TOSHIBA TMP86CH22UG Technical data

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8 Bit Microcontroller

TLCS-870/C Series

TMP86CH22UG

The information contained herein is subject to change without notice. 021023 _ D

TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications.

Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc. 021023_A

The Toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These Toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of

human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc. Unintended Usage of Toshiba products listed in this document shall be made at the customer's own risk. 021023_B

The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. 060106_Q

The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. 021023_C

The products described in this document may include products subject to the foreign exchange and foreign trade laws. 021023_F

For a discussion of how the reliability of microcontrollers can be predicted, please refer to Section 1.3 of the chapter entitled Quality and Reliability Assurance/Handling Precautions. 030619_S

Page 2

Revision History

Date Revision

2005/12/8 1 First Release

2006/9/8 2 Contents Revised

2008/8/29

3 Contents Revised

Caution in Setting the UART Noise Rejection Time

When UART is used, settings of RXDNC are limited depending on the transfer clock specified by BRG. The com-

bination "O" is available but please do not select the combination "–".

The transfer clock generated by timer/counter interrupt is calculated by the following equation : Transfer clock [Hz] = Timer/counter source clock [Hz] ÷ TTREG set value

RXDNC setting

BRG setting

000 fc/13 O O O – 110

(When the transfer clock gen-

erated by timer/counter inter-

rupt is the same as the right

side column) The setting except the aboveOOOO

Transfer

clock [Hz]

fc/8 O – – –

fc/16 O O – –

fc/32OOO–

(No noise rejection)

(Reject pulses shorter than 31/fc[s] as noise)

(Reject pulses shorter than 63/fc[s] as noise)

(Reject pulses shorter

than 127/fc[s] as

noise)

Table of Contents

TMP86CH22UG

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Pin Names and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. Operational Description

2.1 CPU Core Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1.1 Memory Address Map............................................................................................................................... 9

2.1.2 Program Memory (MaskROM).................................................................................................................. 9

2.1.3 Data Memory (RAM)............................................................................................................................... 10

2.2 System Clock Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2.1 Clock Generator...................................................................................................................................... 10

2.2.2 Timing Generator.................................................................................................................................... 12

2.2.2.1 Configuration of timing generator

2.2.2.2 Machine cycle

2.2.3 Operation Mode Control Circuit .............................................................................................................. 13

2.2.3.1 Single-clock mode

2.2.3.2 Dual-clock mode

2.2.3.3 STOP mode

2.2.4 Operating Mode Control ......................................................................................................................... 18

2.2.4.1 STOP mode

2.2.4.2 IDLE1/2 mode and SLEEP1/2 mode

2.2.4.3 IDLE0 and SLEEP0 modes (IDLE0, SLEEP0)

2.2.4.4 SLOW mode

2.3 Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.3.1 External Reset Input ............................................................................................................................... 31

2.3.2 Address trap reset .................................................................................................................................. 32

2.3.3 Watchdog timer reset.............................................................................................................................. 32

2.3.4 System clock reset.................................................................................................................................. 32

3. Interrupt Control Circuit

3.1 Interrupt latches (IL19 to IL2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.2 Interrupt enable register (EIR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.2.1 Interrupt master enable flag (IMF) .......................................................................................................... 36

3.2.2 Individual interrupt enable flags (EF19 to EF4) ...................................................................................... 37

Note 3: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.3 Interrupt Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.3.1 Interrupt acceptance processing is packaged as follows........................................................................ 39

3.3.2 Saving/restoring general-purpose registers ............................................................................................ 40

3.3.2.1 Using PUSH and POP instructions

3.3.2.2 Using data transfer instructions

3.3.3 Interrupt return ........................................................................................................................................ 41

3.4 Software Interrupt (INTSW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

3.4.1 Address error detection .......................................................................................................................... 42

3.4.2 Debugging .............................................................................................................................................. 42

3.5 Undefined Instruction Interrupt (INTUNDEF). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

3.6 Address Trap Interrupt (INTATRAP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

3.7 External Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4. Special Function Register (SFR)

4.1 SFR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.2 DBR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5. I/O Ports

5.1 Port P1 (P17 to P10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5.2 Port P2 (P22 to P20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.3 Port P3 (P37, P34 to P33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.4 Port P5 (P57 to P50) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

5.5 Port P6 (P64 to P61) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

5.6 Port P7 (P76 to P70) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

6. Watchdog Timer (WDT)

6.1 Watchdog Timer Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

6.2 Watchdog Timer Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

6.2.1 Malfunction Detection Methods Using the Watchdog Timer ................................................................... 64

6.2.2 Watchdog Timer Enable ......................................................................................................................... 65

6.2.3 Watchdog Timer Disable ........................................................................................................................ 66

6.2.4 Watchdog Timer Interrupt (INTWDT)...................................................................................................... 66

6.2.5 Watchdog Timer Reset ........................................................................................................................... 67

6.3 Address Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

6.3.1 Selection of Address Trap in Internal RAM (ATAS) ................................................................................ 68

6.3.2 Selection of Operation at Address Trap (ATOUT) .................................................................................. 68

6.3.3 Address Trap Interrupt (INTATRAP)....................................................................................................... 68

6.3.4 Address Trap Reset................................................................................................................................ 69

7. Time Base Timer (TBT)

7.1 Time Base Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

7.1.1 Configuration .......................................................................................................................................... 71

7.1.2 Control .................................................................................................................................................... 71

7.1.3 Function .................................................................................................................................................. 72

7.2 Divider Output (DVO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

7.2.1 Configuration .......................................................................................................................................... 73

7.2.2 Control .................................................................................................................................................... 73

8. 18-Bit Timer/Counter (TC1)

8.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

8.2 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

8.3 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

8.3.1 Timer mode............................................................................................................................................. 79

8.3.2 Event Counter mode............................................................................................................................... 80

8.3.3 Pulse Width Measurement mode............................................................................................................ 81

8.3.4 Frequency Measurement mode .............................................................................................................. 82

9. 8-Bit TimerCounter (TC5, TC6)

9.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

9.2 TimerCounter Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

9.3 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

9.3.1 8-Bit Timer Mode (TC5 and 6) ................................................................................................................ 91

9.3.2 8-Bit Event Counter Mode (TC5, 6) ........................................................................................................ 92

9.3.3 8-Bit Programmable Divider Output (PDO) Mode (TC5, 6)..................................................................... 92

9.3.4 8-Bit Pulse Width Modulation (PWM) Output Mode (TC5, 6).................................................................. 95

9.3.5 16-Bit Timer Mode (TC5 and 6) .............................................................................................................. 97

9.3.6 16-Bit Event Counter Mode (TC5 and 6) ................................................................................................ 98

9.3.7 16-Bit Pulse Width Modulation (PWM) Output Mode (TC5 and 6).......................................................... 98

9.3.8 16-Bit Programmable Pulse Generate (PPG) Output Mode (TC5 and 6) ............................................. 101

9.3.9 Warm-Up Counter Mode....................................................................................................................... 103

9.3.9.1 Low-Frequency Warm-up Counter Mode

9.3.9.2 High-Frequency Warm-Up Counter Mode

(NORMAL1 → NORMAL2 → SLOW2 → SLOW1)

(SLOW1 → SLOW2 → NORMAL2 → NORMAL1)

10. Real-Time Clock

10.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

10.2 Control of the RTC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

10.3 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

11. Asynchronous Serial interface (UART )

11.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

11.2 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

11.3 Transfer Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

11.4 Transfer Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

11.5 Data Sampling Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

11.6 STOP Bit Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

11.7 Parity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

11.8 Transmit/Receive Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

11.8.1 Data Transmit Operation .................................................................................................................... 112

11.8.2 Data Receive Operation ..................................................................................................................... 112

11.9 Status Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

11.9.1 Parity Error.......................................................................................................................................... 113

11.9.2 Framing Error...................................................................................................................................... 113

11.9.3 Overrun Error ...................................................................................................................................... 113

11.9.4 Receive Data Buffer Full..................................................................................................................... 114

11.9.5 Transmit Data Buffer Empty ............................................................................................................... 114

11.9.6 Transmit End Flag .............................................................................................................................. 115

12. Synchronous Serial Interface (SIO)

12.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

12.2 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

iii

12.3 Serial clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

12.3.1 Clock source ....................................................................................................................................... 119

12.3.1.1 Internal clock

12.3.1.2 External clock

12.3.2 Shift edge............................................................................................................................................ 121

12.3.2.1 Leading edge

12.3.2.2 Trailing edge

12.4 Number of bits to transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

12.5 Number of words to transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

12.6 Transfer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

12.6.1 4-bit and 8-bit transfer modes ............................................................................................................. 122

12.6.2 4-bit and 8-bit receive modes ............................................................................................................. 124

12.6.3 8-bit transfer / receive mode ............................................................................................................... 125

13. 8-Bit AD Converter (ADC)

13.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

13.2 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

13.3 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

13.3.1 AD Conveter Operation ...................................................................................................................... 130

13.3.2 AD Converter Operation ..................................................................................................................... 130

13.3.3 STOP and SLOW Mode during AD Conversion ................................................................................. 131

13.3.4 Analog Input Voltage and AD Conversion Result ............................................................................... 132

13.4 Precautions about AD Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

13.4.1 Restrictions for AD Conversion interrupt (INTADC) usage ................................................................. 133

13.4.2 Analog input pin voltage range ........................................................................................................... 133

13.4.3 Analog input shared pins .................................................................................................................... 133

13.4.4 Noise countermeasure........................................................................................................................ 133

14. Key-on Wakeup (KWU)

14.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

14.2 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

14.3 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

15. LCD Driver

15.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

15.2 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

15.2.1 LCD driving methods .......................................................................................................................... 139

15.2.2 Frame frequency................................................................................................................................. 140

15.2.3 LCD drive voltage ............................................................................................................................... 141

15.2.4 Adjusting the LCD panel drive capability ............................................................................................ 141

15.3 LCD Display Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

15.3.1 Display data setting ............................................................................................................................ 142

15.3.2 Blanking .............................................................................................................................................. 142

15.4 Control Method of LCD Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

15.4.1 Initial setting........................................................................................................................................ 143

15.4.2 Store of display data ........................................................................................................................... 143

15.4.3 Example of LCD driver output............................................................................................................. 145

16. Input/Output Circuit

16.1 Control pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

16.2 Input/Output Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

17. Electrical Characteristics

17.1 Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

17.2 Recommended Operating Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

17.3 DC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

17.4 LCD Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

17.5 AD Conversion Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

17.6 AC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

17.7 Timer Counter 1 input (ECIN) Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 161

17.8 Recommended Oscillating Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

17.9 Handling Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

18. Package Dimension

This is a technical document that describes the operating functions and electrical specifications of the 8-bit microcontroller series TLCS-870/C (LSI).

