PADPAD

connected

Miscellaneous Functions

Miscellaneous FunctionsMiscellaneous Functions

Antenna

AntennaAntenna

± 8KV

± 8KV ± 8KV

± 8KV

All other pins have the following characteristics: HBM JESD22-A114-B ± 2000 V CDM JESD22-C101-C ± 500 V

The Board to Board connector has to be considered as NO TOUCH area.

Appropriate Series resistors has to be considered to protect the input lines from overvoltage.

± 15KV

± 15KV ± 15KV

± 15KV

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16. Pac

Packkkking system

PacPac

The Telit UC864-E-AUTO / AWS-AUTO is packaged on trays. Each tray contains 20 pieces with the following dimensions:

ing system

ing systeming system

NOTE:

NOTE: NOTE:

Trays can withstand the maximum temperature of 65° C.

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17. Conformity Assessment Issues

The Telit UC864 of the R&TTE Directive 1999/05/EC (Radio Equipment & Telecommunications Terminal Equipments) to demonstrate the conformity against the harmonized standards with the final involvement of a Notified Body.

If the module is installed in conformance to the Telit installation manuals, no further evaluation under Article 3.2 Directive Notified Body for the final product.

In all other cases, or if the manufacturer of the final product is in doubt, then the equipment integrating the radio module must be assessed against Article 3.2

In all cases the assessment of the final product must be made against the Essential requirements of the R&TTE Directive Articles 3.1(a)

3.3 requirements.

This Hardware User Guide contains all the information you may need for developing a product meeting the R&TTE Directive.

The Telit UC864 This device is to be used only for fixed and mobile applications. If the final product after integration is intended for portable use, a new application and FCC is required. The UC864

Article 3.2 of the R&TTE Directive and do not require further involvement of a R&TTE

Article 3.2Article 3.2

UC864----AWS

UC864UC864

Conformity Assessment Issues

Conformity Assessment IssuesConformity Assessment Issues

UC864----EEEE----AUTO

UC864UC864

UC864----AWS

UC864UC864

AWS----AUTO

AWSAWS

AUTO module has been assessed in order to satisfy the essential requirements

AUTOAUTO

Article 3.2 of the R&TTE Directive.

Article 3.2Article 3.2

Articles 3.1(a) and (b)

Articles 3.1(a)Articles 3.1(a)

AWS----AUTO

AUTO module is FCC Approved as module to be installed in other devices.

AWSAWS

AUTOAUTO

AUTO Module

AUTOAUTO

Module is conforming to the following US Directives:

ModuleModule

(b), Safety and EMC respectively, and any relevant Article

(b)(b)

• Use of RF Spectrum. Standards: FCC 47 Part 22 (GSM 850), Part 24 (PCS 1900) and Part 27 (FDD IV)

• EMC (Electromagnetic Compatibility). Standards: FCC47 Part 15

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

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To meet the FCC's RF exposure rules and regulations:

• The system antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all the persons and must not be co-located or operating in conjunction with any other antenna or transmitter.

•

The system antenna(s) used for this module must not exceed 7.18 dBi (GSM 850), 2.78 dBi (PCS 1900)

and 1.43 dBi (FDD IV) for mobile and fixed or mobile operating configurations.

• Users and installers must be provided with antenna installation instructions and transmitter

operating conditions for satisfying RF exposure compliance.

Manufacturers of mobile, fixed or portable devices incorporating this module are advised to clarify any regulatory questions and to have their complete product tested and approved for FCC compliance.

The FCC requires that you be notified that any changes or modifications made to the UC864-AWSAUTO module that are not expressly approved by Telit Communications S.p.A. may void your authority to operate the equipment.

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18. Safety R

Safety Recommendations

Safety RSafety R

Read carefully!

Be sure about that the use of this product is allowed in your country and in the environment required. The use of this product may be dangerous and has to be avoided in the following areas:

• Where it can interfere with other electronic devices in environments such as

hospitals, airports, aircrafts, etc.

• Where there is risk of explosion such as gasoline stations, oil refineries, etc.

It is responsibility of the user to enforce the country regulation and the specific environment regulation.

Do not disassemble the product; any mark of tampering will compromise the warranty validity.

We recommend following the instructions of the hardware user guides for a correct wiring of the product. The product has to be supplied with a stabilized voltage source and the wiring has to be conforming to the security and fire prevention regulations.

The product has to be handled with care, avoiding any contact with the pins because electrostatic discharges may damage the product itself. Same cautions have to be taken for the SIM, checking carefully the instruction for its use. Do not insert or remove the SIM when the product is in power saving mode.

The system integrator is responsible of the functioning of the final product; therefore, care has to be taken to the external components of the module, as well as of any project or installation issue, because the risk of disturbing the GSM network or external devices or having impact on the security. Should there be any doubt, please refer to the technical documentation and the regulations in force.

ecommendations

ecommendationsecommendations

Every module has to be equipped with a proper antenna with specific characteristics. The antenna has to be installed with care in order to avoid any interference with other electronic devices and has to be installed with the guarantee of a minimum 20 cm distance from the body. In case of this requirement cannot be satisfied, the system integrator has to assess the final product against the SAR regulation.

The European Community provides some Directives for the electronic equipments introduced on the market. All the relevant information are available on the European Community website:

http://europa.eu.int/comm/enterprise/rtte/dir99-5.htm

The text of the Directive 99/05 regarding telecommunication equipments is available, while the applicable Directives (Low Voltage and EMC) are available at:

http://europa.eu.int/comm/enterprise/rtte/dir99-5.htm

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19. Document Change Log

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Rev.0 2008/10/22 Initial release Rev.1 2009/04/02 Updated with new HW design of solder tags, added info on Pull up/down

Rev.2 2009/06/11 Updated with new Module Drawings, updated ESD data, pinout. Rev.3 2009/07/08 Updated Drawings of the module

Rev.4 2009/10/29 Updated On Off timings Rev.5 2009/11/09 Corrected Note on Chapter 4.2 (was related to E version and not to E-

Rev. 6 2010/05/06 Updated digital operating levels; added UC864-AWS-AUTO product

Rev. 7 2010/07/02 Added section on Temperature Ranges Rev. 8 2010/10/14 Conformity Assessment Issues section updated

Rev. 9 2010/10/25 Conformity Assessment Issues section updated Rev. 10 2010/11/10 Section 7.1 and Conformity Assessment Issues updated Rev. 11 2010/11/18 Section 7.1 and Conformity Assessment Issues updated

Document Change Log

Document Change LogDocument Change Log

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values on I/O lines, added soldering info Updated ESD data

Updated Turning ON/OFF Updated Power supply : Consumption for GPRS/EDGE Class 12 Updated Audio section Added Buzzer concept Updated Application guide Updated Packaging Tray dimensions

AUTO)

Updated GSM/WCDMA Antenna requirement Updated 9 USB Port

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Telit Communications S p A UC864AWA User Guide

Specifications and Main Features

Frequently Asked Questions

User Manual