CMOS 8-Bit Microcontroller

TMP86CH22UG

Product No.

TMP86CH22UG

1.1 Features

1. 8-bit single chip microcomputer TLCS-870/C series

- Instruction execution time :

- 132 types & 731 basic instructions

2. 18interrupt sources (External : 5 Internal : 13)

3. Input / Output ports (I/O : 32 pins Output : 1 pin)

Large current output: 3pins (Typ. 20mA), LED direct drive

4. Watchdog Timer

5. Prescaler

- Time base timer

- Divider output function

6. 18-bit Timer/Counter : 1ch

- Timer Mode

- Event Counter Mode

- Pulse Width Measurement Mode

- Frequency Measurement Mode

7. 8-bit timer counter : 2 ch

- Timer, Event counter, Programmable divider output (PDO),

ROM

(MaskROM)

16384

bytes

RAM Package OTP MCU Emulation Chip

512

bytes

0.25 µs (at 16 MHz)

122 µs (at 32.768 kHz)

P-LQFP44-1010-0.80B TMP86PH22UG TMP86C923XB

Pulse width modulation (PWM) output,

060116EBP

• The information contained herein is subject to change without notice. 021023_D

• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc. 021023_A

• The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunctionor failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. 021023_B

• The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. 060106_Q

• The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. 021023_C

• The products described in this document are subject to the foreign exchange and foreign trade laws. 021023_E

• For a discussion of how the reliability of microcontrollers can be predicted, please refer to Section 1.3 of the chapter entitled Quality and Reliability Assurance/Handling Precautions. 030619_S

Page 1

1.1 Features TMP86CH22UG

Programmable pulse generation (PPG) modes

8. 8-bit UART : 1 ch

9. 8-bit SIO: 1 ch

10. 8-bit successive approximation type AD converter (with sample hold)

Analog inputs: 4ch

11. Key-on wakeup : 1 ch

12. LCD driver/controller

- LCD direct drive capability (MAX 23 seg × 4 com)

- 1/4,1/3,1/2duties or static drive are programmably selectable

13. Clock operation

Single clock mode

Dual clock mode

14. Low power consumption operation

STOP mode: Oscillation stops. (Battery/Capacitor back-up.)

SLOW1 mode: Low power consumption operation using low-frequency clock.(High-frequency clock

stop.)

SLOW2 mode: Low power consumption operation using low-frequency clock.(High-frequency clock

oscillate.)

IDLE0 mode: CPU stops, and only the Time-Based-Timer(TBT) on peripherals operate using high fre-

quency clock. Release by falling edge of the source clock which is set by TBTCR<TBTCK>.

IDLE1 mode: CPU stops and peripherals operate using high frequency clock. Release by interru-

puts(CPU restarts).

IDLE2 mode: CPU stops and peripherals operate using high and low frequency clock. Release by inter-

ruputs. (CPU restarts).

SLEEP0 mode: CPU stops, and only the Time-Based-Timer(TBT) on peripherals operate using low fre-

quency clock.Release by falling edge of the source clock which is set by TBTCR<TBTCK>.

SLEEP1 mode: CPU stops, and peripherals operate using low frequency clock. Release by interru-

put.(CPU restarts).

SLEEP2 mode: CPU stops and peripherals operate using high and low frequency clock. Release by

interruput.

15. Wide operation voltage:

4.5 V to 5.5 V at 16MHz /32.768 kHz

2.7 V to 5.5 V at 8 MHz /32.768 kHz

1.8 V to 5.5 V at 4.2MHz /32.768 kHz

Page 2

1.2 Pin Assignment

TMP86CH22UG

P52 (SEG21)

P51 (SEG22)

P53 (SEG20)

P55 (SEG18)

P56 (SEG17)

P70 (SEG15)

P73 (SEG12)

P57 (SEG16)

P72 (SEG13)

P71 (SEG14)

P54 (SEG19)

(SEG11) P74 (SEG10) P75

(SEG9) P76

COM3 COM2 COM1 COM0

VLC

(

PDO6/PWM6/PPG6/TC6) P33

PDO5/PWM5/TC5) P34

(

DVO) P37

(

3332313029282726252423

34 35 36 37 38 39 40 41 42 43 44

123456789

XIN

VSS

XOUT

VDD

TEST

(XTIN) P21

(XTOUT) P22

RESET

(INT5/STOP) P20

(ECIN/AIN1) P61

(ECNT/AIN2) P62

22 21 20 19 18 17 16 15 14 13 12

Figure 1-1 Pin Assignment

P50(SEG23) P17(SEG24/

SCK)

P16(SEG25/SO) P15(SEG26/SI) P14(SEG27/INT3) P13(SEG28/INT2) P12(SEG29/INT1) P11(SEG30/TXD) P10(SEG31/RXD) P64(AIN4/STOP2) P63(AIN3/INT0)

Page 3

1.3 Block Diagram

TMP86CH22UG

Figure 1-2 Block Diagram

Page 4

1.4 Pin Names and Functions

Table 1-1 Pin Names and Functions(1/3)

Pin Name Pin Number Input/Output Functions

P17 SEG24

SCK

PORT17

LCD segment output 24

Serial Clock I/O

TMP86CH22UG

P16 SEG25 SO

P15 SEG26 SI

P14 SEG27 INT3

P13 SEG28 INT2

P12 SEG29 INT1

P11 SEG30 TXD

P10 SEG31 RXD

P22 XTOUT

PORT16

LCD segment output 25

Serial Data Output

PORT15

LCD segment output 26

Serial Data Input

PORT14

LCD segment output 27

External interrupt 3 input

PORT13

LCD segment output 28

External interrupt 2 input

PORT12

LCD segment output 29

External interrupt 1 input

PORT11

LCD segment output 30

UART data output

PORT10

LCD segment output 31

UART data input

PORT22

Resonator connecting pins(32.768kHz) for inputting external

clock

P21 XTIN

P20

STOP

INT5

P37

DVO

P34 TC5

PDO5/PWM5

P33 TC6

PDO6/PWM6/PPG6

P57 SEG16

P56 SEG17

P55 SEG18

PORT21

Resonator connecting pins(32.768kHz) for inputting external

clock

PORT20

STOP mode release signal input

External interrupt 5 input

OOPORT37

Divider Output

PORT34

TC5 input

PDO5/PWM5 output

PORT33

TC6 input

PDO6/PWM6/PPG6 output

IOOPORT57

LCD segment output 16

IOOPORT56

LCD segment output 17

IOOPORT55

LCD segment output 18

Page 5

1.4 Pin Names and Functions

Table 1-1 Pin Names and Functions(2/3)

Pin Name Pin Number Input/Output Functions

TMP86CH22UG

P54 SEG19

P53 SEG20

P52 SEG21

P51 SEG22

P50 SEG23

P64 AIN4 STOP2

P63 AIN3

INT0

P62 AIN2 ECNT

P61 AIN1 ECIN

IOOPORT54

LCD segment output 19

IOOPORT53

LCD segment output 20

IOOPORT52

LCD segment output 21

IOOPORT51

LCD segment output 22

IOOPORT50

LCD segment output 23

PORT64

AD converter analog input 4

STOP2 input

PORT63

AD converter analog input 3

External interrupt 0 input

PORT62

AD converter analog input 2

ECNT input

PORT61

AD converter analog input 1

ECIN input

P76 SEG9

P75 SEG10

P74 SEG11

P73 SEG12

P72 SEG13

P71 SEG14

P70 SEG15

COM3 37 O LCD common output 3

COM2 38 O LCD common output 2

COM1 39 O LCD common output 1

COM0 40 O LCD common output 0

XIN 2 I Resonator connecting pins for high-frequency clock

IOOPORT76

LCD segment output 9

IOOPORT75

LCD segment output 10

IOOPORT74

LCD segment output 11

IOOPORT73

LCD segment output 12

IOIPORT72

LCD segment output 13

IOOPORT71

LCD segment output 14

IOOPORT70

LCD segment output 15

Page 6

TMP86CH22UG

Table 1-1 Pin Names and Functions(3/3)

Pin Name Pin Number Input/Output Functions

XOUT 3 O Resonator connecting pins for high-frequency clock

RESET 8 I Reset signal

TEST 4 I Test pin for out-going test. Normally, be fixed to low.

VDD 5 I +5V

VSS 1 I 0(GND)

Page 7

1.4 Pin Names and Functions TMP86CH22UG

Page 8

2. Operational Description

2.1 CPU Core Functions

The CPU core consists of a CPU, a system clock controller, and an interrupt controller.

This section provides a description of the CPU core, the program memory, the data memory, and the reset circuit.

2.1.1 Memory Address Map

The TMP86CH22UG memory is composed MaskROM, RAM, DBR(Data buffer register) and SFR(Special

function register). They are all mapped in 64-Kbyte address space. Figure 2-1 shows the TMP86CH22UG memory address map.

0000

SFR

RAM

003F

0040

023F

64 bytes

512

bytes

Special function register includes:

SFR:

I/O ports Peripheral control registers Peripheral status registers System control registers Program status word Random access memory includes:

RAM:

Data memory

Stac k

TMP86CH22UG

0F80

DBR

MaskROM

0FFF

C000

FFB0

FFBF

FFC0

FFDF

FFE0

FFFF

128

bytes

16384

bytes

Figure 2-1 Memory Address Map

2.1.2 Program Memory (MaskROM)

DBR: Data buffer register includes:

Peripheral control registers Peripheral status registers LCD display memory

MaskROM:

Vector table for interrupts

(16 bytes)

Vector table for vector call instructions (32 bytes)

Vector table for interrupts

(32 bytes)

Program memory

The TMP86CH22UG has a 16384 bytes (Address C000H to FFFFH) of program memory (MaskROM ).

Page 9

2. Operational Description

2.2 System Clock Controller

2.1.3 Data Memory (RAM)

The TMP86CH22UG has 512bytes (Address 0040H to 023FH) of internal RAM. The first 192 bytes (0040H to 00FFH) of the internal RAM are located in the direct area; instructions with shorten operations are available against such an area.

The data memory contents become unstable when the power supply is turned on; therefore, the data memory should be initialized by an initialization routine.

Example :Clears RAM to “00H”. (TMP86CH22UG)

SRAMCLR: LD (HL), A

TMP86CH22UG

LD HL, 0040H ; Start address setup

LD A, H ; Initial value (00H) setup

LD BC, 01FFH

INC HL

DEC BC

JRS F, SRAMCLR

2.2 System Clock Controller

The system clock controller consists of a clock generator, a timing generator, and a standby controller.

Clock

generator

XIN

High-frequency clock oscillator

XOUT

XTIN

Low-frequency clock oscillator

XTOUT

Figure 2-2 System Colck Control

2.2.1 Clock Generator

Timing generator control register

TBTCR

0036

Timing

generator

System clocks

Clock generator control

Standby controller

0038

0039

SYSCR2SYSCR1

System control registers

The clock generator generates the basic clock which provides the system clocks supplied to the CPU core and peripheral hardware. It contains two oscillation circuits: One for the high-frequency clock and one for the low-frequency clock. Power consumption can be reduced by switching of the standby controller to low-power operation based on the low-frequency clock.

The high-frequency (fc) clock and low-frequency (fs) clock can easily be obtained by connecting a resonator between the XIN/XOUT and XTIN/XTOUT pins respectively. Clock input from an external oscillator is also possible. In this case, external clock is applied to XIN/XTIN pin with XOUT/XTOUT pin not connected.

Page 10

TMP86CH22UG

(a) Crystal/Ceramic

resonator

Note:The function to monitor the basic clock directly at external is not provided for hardware, however, with dis-

abling all interrupts and watchdog timers, the oscillation frequency can be adjusted by monitoring the pulse which the fixed frequency is outputted to the port by the program. The system to require the adjustment of the oscillation frequency should create the program for the adjustment in advance.

High-frequency clock

XOUTXIN

(b) External oscillator

Figure 2-3 Examples of Resonator Connection

XOUTXIN

(Open)

Low-frequency clock

XTIN

XTOUT

XTIN

XTOUT

(Open)

Page 11

2. Operational Description

2.2 System Clock Controller

2.2.2 Timing Generator

The timing generator generates the various system clocks supplied to the CPU core and peripheral hardware from the basic clock (fc or fs). The timing generator provides the following functions.

2.2.2.1 Configuration of timing generator

1. Generation of main system clock

2. Generation of divider output (

DVO) pulses

3. Generation of source clocks for time base timer

4. Generation of source clocks for watchdog timer

5. Generation of internal source clocks for timer/counters

6. Generation of warm-up clocks for releasing STOP mode

7. LCD

TMP86CH22UG

SYSCK DV7CK

High-frequency

clock fc

Low-frequency

clock fs

The timing generator consists of a 2-stage prescaler, a 21-stage divider, a main system clock generator,

and machine cycle counters.

An input clock to the 7th stage of the divider depends on the operating mode, SYSCR2<SYSCK> and TBTCR<DV7CK>, that is shown in Figure 2-4. As reset and STOP mode started/canceled, the prescaler and the divider are cleared to “0”.

fc or fs

fc/4

1 21 432 87 109 1211 1413 1615

5 6 17 18 19 20 21

Multi-

plexer

Machine cycle countersMain system clock generator

Divider

B0 B1

A0 A1

Y0 Y1

Multiplexer

Warm-up controller

Watchdog timer

Timer counter, Serial interface, Time-base-timer, divider output, etc. (Peripheral functions)

Figure 2-4 Configuration of Timing Generator

Page 12

Timing Generator Control Register

TMP86CH22UG

TBTCR

(0036H)

Note 1: In single clock mode, do not set DV7CK to “1”. Note 2: Do not set “1” on DV7CK while the low-frequency clock is not operated stably. Note 3: fc: High-frequency clock [Hz], fs: Low-frequency clock [Hz], *: Don’t care Note 4: In SLOW1/2 and SLEEP1/2 modes, the DV7CK setting is ineffective, and fs is input to the 7th stage of the divider. Note 5: When STOP mode is entered from NORMAL1/2 mode, the DV7CK setting is ineffective during the warm-up period after

76543210

(DVOEN) (DVOCK) DV7CK (TBTEN) (TBTCK) (Initial value: 0000 0000)

DV7CK

release of STOP mode, and the 6th stage of the divider is input to the 7th stage during this period.

Selection of input to the 7th stage of the divider

0: fc/2 1: fs

[Hz]

2.2.2.2 Machine cycle

Instruction execution and peripheral hardware operation are synchronized with the main system clock.

The minimum instruction execution unit is called an “machine cycle”. There are a total of 10 different types of instructions for the TLCS-870/C Series: Ranging from 1-cycle instructions which require one machine cycle for execution to 10-cycle instructions which require 10 machine cycles for execution. A machine cycle consists of 4 states (S0 to S3), and each state consists of one main system clock.

1/fc or 1/fs [s]

R/W

Main system clock

State

Machine cycle

Figure 2-5 Machine Cycle

2.2.3 Operation Mode Control Circuit

The operation mode control circuit starts and stops the oscillation circuits for the high-frequency and lowfrequency clocks, and switches the main system clock. There are three operating modes: Single clock mode, dual clock mode and STOP mode. These modes are controlled by the system control registers (SYSCR1 and SYSCR2). Figure 2-6 shows the operating mode transition diagram.

2.2.3.1 Single-clock mode

Only the oscillation circuit for the high-frequency clock is used, and P21 (XTIN) and P22 (XTOUT) pins are used as input/output ports. The main-system clock is obtained from the high-frequency clock. In the single-clock mode, the machine cycle time is 4/fc [s].

S3S2S1S0 S3S2S1S0

(1) NORMAL1 mode

In this mode, both the CPU core and on-chip peripherals operate using the high-frequency clock.

The TMP86CH22UG is placed in this mode after reset.

Page 13

2. Operational Description

2.2 System Clock Controller TMP86CH22UG

(2) IDLE1 mode

In this mode, the internal oscillation circuit remains active. The CPU and the watchdog timer are

halted; however on-chip peripherals remain active (Operate using the high-frequency clock).

IDLE1 mode is started by SYSCR2<IDLE> = "1", and IDLE1 mode is released to NORMAL1 mode by an interrupt request from the on-chip peripherals or external interrupt inputs. When the IMF (Interrupt master enable flag) is “1” (Interrupt enable), the execution will resume with the acceptance of the interrupt, and the operation will return to normal after the interrupt service is completed. When the IMF is “0” (Interrupt disable), the execution will resume with the instruction which follows the IDLE1 mode start instruction.

(3) IDLE0 mode

In this mode, all the circuit, except oscillator and the timer-base-timer, stops operation.

This mode is enabled by SYSCR2<TGHALT> = "1".

When IDLE0 mode starts, the CPU stops and the timing generator stops feeding the clock to the peripheral circuits other than TBT. Then, upon detecting the falling edge of the source clock selected with TBTCR<TBTCK>, the timing generator starts feeding the clock to all peripheral circuits.

When returned from IDLE0 mode, the CPU restarts operating, entering NORMAL1 mode back again. IDLE0 mode is entered and returned regardless of how TBTCR<TBTEN> is set. When IMF = “1”, EF6 (TBT interrupt individual enable flag) = “1”, and TBTCR<TBTEN> = “1”, interrupt processing is performed. When IDLE0 mode is entered while TBTCR<TBTEN> = “1”, the INTTBT interrupt latch is set after returning to NORMAL1 mode.

2.2.3.2 Dual-clock mode

Both the high-frequency and low-frequency oscillation circuits are used in this mode. P21 (XTIN) and P22 (XTOUT) pins cannot be used as input/output ports. The main system clock is obtained from the high-frequency clock in NORMAL2 and IDLE2 modes, and is obtained from the low-frequency clock in SLOW and SLEEP modes. The machine cycle time is 4/fc [s] in the NORMAL2 and IDLE2 modes, and 4/fs [s] (122 µs at fs = 32.768 kHz) in the SLOW and SLEEP modes.

The TLCS-870/C is placed in the signal-clock mode during reset. To use the dual-clock mode, the lowfrequency oscillator should be turned on at the start of a program.

(1) NORMAL2 mode

In this mode, the CPU core operates with the high-frequency clock. On-chip peripherals operate

using the high-frequency clock and/or low-frequency clock.

(2) SLOW2 mode

In this mode, the CPU core operates with the low-frequency clock, while both the high-frequency clock and the low-frequency clock are operated. As the SYSCR2<SYSCK> becomes "1", the hardware changes into SLOW2 mode. As the SYSCR2<SYSCK> becomes “0”, the hardware changes into NORMAL2 mode. As the SYSCR2<XEN> becomes “0”, the hardware changes into SLOW1 mode. Do not clear SYSCR2<XTEN> to “0” during SLOW2 mode.

(3) SLOW1 mode

This mode can be used to reduce power-consumption by turning off oscillation of the high-frequency clock. The CPU core and on-chip peripherals operate using the low-frequency clock.

Page 14

TMP86CH22UG

Switching back and forth between SLOW1 and SLOW2 modes are performed by SYSCR2<XEN>. In SLOW1 and SLEEP modes, the input clock to the 1st stage of the divider is stopped; output from the 1st to 6th stages is also stopped.

(4) IDLE2 mode

In this mode, the internal oscillation circuit remain active. The CPU and the watchdog timer are halted; however, on-chip peripherals remain active (Operate using the high-frequency clock and/or the low-frequency clock). Starting and releasing of IDLE2 mode are the same as for IDLE1 mode, except that operation returns to NORMAL2 mode.

(5) SLEEP1 mode

In this mode, the internal oscillation circuit of the low-frequency clock remains active. The CPU, the watchdog timer, and the internal oscillation circuit of the high-frequency clock are halted; however, on-chip peripherals remain active (Operate using the low-frequency clock). Starting and releasing of SLEEP mode are the same as for IDLE1 mode, except that operation returns to SLOW1 mode. In SLOW1 and SLEEP1 modes, the input clock to the 1st stage of the divider is stopped; output from the 1st to 6th stages is also stopped.

(6) SLEEP2 mode

The SLEEP2 mode is the idle mode corresponding to the SLOW2 mode. The status under the SLEEP2 mode is same as that under the SLEEP1 mode, except for the oscillation circuit of the highfrequency clock.

(7) SLEEP0 mode

In this mode, all the circuit, except oscillator and the timer-base-timer, stops operation. This mode is enabled by setting “1” on bit SYSCR2<TGHALT>.

When SLEEP0 mode starts, the CPU stops and the timing generator stops feeding the clock to the peripheral circuits other than TBT. Then, upon detecting the falling edge of the source clock selected with TBTCR<TBTCK>, the timing generator starts feeding the clock to all peripheral circuits.

When returned from SLEEP0 mode, the CPU restarts operating, entering SLOW1 mode back again. SLEEP0 mode is entered and returned regardless of how TBTCR<TBTEN> is set. When IMF = “1”, EF6 (TBT interrupt individual enable flag) = “1”, and TBTCR<TBTEN> = “1”, interrupt processing is performed. When SLEEP0 mode is entered while TBTCR<TBTEN> = “1”, the INTTBT interrupt latch is set after returning to SLOW1 mode.

2.2.3.3 STOP mode

In this mode, the internal oscillation circuit is turned off, causing all system operations to be halted. The

internal status immediately prior to the halt is held with a lowest power consumption during STOP mode.

STOP mode is started by the system control register 1 (SYSCR1), and STOP mode is released by a

inputting (Either level-sensitive or edge-sensitive can be programmably selected) to the

STOP pin. After

the warm-up period is completed, the execution resumes with the instruction which follows the STOP mode start instruction.

Page 15

2. Operational Description

2.2 System Clock Controller TMP86CH22UG

IDLE1

mode

(a) Single-clock mode

IDLE2

mode

SLEEP2

mode

SLEEP1

mode

(b) Dual-clock mode

SYSCR2<TGHALT> = "1"

SYSCR2<IDLE> = "1"

Interrupt

SYSCR2<XTEN> = "0"

SYSCR2<IDLE> = "1"

Interrupt

SYSCR2<SYSCK> = "0"

SYSCR2<IDLE> = "1"

Interrupt

SYSCR2<XEN> = "1"

SYSCR2<IDLE> = "1"

Interrupt

Note 2

IDLE0

mode

NORMAL1

mode

NORMAL2

mode

SLOW2

mode

SLOW1

mode

Reset release

Note 2

SYSCR1<STOP> = "1"

STOP pin input

SYSCR2<XTEN> = "1"

SYSCR1<STOP> = "1"

STOP pin input

SYSCR2<SYSCK> = "1"

SYSCR2<XEN> = "0"

SYSCR1<STOP> = "1"

STOP pin input

SYSCR2<TGHALT> = "1"

RESET

STOP

SLEEP0

mode

Note 1: NORMAL1 and NORMAL2 modes are generically called NORMAL; SLOW1 and SLOW2 are called SLOW; IDLE0, IDLE1

and IDLE2 are called IDLE; SLEEP0, SLEEP1 and SLEEP2 are called SLEEP.

Note 2: The mode is released by falling edge of TBTCR<TBTCK> setting.

Figure 2-6 Operating Mode Transition Diagram

Table 2-1 Operating Mode and Conditions

Operating Mode

Single clock

Dual clock

Oscillator

High

Frequency

RESET

NORMAL1 Operate

IDLE1

STOP Stop Halt –

NORMAL2

IDLE2 Halt

SLOW2

SLEEP2 Halt

SLOW1

SLEEP1

STOP Stop Halt –

Oscillation

Stop

Low

Frequency

Stop

Oscillation

CPU Core TBT

Reset Reset Reset

Operate

HaltIDLE0

Operate with

high frequency

Operate with

low frequency

Operate

Operate with

low frequency

HaltSLEEP0

Other

Peripherals

Operate

Halt

Operate

Halt

Machine Cycle

Time

4/fc [s]

4/fs [s]

Page 16

System Control Register 1

SYSCR176543210

(0038H) STOP RELM RETM OUTEN WUT (Initial value: 0000 00**)

TMP86CH22UG

STOP STOP mode start

RELM

RETM

OUTEN Port output during STOP mode

WUT

Release method for STOP mode

Operating mode after STOP mode

Warm-up time at releasing STOP mode

0: CPU core and peripherals remain active 1: CPU core and peripherals are halted (Start STOP mode)

0: Edge-sensitive release 1: Level-sensitive release

0: Return to NORMAL1/2 mode 1: Return to SLOW1 mode

0: High impedance 1: Output kept

Return to NORMAL mode Return to SLOW mode

3 x 2

/fc

3 x 2

R/W

/fs

R/W

Note 1: Always set RETM to “0” when transiting from NORMAL mode to STOP mode. Always set RETM to “1” when transiting

from SLOW mode to STOP mode.

Note 2: When STOP mode is released with

RESET pin input, a return is made to NORMAL1 regardless of the RETM contents.

Note 3: fc: High-frequency clock [Hz], fs: Low-frequency clock [Hz], *; Don’t care Note 4: Bits 1 and 0 in SYSCR1 are read as undefined data when a read instruction is executed. Note 5: As the hardware becomes STOP mode under OUTEN = “0”, input value is fixed to “0”; therefore it may cause external

interrupt request on account of falling edge. Note 6: When the key-on wakeup is used, RELM should be set to "1". Note 7: Port P20 is used as

STOP pin. Therefore, when stop mode is started, OUTEN does not affect to P20, and P20 becomes

High-Z mode. Note 8: The warmig-up time should be set correctly for using oscillator.

System Control Register 2

SYSCR2

(0039H)

Note 1: A reset is applied if both XEN and XTEN are cleared to “0”, XEN is cleared to “0” when SYSCK = “0”, or XTEN is cleared

Note 2: *: Don’t care, TG: Timing generator, *; Don’t care Note 3: Bits 3, 1 and 0 in SYSCR2 are always read as undefined value. Note 4: Do not set IDLE and TGHALT to “1” simultaneously. Note 5: Because returning from IDLE0/SLEEP0 to NORMAL1/SLOW1 is executed by the asynchronous internal clock, the period

Note 6: When IDLE1/2 or SLEEP1/2 mode is released, IDLE is automatically cleared to “0”. Note 7: When IDLE0 or SLEEP0 mode is released, TGHALT is automatically cleared to “0”. Note 8: Before setting TGHALT to “1”, be sure to stop peripherals. If peripherals are not stopped, the interrupt latch of peripherals

76543210

XEN XTEN SYSCK IDLE

XEN High-frequency oscillator control

XTEN Low-frequency oscillator control

Main system clock select

SYSCK

IDLE

TGHALT

(Write)/main system clock monitor (Read)

CPU and watchdog timer control (IDLE1/2 and SLEEP1/2 modes)

TG control (IDLE0 and SLEEP0 modes)

TGHALT

0: Turn off oscillation 1: Turn on oscillation

0: High-frequency clock (NORMAL1/NORMAL2/IDLE1/IDLE2) 1: Low-frequency clock (SLOW1/SLOW2/SLEEP1/SLEEP2)

0: CPU and watchdog timer remain active 1: CPU and watchdog timer are stopped (Start IDLE1/2 and SLEEP1/2 modes)

0: Feeding clock to all peripherals from TG 1: Stop feeding clock to peripherals except TBT from TG. (Start IDLE0 and SLEEP0 modes)

(Initial value: 1000 *0**)

to “0” when SYSCK = “1”.

of IDLE0/SLEEP0 mode might be shorter than the period setting by TBTCR<TBTCK>.

may be set after IDLE0 or SLEEP0 mode is released.

R/W

Page 17

2. Operational Description

2.2 System Clock Controller

2.2.4 Operating Mode Control

2.2.4.1 STOP mode

TMP86CH22UG

STOP mode is controlled by the system control register 1, the STOP pin input and key-on wakeup input (STOP2) which is controlled by the STOP mode release control register (STOPCR). The

STOP pin is also used both as a port P20 and an INT5 (external interrupt input 5) pin. STOP mode is

started by setting SYSCR1<STOP> to “1”. During STOP mode, the following status is maintained.

1. Oscillations are turned off, and all internal operations are halted.

2. The data memory, registers, the program status word and port output latches are all held in the status in effect before STOP mode was entered.

3. The prescaler and the divider of the timing generator are cleared to “0”.

4. The program counter holds the address 2 ahead of the instruction (e.g., [SET (SYSCR1).7]) which started STOP mode.

STOP mode includes a level-sensitive mode and an edge-sensitive mode, either of which can be selected with the SYSCR1<RELM>. Do not use any key-on wakeup input (STOP2) for releasing STOP mode in edge-sensitive mode.

Note 1: The STOP mode can be released by either the STOP or key-on wakeup pin (STOP2). However,

because the STOP pin is different from the key-on wakeup and can not inhibit the release input, the STOP pin must be used for releasing STOP mode.

Note 2: During STOP period (from start of STOP mode to end of warm up), due to changes in the external

interrupt pin signal, interrupt latches may be set to “1” and interrupts may be accepted immediately after STOP mode is released. Before starting STOP mode, therefore, disable interrupts. Also, before enabling interrupts after STOP mode is released, clear unnecessary interrupt latches.

(1) Level-sensitive release mode (RELM = “1”)

In this mode, STOP mode is released by setting the

STOP pin high or setting the STOP2 pin input

which is enabled by STOPCR. This mode is used for capacitor backup when the main power supply is cut off and long term battery backup.

Even if an instruction for starting STOP mode is executed while input is low, STOP mode does not start but instead the warm-up sequence starts immediately. Thus, to start STOP mode in the level-sensitive release mode, it is necessary for the program to first confirm that the

STOP pin input is low or STOP2 input is high. The following two methods can be used

for confirmation.

1. Testing a port.

2. Using an external interrupt input

INT5 (INT5 is a falling edge-sensitive input).

Example 1 :Starting STOP mode from NORMAL mode by testing a port P20.

STOP pin input is high or STOP2

LD (SYSCR1), 01010000B ; Sets up the level-sensitive release mode

SSTOPH: TEST (P2PRD). 0 ; Wait until the

JRS F, SSTOPH

DI ; IMF ← 0

SET (SYSCR1). 7 ; Starts STOP mode

Page 18

STOP pin input goes low level

Example 2 :Starting STOP mode from NORMAL mode with an INT5 interrupt.

PINT5: TEST (P2PRD). 0 ; To reject noise, STOP mode does not start if

JRS F, SINT5 port P20 is at high

LD (SYSCR1), 01010000B ; Sets up the level-sensitive release mode.

DI ; IMF ← 0

SET (SYSCR1). 7 ; Starts STOP mode

SINT5: RETI

STOP pin

XOUT pin

TMP86CH22UG

NORMAL

operation

Confirm by program that the STOP pin input is low and start STOP mode.

STOP

operation

Figure 2-7 Level-sensitive Release Mode

Note 1: Even if the STOP pin input is low after warm-up start, the STOP mode is not restarted.

Note 2: In this case of changing to the level-sensitive mode from the edge-sensitive mode, the release

mode is not switched until a rising edge of the

(2) Edge-sensitive release mode (RELM = “0”)

In this mode, STOP mode is released by a rising edge of the cations where a relatively short program is executed repeatedly at periodic intervals. This periodic signal (for example, a clock from a low-power consumption oscillator) is input to the the edge-sensitive release mode, STOP mode is started even when the Do not use any STOP2 pin input for releasing STOP mode in edge-sensitive release mode.

Example :Starting STOP mode from NORMAL mode

Warm up

STOP mode is released by the hardware.

Always released if the STOP pin input is high.

STOP pin input is detected.

NORMAL operation

STOP pin input. This is used in appli-

STOP pin input is high level.

STOP pin. In

STOP pin

XOUT pin

STOP mode started by the program.

DI ; IMF ← 0

LD (SYSCR1), 10010000B ; Starts after specified to the edge-sensitive release mode

NORMAL operation

STOP

operation

Warm up

STOP mode is released by the hardware at the rising edge of STOP pin input.

NORMAL

operation

Figure 2-8 Edge-sensitive Release Mode

Page 19

STOP

operation

2. Operational Description

2.2 System Clock Controller TMP86CH22UG

STOP mode is released by the following sequence.

1. In the dual-clock mode, when returning to NORMAL2, both the high-frequency and lowfrequency clock oscillators are turned on; when returning to SLOW1 mode, only the lowfrequency clock oscillator is turned on. In the single-clock mode, only the high-frequency clock oscillator is turned on.

2. A warm-up period is inserted to allow oscillation time to stabilize. During warm up, all internal operations remain halted. Four different warm-up times can be selected with the SYSCR1<WUT> in accordance with the resonator characteristics.

3. When the warm-up time has elapsed, normal operation resumes with the instruction following the STOP mode start instruction.

Note 1: When the STOP mode is released, the start is made after the prescaler and the divider of the

timing generator are cleared to "0".

Note 2: STOP mode can also be released by inputting low level on the

performs the normal reset operation.

Note 3: When STOP mode is released with a low hold voltage, the following cautions must be observed.

The power supply voltage must be at the operating voltage level before releasing STOP mode. The

RESET pin input must also be “H” level, rising together with the power supply voltage. In this

case, if an external time constant circuit has been connected, the increase at a slower pace than the power supply voltage. At this time, there is a danger that a reset may occur if input voltage level of the input voltage (Hysteresis input).

RESET pin drops below the non-inverting high-level

RESET pin, which immediately

RESET pin input voltage will

Table 2-2 Warm-up Time Example (at fc = 16.0 MHz, fs = 32.768 kHz)

WUT

00 01 10 11

Note 1: The warm-up time is obtained by dividing the basic clock by the divider. Therefore, the warm-up

time may include a certain amount of error if there is any fluctuation of the oscillation frequency when STOP mode is released. Thus, the warm-up time must be considered as an approximate value.

Return to NORMAL Mode Return to SLOW Mode

12.288

4.096

3.072

1.024

Warm-up Time [ms]

750 250

5.85

1.95

Page 20

Turn off

TMP86CH22UG

a + 3

Halt

n + 2 n + 3 n + 4

a + 6

Instruction address a + 4

a + 5

Instruction address a + 3

a + 4

Instruction address a + 2

(b) STOP mode release

Turn on

Oscillator

circuit

Main

system

clock

a + 2

Program

counter

Instruction

SET (SYSCR1). 7

(a) STOP mode start (Example: Start with SET (SYSCR1). 7 instruction located at address a)

n + 1

Warm up

Turn on

Turn off

execution

Divider

STOP pin

input

Oscillator

circuit

Main

Figure 2-9 STOP Mode Start/Release

system

clock

a + 3

Halt

Program

counter

Count up

Instruction

execution

Divider

Page 21

2. Operational Description

2.2 System Clock Controller

2.2.4.2 IDLE1/2 mode and SLEEP1/2 mode

TMP86CH22UG

IDLE1/2 and SLEEP1/2 modes are controlled by the system control register 2 (SYSCR2) and maskable

interrupts. The following status is maintained during these modes.

1. Operation of the CPU and watchdog timer (WDT) is halted. On-chip peripherals continue to operate.

2. The data memory, CPU registers, program status word and port output latches are all held in the status in effect before these modes were entered.

3. The program counter holds the address 2 ahead of the instruction which starts these modes.

Starting IDLE1/2 and SLEEP1/2 modes by

instruction

CPU and WDT are halted

Normal

release mode

Reset input

Interrupt request

Yes

“0”

Execution of the instruc-

tion which follows the

IDLE1/2 and SLEEP1/2

modes start instruction

IMF

Interrupt processing

Yes

“1” (Interrupt release mode)

Reset

Figure 2-10 IDLE1/2 and SLEEP1/2 Modes

Page 22

TMP86CH22UG

• Start the IDLE1/2 and SLEEP1/2 modes

After IMF is set to "0", set the individual interrupt enable flag (EF) which releases IDLE1/2

and SLEEP1/2 modes. To start IDLE1/2 and SLEEP1/2 modes, set SYSCR2<IDLE> to “1”.

• Release the IDLE1/2 and SLEEP1/2 modes

IDLE1/2 and SLEEP1/2 modes include a normal release mode and an interrupt release mode. These modes are selected by interrupt master enable flag (IMF). After releasing IDLE1/2 and SLEEP1/2 modes, the SYSCR2<IDLE> is automatically cleared to “0” and the operation mode

is returned to the mode preceding IDLE1/2 and SLEEP1/2 modes.

IDLE1/2 and SLEEP1/2 modes can also be released by inputting low level on the

RESET pin.

After releasing reset, the operation mode is started from NORMAL1 mode.

(1) Normal release mode (IMF = “0”)

IDLE1/2 and SLEEP1/2 modes are released by any interrupt source enabled by the individual interrupt enable flag (EF). After the interrupt is generated, the program operation is resumed from the instruction following the IDLE1/2 and SLEEP1/2 modes start instruction. Normally, the interrupt latches (IL) of the interrupt source used for releasing must be cleared to “0” by load instructions.

(2) Interrupt release mode (IMF = “1”)

IDLE1/2 and SLEEP1/2 modes are released by any interrupt source enabled with the individual interrupt enable flag (EF) and the interrupt processing is started. After the interrupt is processed, the program operation is resumed from the instruction following the instruction, which starts IDLE1/2 and SLEEP1/2 modes.

Note: When a watchdog timer interrupts is generated immediately before IDLE1/2 and SLEEP1/2

modes are started, the watchdog timer interrupt will be processed but IDLE1/2 and SLEEP1/2 modes will not be started.

Page 23

2. Operational Description

2.2 System Clock Controller TMP86CH22UG

Halt

a + 3

a + 2

Operate

SET (SYSCR2). 4

(a) IDLE1/2 and SLEEP1/2 modes start (Example: Starting with the SET instruction located at address a)

a + 4 a + 3

Instruction address a + 2

Operate

Halt

㽲㩷Normal release mode

Acceptance of interrupt

a + 3

Halt

Operate Operate

(b) IDLE1/2 and SLEEP1/2 modes release

㽳㩷Interrupt release mode

Main

system

clock

Interrupt

request

Program

counter

Instruction

execution

Watchdog

timer

Main

system

clock

Interrupt

request

Program

counter

Instruction

execution

Watchdog

timer

Main

system

clock

Interrupt

request

Program

counter

Figure 2-11 IDLE1/2 and SLEEP1/2 Modes Start/Release

Page 24

Instruction

execution

Watchdog

timer

2.2.4.3 IDLE0 and SLEEP0 modes (IDLE0, SLEEP0)

IDLE0 and SLEEP0 modes are controlled by the system control register 2 (SYSCR2) and the time base

timer control register (TBTCR). The following status is maintained during IDLE0 and SLEEP0 modes.

1. Timing generator stops feeding clock to peripherals except TBT.

2. The data memory, CPU registers, program status word and port output latches are all held in the status in effect before IDLE0 and SLEEP0 modes were entered.

3. The program counter holds the address 2 ahead of the instruction which starts IDLE0 and SLEEP0 modes.

Note: Before starting IDLE0 or SLEEP0 mode, be sure to stop (Disable) peripherals.

Stopping peripherals

by instruction

Starting IDLE0, SLEEP0

modes by instruction

TMP86CH22UG

(Normal release mode)

CPU and WDT are halted

Reset input

TBT

source clock

falling

edge

Yes

TBTCR<TBTEN>

= "1"

Yes

TBT interrupt

enable

Yes

IMF = "1"

Yes (Interrupt release mode)

Interrupt processing

Yes

Reset

Execution of the instruction

which follows the IDLE0,

SLEEP0 modes start

instruction

Figure 2-12 IDLE0 and SLEEP0 Modes

Page 25

2. Operational Description

2.2 System Clock Controller TMP86CH22UG

• Start the IDLE0 and SLEEP0 modes

Stop (Disable) peripherals such as a timer counter.

To start IDLE0 and SLEEP0 modes, set SYSCR2<TGHALT> to “1”.

• Release the IDLE0 and SLEEP0 modes

IDLE0 and SLEEP0 modes include a normal release mode and an interrupt release mode.

These modes are selected by interrupt master flag (IMF), the individual interrupt enable flag

of TBT and TBTCR<TBTEN>.

After releasing IDLE0 and SLEEP0 modes, the SYSCR2<TGHALT> is automatically cleared to “0” and the operation mode is returned to the mode preceding IDLE0 and SLEEP0 modes. Before starting the IDLE0 or SLEEP0 mode, when the TBTCR<TBTEN> is set to “1”,

INTTBT interrupt latch is set to “1”.

IDLE0 and SLEEP0 modes can also be released by inputting low level on the

RESET pin.

After releasing reset, the operation mode is started from NORMAL1 mode.

Note: IDLE0 and SLEEP0 modes start/release without reference to TBTCR<TBTEN> setting.

(1) Normal release mode (IMF•EF6•TBTCR<TBTEN> = “0”)

IDLE0 and SLEEP0 modes are released by the source clock falling edge, which is setting by the TBTCR<TBTCK>. After the falling edge is detected, the program operation is resumed from the instruction following the IDLE0 and SLEEP0 modes start instruction. Before starting the IDLE0 or SLEEP0 mode, when the TBTCR<TBTEN> is set to “1”, INTTBT interrupt latch is set to “1”.

(2) Interrupt release mode (IMF•EF6•TBTCR<TBTEN> = “1”)

IDLE0 and SLEEP0 modes are released by the source clock falling edge, which is setting by the TBTCR<TBTCK> and INTTBT interrupt processing is started.

Note 1: Because returning from IDLE0, SLEEP0 to NORMAL1, SLOW1 is executed by the asynchro-

nous internal clock, the period of IDLE0, SLEEP0 mode might be the shorter than the period setting by TBTCR<TBTCK>.

Note 2: When a watchdog timer interrupt is generated immediately before IDLE0/SLEEP0 mode is

started, the watchdog timer interrupt will be processed but IDLE0/SLEEP0 mode will not be started.

Page 26

a + 3

TMP86CH22UG

Halt

a + 2

SET (SYSCR2). 2

Operate

(a) IDLE0 and SLEEP0 modes start (Example: Starting with the SET instruction located at address a

a + 4 a + 3

Instruction address a + 2

Operate

Halt

㽲㩷Normal release mode

Acceptance of interrupt

a + 3

Halt

Operate

㽳㩷Interrupt release mode

(b) IDLE and SLEEP0 modes release

system

clock

Interrupt

request

Program

counter

Instruction

execution

Watchdog

timer

Main

system

clock

TBT clock

Program

counter

Instruction

execution

Watchdog

timer

Figure 2-13 IDLE0 and SLEEP0 Modes Start/Release

Page 27

Main

system

clock

TBT clock

Program

counter

Instruction

execution

Watchdog

timer

2. Operational Description

2.2 System Clock Controller

2.2.4.4 SLOW mode

Example 1 :Switching from NORMAL2 mode to SLOW1 mode.

TMP86CH22UG

SLOW mode is controlled by the system control register 2 (SYSCR2).

The following is the methods to switch the mode with the warm-up counter.

(1) Switching from NORMAL2 mode to SLOW1 mode

First, set SYSCR2<SYSCK> to switch the main system clock to the low-frequency clock for SLOW2 mode. Next, clear SYSCR2<XEN> to turn off high-frequency oscillation.

Note: The high-frequency clock can be continued oscillation in order to return to NORMAL2 mode from

SLOW mode quickly. Always turn off oscillation of high-frequency clock when switching from SLOW mode to stop mode.

SET (SYSCR2). 5

CLR (SYSCR2). 7

; SYSCR2<SYSCK>

(Switches the main system clock to the low-frequency clock for SLOW2)

; SYSCR2<XEN>

(Turns off high-frequency oscillation)

← 1

← 0

Example 2 :Switching to the SLOW1 mode after low-frequency clock has stabilized.

SET (SYSCR2). 6

LD (TC5CR), 43H ; Sets mode for TC6, 5 (16-bit mode, fs for source)

LD (TC6CR), 05H ; Sets warming-up counter mode

LDW (TTREG5), 8000H ; Sets warm-up time (Depend on oscillator accompanied)

SET (EIRH). 5 ; Enables INTTC6

SET (TC6CR). 3 ; Starts TC6, 5

PINTTC6: CLR (TC6CR). 3 ; Stops TC6, 5

; SYSCR2<XTEN>

← 0

; IMF

← 1

; IMF

← 1

SET (SYSCR2). 5

CLR (SYSCR2). 7

RETI

VINTTC6: DW PINTTC6 ; INTTC6 vector table

; SYSCR2<SYSCK>

(Switches the main system clock to the low-frequency clock)

; SYSCR2<XEN>

(Turns off high-frequency oscillation)

← 0

Page 28

← 1

TMP86CH22UG

(2) Switching from SLOW1 mode to NORMAL2 mode

First, set SYSCR2<XEN> to turn on the high-frequency oscillation. When time for stabilization

(Warm up) has been taken by the timer/counter (TC

6,TC5), clear SYSCR2<SYSCK> to switch the

main system clock to the high-frequency clock.

SLOW mode can also be released by inputting low level on the

RESET pin. After releasing reset, the

operation mode is started from NORMAL1 mode.

Note: After SYSCK is cleared to “0”, executing the instructions is continiued by the low-frequency clock

for the period synchronized with low-frequency and high-frequency clocks.

High-frequency clock Low-frequency clock

Main system clock SYSCK

Example :Switching from the SLOW1 mode to the NORMAL2 mode (fc = 16 MHz, warm-up time is 4.0 ms).

SET (SYSCR2). 7

LD (TC5CR), 63H ; Sets mode for TC6, 5 (16-bit mode, fc for source)

LD (TC6CR), 05H ; Sets warming-up counter mode

LD (TTREG6), 0F8H ; Sets warm-up time

SET (EIRH). 5 ; Enables INTTC6

SET (TC6CR). 3 ; Starts TC6, 5

PINTTC6: CLR (TC6CR). 3 ; Stops TC6, 5

CLR (SYSCR2). 5

RETI

VINTTC6: DW PINTTC6 ; INTTC6 vector table

; SYSCR2<XEN>

← 0

; IMF

← 1

; IMF

; SYSCR2<SYSCK>

(Switches the main system clock to the high-frequency clock)

← 1 (Starts high-frequency oscillation)

← 0

Page 29

2. Operational Description

2.2 System Clock Controller

Turn off

SLOW1 mode

TMP86CH22UG

NORMAL2

mode

CLR (SYSCR2). 7

SLOW2 mode

(a) Switching to the SLOW mode

SET (SYSCR2). 5

CLR (SYSCR2). 5

Warm up during SLOW2 mode

(b) Switching to the NORMAL2 mode

NORMAL2

mode

High-

frequency

clock

Low-

frequency

clock

Main

system

clock

SYSCK

XEN

Instruction

execution

High-

frequency

clock

Low-

frequency

clock

Main

system

clock

SYSCK

Figure 2-14 Switching between the NORMAL2 and SLOW Modes

Page 30

XEN

Instruction

SET (SYSCR2). 7

SLOW1 mode

execution

TMP86CH22UG

2.3 Reset Circuit

The TMP86CH22UG has four types of reset generation procedures: An external reset input, an address trap reset, a watchdog timer reset and a system clock reset. Of these reset, the address trap reset, the watchdog timer and the system clock reset are a malfunction reset. When the malfunction reset request is detected, reset occurs during the maximum 24/fc[s].

The malfunction reset circuit such as watchdog timer reset, address trap reset and system clock reset is not initialized when power is turned on. Therefore, reset may occur during maximum 24/fc[s] (1.5µs at 16.0 MHz) when power is turned on.

Table 2-3 shows on-chip hardware initialization by reset action.

Table 2-3 Initializing Internal Status by Reset Action

On-chip Hardware Initial Value On-chip Hardware Initial Value

Program counter (PC) (FFFEH)

Stack pointer (SP) Not initialized

General-purpose registers (W, A, B, C, D, E, H, L, IX, IY)

Jump status flag (JF) Not initialized Watchdog timer Enable

Zero flag (ZF) Not initialized

Carry flag (CF) Not initialized

Half carry flag (HF) Not initialized

Sign flag (SF) Not initialized

Overflow flag (VF) Not initialized

Interrupt master enable flag (IMF) 0

Interrupt individual enable flags (EF) 0

Interrupt latches (IL) 0

Not initialized

Prescaler and divider of timing generator 0

Output latches of I/O ports Refer to I/O port circuitry

Control registers

LCD data buffer Not initialized

RAM Not initialized

Refer to each of control register

2.3.1 External Reset Input

The RESET pin contains a Schmitt trigger (Hysteresis) with an internal pull-up resistor.

When the age within the operating voltage range and oscillation stable, a reset is applied and the internal state is initialized.

When the vector address stored at addresses FFFEH to FFFFH.

RESET

RESET pin is held at “L” level for at least 3 machine cycles (12/fc [s]) with the power supply volt-

RESET pin input goes high, the reset operation is released and the program execution starts at the

VDD

Internal reset

Malfunction

reset output

circuit

Figure 2-15 Reset Circuit

Watchdog timer reset

Address trap reset

System clock reset

Page 31

2. Operational Description

2.3 Reset Circuit

2.3.2 Address trap reset

If the CPU should start looping for some cause such as noise and an attempt be made to fetch an instruction from the on-chip RAM (when WDTCR1<ATAS> is set to “1”), DBR or the SFR area, address trap reset will be generated. The reset time is maximum 24/fc[s] (1.5µs at 16.0 MHz).

Note:The operating mode under address trapped is alternative of reset or interrupt. The address trap area is alter-

Instruction execution

Internal reset

native.

JP a

Address trap is occurred

Reset release

TMP86CH22UG

Instruction at address r

4/fc to 12/fc [s]

Note 1: Address “a” is in the SFR, DBR or on-chip RAM (WDTCR1<ATAS> = “1”) space. Note 2: During reset release, reset vector “r” is read out, and an instruction at address “r” is fetched and decoded.

16/fc [s] maximum 24/fc [s]

Figure 2-16 Address Trap Reset

2.3.3 Watchdog timer reset

Refer to Section “Watchdog Timer”.

2.3.4 System clock reset

If the condition as follows is detected, the system clock reset occurs automatically to prevent dead lock of the CPU. (The oscillation is continued without stopping.)

- In case of clearing SYSCR2<XEN> and SYSCR2<XTEN> simultaneously to “0”.

- In case of clearing SYSCR2<XEN> to “0”, when the SYSCR2<SYSCK> is “0”.

- In case of clearing SYSCR2<XTEN> to “0”, when the SYSCR2<SYSCK> is “1”.

The reset time is maximum 24/fc (1.5 µs at 16.0 MHz).

Page 32

TMP86CH22UG

Page 33

2. Operational Description

2.3 Reset Circuit TMP86CH22UG

Page 34

TMP86CH22UG

3. Interrupt Control Circuit

The TMP86CH22UG has a total of 18 interrupt sources excluding reset. Interrupts can be nested with priorities.

Four of the internal interrupt sources are non-maskable while the rest are maskable.

Interrupt sources are provided with interrupt latches (IL), which hold interrupt requests, and independent vectors. The interrupt latch is set to “1” by the generation of its interrupt request which requests the CPU to accept its interrupts. Interrupts are enabled or disabled by software using the interrupt master enable flag (IMF) and interrupt enable flag (EF). If more than one interrupts are generated simultaneously, interrupts are accepted in order which is dominated by hardware. However, there are no prioritized interrupt factors among non-maskable interrupts.

Interrupt Factors Enable Condition

Internal/External (Reset) Non-maskable – FFFE 1

Internal INTSWI (Software interrupt) Non-maskable – FFFC 2

Internal

Internal INTATRAP (Address trap interrupt) Non-maskable IL2 FFFA 2

Internal INTWDT (Watchdog timer interrupt) Non-maskable IL3 FFF8 2

External

External INT1 IMF• EF5 = 1 IL5 FFF4 6

Internal INTTBT IMF• EF6 = 1 IL6 FFF2 7

Internal INTTC1 IMF• EF7 = 1 IL7 FFF0 8

Internal INTSIO IMF• EF8 = 1 IL8 FFEE 9

External INT2 IMF• EF9 = 1 IL9 FFEC 10

Internal INTRXD IMF• EF10 = 1 IL10 FFEA 11

Internal INTTXD IMF• EF11 = 1 IL11 FFE8 12

- Reserved IMF• EF12 = 1 IL12 FFE6 13

Internal INTTC6 IMF• EF13 = 1 IL13 FFE4 14

Internal INTRTC IMF• EF14 = 1 IL14 FFE2 15

Internal INTADC IMF• EF15 = 1 IL15 FFE0 16

- Reserved IMF• EF16 = 1 IL16 FFBE 17

External INT3 IMF• EF17 = 1 IL17 FFBC 18

Internal INTTC5 IMF• EF18 = 1 IL18 FFBA 19

External

- Reserved IMF• EF20 = 1 IL20 FFB6 21

- Reserved IMF• EF21 = 1 IL21 FFB4 22

- Reserved IMF• EF22 = 1 IL22 FFB2 23

- Reserved IMF• EF23 = 1 IL23 FFB0 24

INTUNDEF (Executed the undefined instruction interrupt)

INT0 IMF• EF4 = 1, INT0EN = 1 IL4 FFF6 5

INT5 IMF• EF19 = 1 IL19 FFB8 20

Non-maskable – FFFC 2

Interrupt

Latch

Vector

Address

Priority

Note 1: To use the address trap interrupt (INTATRAP), clear WDTCR1<ATOUT> to “0” (It is set for the “reset request” after reset is

cancelled). For details, see “Address Trap”.

Note 2: To use the watchdog timer interrupt (INTWDT), clear WDTCR1<WDTOUT> to "0" (It is set for the "Reset request" after

reset is released). For details, see "Watchdog Timer".

Note 3: If an INTADC interrupt request is generated while an interrupt with priority lower than the interrupt latch IL15 (INTADC) is

being accepted, the INTADC interrupt latch may be cleared without the INTADC interrupt being processed. For details, refer to the corresponding notes in the chapter on the AD converter.

3.1 Interrupt latches (IL19 to IL2)

An interrupt latch is provided for each interrupt source, except for a software interrupt and an executed the undefined instruction interrupt. When interrupt request is generated, the latch is set to “1”, and the CPU is requested to accept the interrupt if its interrupt is enabled. The interrupt latch is cleared to "0" immediately after accepting interrupt. All interrupt latches are initialized to “0” during reset.

Page 35

3. Interrupt Control Circuit

3.2 Interrupt enable register (EIR)

The interrupt latches are located on address 002EH, 003CH and 003DH in SFR area. Each latch can be cleared to "0" individually by instruction. However, IL2 and IL3 should not be cleared to "0" by software. For clearing the interrupt latch, load instruction should be used and then IL2 and IL3 should be set to "1". If the read-modify-write instructions such as bit manipulation or operation instructions are used, interrupt request would be cleared inadequately if interrupt is requested while such instructions are executed.

Interrupt latches are not set to “1” by an instruction.

Since interrupt latches can be read, the status for interrupt requests can be monitored by software.

Note: In main program, before manipulating the interrupt enable flag (EF) or the interrupt latch (IL), be sure to clear IMF to

"0" (Disable interrupt by DI instruction). Then set IMF newly again as required after operating on the EF or IL (Enable interrupt by EI instruction) In interrupt service routine, because the IMF becomes "0" automatically, clearing IMF need not execute normally on interrupt service routine. However, if using multiple interrupt on interrupt service routine, manipulating EF or IL should be executed before setting IMF="1".

Example 1 :Clears interrupt latches

TMP86CH22UG

LDW (ILL), 1110100000111111B

← 0

; IMF

; IL12, IL10 to IL6

; IMF

← 1

← 0

Example 2 :Reads interrupt latchess

LD WA, (ILL)

← ILH, A ← ILL

; W

Example 3 :Tests interrupt latches

TEST (ILL). 7 ; if IL7 = 1 then jump

JR F, SSET

3.2 Interrupt enable register (EIR)

The interrupt enable register (EIR) enables and disables the acceptance of interrupts, except for the non-maskable interrupts (Software interrupt, undefined instruction interrupt, address trap interrupt and watchdog interrupt). Nonmaskable interrupt is accepted regardless of the contents of the EIR.

The EIR consists of an interrupt master enable flag (IMF) and the individual interrupt enable flags (EF). These registers are located on address 002CH, 003AH and 003BH in SFR area, and they can be read and written by an instructions (Including read-modify-write instructions such as bit manipulation or operation instructions).

3.2.1 Interrupt master enable flag (IMF)

The interrupt enable register (IMF) enables and disables the acceptance of the whole maskable interrupt. While IMF = “0”, all maskable interrupts are not accepted regardless of the status on each individual interrupt enable flag (EF). By setting IMF to “1”, the interrupt becomes acceptable if the individuals are enabled. When an interrupt is accepted, IMF is cleared to “0” after the latest status on IMF is stacked. Thus the maskable interrupts which follow are disabled. By executing return interrupt instruction [RETI/RETN], the stacked data, which was the status before interrupt acceptance, is loaded on IMF again.

The IMF is located on bit0 in EIRL (Address: 003AH in SFR), and can be read and written by an instruction. The IMF is normally set and cleared by [EI] and [DI] instruction respectively. During reset, the IMF is initialized to “0”.

Page 36

3.2.2 Individual interrupt enable flags (EF19 to EF4)

Each of these flags enables and disables the acceptance of its maskable interrupt. Setting the corresponding bit of an individual interrupt enable flag to “1” enables acceptance of its interrupt, and setting the bit to “0” disables acceptance. During reset, all the individual interrupt enable flags (EF19 to EF4) are initialized to “0” and all maskable interrupts are not accepted until they are set to “1”.

Note:In main program, before manipulating the interrupt enable flag (EF) or the interrupt latch (IL), be sure to clear

IMF to "0" (Disable interrupt by DI instruction). Then set IMF newly again as required after operating on the EF or IL (Enable interrupt by EI instruction) In interrupt service routine, because the IMF becomes "0" automatically, clearing IMF need not execute normally on interrupt service routine. However, if using multiple interrupt on interrupt service routine, manipulating EF or IL should be executed before setting IMF="1".

Example 1 :Enables interrupts individually and sets IMF

TMP86CH22UG

LDW :

Example 2 :C compiler description example

unsigned int _io (3AH) EIRL; /* 3AH shows EIRL address */

_DI();

EIRL = 10100000B;

_EI();

(EIRL), 1110100010100000B

← 0

; IMF

; EF15 to EF13, EF11, EF7, EF5

Note: IMF should not be set.

← 1

; IMF

← 1

Page 37

3. Interrupt Control Circuit

3.2 Interrupt enable register (EIR)

Interrupt Latches

ILH,ILL

(003DH, 003CH)

ILE

(002EH)

IL15 IL14 IL13 IL12 IL11 IL10 IL9 IL8 IL7 IL6 IL5 IL4 IL3 IL2

TMP86CH22UG

(Initial value: 00000000 000000**)

1514131211109876543210

ILH (003DH) ILL (003CH)

(Initial value: ****0000)

76543210

−−−−IL19 IL18 IL17 IL16

ILE (002EH)

IL19 to IL2 Interrupt latches

at RD 0: No interrupt request

1: Interrupt request

at WR 0: Clears the interrupt request 1: (Interrupt latch is not set.)

Note 1: To clear any one of bits IL7 to IL4, be sure to write "1" into IL2 and IL3. Note 2: In main program, before manipulating the interrupt enable flag (EF) or the interrupt latch (IL), be sure to clear IMF to "0"

(Disable interrupt by DI instruction). Then set IMF newly again as required after operating on the EF or IL (Enable interrupt by EI instruction) In interrupt service routine, because the IMF becomes "0" automatically, clearing IMF need not execute normally on interrupt service routine. However, if using multiple interrupt on interrupt service routine, manipulating EF or IL should be executed before setting IMF="1".

Note 3: Do not clear IL with read-modify-write instructions such as bit operations.

Interrupt Enable Registers

(Initial value: 00000000 0000***0)

EIRH,EIRL

(003BH, 003AH)

EIRE

(002CH)

1514131211109876543210

EF15 EF14 EF13 EF12 EF11 EF10 EF9 EF8 EF7 EF6 EF5 EF4 IMF

EIRH (003BH) EIRL (003AH)

(Initial value: ****0000)

76543210

−−−−EF19 EF18 EF17 EF16

EIRE (002CH)

R/W

EF19 to EF4

IMF Interrupt master enable flag

Individual-interrupt enable flag (Specified for each bit)

0:1:Disables the acceptance of each maskable interrupt.

Enables the acceptance of each maskable interrupt.

0:1:Disables the acceptance of all maskable interrupts

Enables the acceptance of all maskable interrupts

R/W

Note 1: *: Don’t care Note 2: Do not set IMF and the interrupt enable flag (EF15 to EF4) to “1” at the same time. Note 3: In main program, before manipulating the interrupt enable flag (EF) or the interrupt latch (IL), be sure to clear IMF to "0"

Page 38

TMP86CH22UG

3.3 Interrupt Sequence

An interrupt request, which raised interrupt latch, is held, until interrupt is accepted or interrupt latch is cleared to “0” by resetting or an instruction. Interrupt acceptance sequence requires 8 machine cycles (2 µs @16 MHz) after the completion of the current instruction. The interrupt service task terminates upon execution of an interrupt return instruction [RETI] (for maskable interrupts) or [RETN] (for non-maskable interrupts). Figure 3-1 shows the timing chart of interrupt acceptance processing.

3.3.1 Interrupt acceptance processing is packaged as follows.

a. The interrupt master enable flag (IMF) is cleared to “0” in order to disable the acceptance of any fol-

lowing interrupt.

b. The interrupt latch (IL) for the interrupt source accepted is cleared to “0”.

c. The contents of the program counter (PC) and the program status word, including the interrupt master

enable flag (IMF), are saved (Pushed) on the stack in sequence of PSW + IMF, PCH, PCL. Meanwhile, the stack pointer (SP) is decremented by 3.

d. The entry address (Interrupt vector) of the corresponding interrupt service program, loaded on the vec-

tor table, is transferred to the program counter.

e. The instruction stored at the entry address of the interrupt service program is executed.

Note:When the contents of PSW are saved on the stack, the contents of IMF are also saved.

Interrupt service task

c + 1

Execute RETI instruction

c + 2

Interrupt request

Interrupt latch (IL)

IMF

Execute instruction

1-machine cycle

instruction

a − 1

Execute

Interrupt acceptance

b + 1

a + 1a

n − 2 n - 3 n − 2n − 1n − 1n

Execute

instruction

b + 2

b + 3

Note 1: a: Return address entry address, b: Entry address, c: Address which RETI instruction is stored

Note 2: On condition that interrupt is enabled, it takes 38/fc [s] or 38/fs [s] at maximum (If the interrupt latch is set at the first

machine cycle on 10 cycle instruction) to start interrupt acceptance processing since its interrupt latch is set.

Figure 3-1 Timing Chart of Interrupt Acceptance/Return Interrupt Instruction

a + 2a + 1

Example: Correspondence between vector table address for INTTBT and the entry address of the interrupt

service program

Vector table address Entry address

FFF2H

FFF3H

03H D203H

D2H

Vector

D204H 06H

0FH

Interrupt service program

Figure 3-2 Vector table address,Entry address

Page 39

3. Interrupt Control Circuit

3.3 Interrupt Sequence

A maskable interrupt is not accepted until the IMF is set to “1” even if the maskable interrupt higher than the

level of current servicing interrupt is requested.

In order to utilize nested interrupt service, the IMF is set to “1” in the interrupt service program. In this case,

acceptable interrupt sources are selectively enabled by the individual interrupt enable flags.

To avoid overloaded nesting, clear the individual interrupt enable flag whose interrupt is currently serviced, before setting IMF to “1”. As for non-maskable interrupt, keep interrupt service shorten compared with length between interrupt requests; otherwise the status cannot be recovered as non-maskable interrupt would simply nested.

3.3.2 Saving/restoring general-purpose registers

During interrupt acceptance processing, the program counter (PC) and the program status word (PSW, includes IMF) are automatically saved on the stack, but the accumulator and others are not. These registers are saved by software if necessary. When multiple interrupt services are nested, it is also necessary to avoid using the same data memory area for saving registers. The following methods are used to save/restore the generalpurpose registers.

TMP86CH22UG

3.3.2.1 Using PUSH and POP instructions

If only a specific register is saved or interrupts of the same source are nested, general-purpose registers

can be saved/restored using the PUSH/POP instructions.

Example :Save/store register using PUSH and POP instructions

PINTxx: PUSH WA ; Save WA register

(interrupt processing)

POP WA ; Restore WA register

RETI ; RETURN

PCL PCH

PSW

PCL PCH PSW

PCL PCH

PSW

Address (Example)

b-5 b-4 b-3 b-2 b-1 b

At acceptance of an interrupt

At execution of PUSH instruction

Figure 3-3 Save/store register using PUSH and POP instructions

3.3.2.2 Using data transfer instructions

To save only a specific register without nested interrupts, data transfer instructions are available.

Page 40

At execution of POP instruction

At execution of RETI instruction

Example :Save/store register using data transfer instructions

PINTxx: LD (GSAVA), A ; Save A register

(interrupt processing)

LD A, (GSAVA) ; Restore A register

RETI ; RETURN

Main task

Interrupt acceptance

TMP86CH22UG

Interrupt service task

Saving registers

Restoring registers

Interrupt return

Saving/Restoring general-purpose registers using PUSH/POP data transfer instruction

Figure 3-4 Saving/Restoring General-purpose Registers under Interrupt Processing

3.3.3 Interrupt return

Interrupt return instructions [RETI]/[RETN] perform as follows.

[RETI]/[RETN] Interrupt Return

1. Program counter (PC) and program status word (PSW, includes IMF) are restored from the stack.

2. Stack pointer (SP) is incremented by 3.

As for address trap interrupt (INTATRAP), it is required to alter stacked data for program counter (PC) to

restarting address, during interrupt service program.

Note:If [RETN] is executed with the above data unaltered, the program returns to the address trap area and

INTATRAP occurs again.When interrupt acceptance processing has completed, stacked data for PCL and PCH are located on address (SP + 1) and (SP + 2) respectively.

Example 1 :Returning from address trap interrupt (INTATRAP) service program

PINTxx: POP WA ; Recover SP by 2

LD WA, Return Address ;

PUSH WA ; Alter stacked data

(interrupt processing)

RETN ; RETURN

Page 41

3. Interrupt Control Circuit

3.4 Software Interrupt (INTSW)

Example 2 :Restarting without returning interrupt

(In this case, PSW (Includes IMF) before interrupt acceptance is discarded.)

PINTxx: INC SP ; Recover SP by 3

Interrupt requests are sampled during the final cycle of the instruction being executed. Thus, the next inter-

rupt can be accepted immediately after the interrupt return instruction is executed.

Note 1: It is recommended that stack pointer be return to rate before INTATRAP (Increment 3 times), if return inter-

Note 2: When the interrupt processing time is longer than the interrupt request generation time, the interrupt service

TMP86CH22UG

INC SP ;

(interrupt processing)

LD EIRL, data ; Set IMF to “1” or clear it to “0”

JP Restart Address ; Jump into restarting address

rupt instruction [RETN] is not utilized during interrupt service program under INTATRAP (such as Example

2).

task is performed but not the main task.

3.4 Software Interrupt (INTSW)

Executing the SWI instruction generates a software interrupt and immediately starts interrupt processing (INTSW

is highest prioritized interrupt).

Use the SWI instruction only for detection of the address error or for debugging.

3.4.1 Address error detection

FFH is read if for some cause such as noise the CPU attempts to fetch an instruction from a non-existent memory address during single chip mode. Code FFH is the SWI instruction, so a software interrupt is generated and an address error is detected. The address error detection range can be further expanded by writing FFH to unused areas of the program memory. Address trap reset is generated in case that an instruction is fetched from RAM, DBR or SFR areas.

3.4.2 Debugging

Debugging efficiency can be increased by placing the SWI instruction at the software break point setting address.

3.5 Undefined Instruction Interrupt (INTUNDEF)

Taking code which is not defined as authorized instruction for instruction causes INTUNDEF. INTUNDEF is generated when the CPU fetches such a code and tries to execute it. INTUNDEF is accepted even if non-maskable interrupt is in process. Contemporary process is broken and INTUNDEF interrupt process starts, soon after it is requested.

Note: The undefined instruction interrupt (INTUNDEF) forces CPU to jump into vector address, as software interrupt

(SWI) does.

3.6 Address Trap Interrupt (INTATRAP)

Fetching instruction from unauthorized area for instructions (Address trapped area) causes reset output or address trap interrupt (INTATRAP). INTATRAP is accepted even if non-maskable interrupt is in process. Contemporary process is broken and INTATRAP interrupt process starts, soon after it is requested.

Note: The operating mode under address trapped, whether to be reset output or interrupt processing, is selected on

watchdog timer control register (WDTCR).

Page 42

3.7 External Interrupts

The TMP86CH22UG has 5 external interrupt inputs. These inputs are equipped with digital noise reject circuits (Pulse inputs of less than a certain time are eliminated as noise).

TMP86CH22UG

Edge selection is also possible with INT1 to INT3. The

INT0/P63 pin can be configured as either an external inter-

rupt input pin or an input/output port, and is configured as an input port during reset.

Edge selection, noise reject control and

INT0/P63 pin function selection are performed by the external interrupt

control register (EINTCR).

Source Pin Enable Conditions Release Edge Digital Noise Reject

Pulses of less than 2/fc [s] are eliminated as noise. Pulses of 7/fc [s] or more are considered

INT0

INT1 INT1 IMF  EF5 = 1

INT2 INT2 IMF  EF9 = 1

INT3 INT3 IMF  EF17 = 1

INT5

INT0 IMF  EF4  INT0EN=1 Falling edge

INT5 IMF  EF19 = 1 Falling edge

Falling edge or Rising edge

to be signals. In the SLOW or the SLEEP mode, pulses of less than 1/fs [s] are eliminated as noise. Pulses of 3.5/fs [s] or more are considered to be signals.

Pulses of less than 15/fc or 63/fc [s] are eliminated as noise. Pulses of 49/fc or 193/fc [s] or more are considered to be signals. In the SLOW or the SLEEP mode, pulses of less than 1/fs [s] are eliminated as noise. Pulses of 3.5/fs [s] or more are considered to be signals.

Pulses of less than 7/fc [s] are eliminated as noise. Pulses of 25/fc [s] or more are considered to be signals. In the SLOW or the SLEEP mode, pulses of less than 1/fs [s] are eliminated as noise. Pulses of 3.5/fs [s] or more are considered to be signals.

Pulses of less than 2/fc [s] are eliminated as noise. Pulses of 7/fc [s] or more are considered to be signals. In the SLOW or the SLEEP mode, pulses of less than 1/fs [s] are eliminated as noise. Pulses of 3.5/fs [s] or more are considered to be signals.

Note 1: In NORMAL1/2 or IDLE1/2 mode, if a signal with no noise is input on an external interrupt pin, it takes a maximum of "sig-

nal establishment time + 6/fs[s]" from the input signal's edge to set the interrupt latch.

Note 2: When INT0EN = "0", IL4 is not set even if a falling edge is detected on the

INT0 pin input.

Note 3: When a pin with more than one function is used as an output and a change occurs in data or input/output status, an inter-

rupt request signal is generated in a pseudo manner. In this case, it is necessary to perform appropriate processing such as disabling the interrupt enable flag.

Page 43

3. Interrupt Control Circuit

3.7 External Interrupts

External Interrupt Control Register

EINTCR76543210

(0037H) INT1NC INT0EN - - INT3ES INT2ES INT1ES (Initial value: 00** 000*)

TMP86CH22UG

INT1NC Noise reject time select

INT0EN P63/

INT3 ES INT3 edge select

INT2 ES INT2 edge select

INT1 ES INT1 edge select

INT0 pin configuration

0: Pulses of less than 63/fc [s] are eliminated as noise 1: Pulses of less than 15/fc [s] are eliminated as noise

0: P63 input/output port

INT0 pin (Port P63 should be set to an input mode)

0: Rising edge 1: Falling edge

Note 1: fc: High-frequency clock [Hz], *: Don’t care

Note 2: When the system clock frequency is switched between high and low or when the external interrupt control register

(EINTCR) is overwritten, the noise canceller may not operate normally. It is recommended that external interrupts are disabled using the interrupt enable register (EIR).

Note 3: The maximum time from modifying INT1NC until a noise reject time is changed is 2

/fc.

R/W

Page 44

TMP86CH22UG

4. Special Function Register (SFR)

The TMP86CH22UG adopts the memory mapped I/O system, and all peripheral control and data transfers are performed through the special function register (SFR) or the data buffer register (DBR). The SFR is mapped on address 0000H to 003FH, DBR is mapped on address 0F80H to 0FFFH.

This chapter shows the arrangement of the special function register (SFR) and data buffer register (DBR) for TMP86CH22UG.

4.1 SFR

Address Read Write

0000H Reserved

0001H P1DR

0002H P2DR

0003H P3DR

0004H P3OUTCR

0005H P5DR

0006H P6DR

0007H P7DR

0008H Reserved

0009H P1CR

000AH P5CR

000BH P6CR1

000CH P6CR2

000DH P7CR

000EH ADCCR1

000FH ADCCR2

0010H TREG1AL

0011H TREG1AM

0012H TREG1AH

0013H TREG1B

0014H TC1CR1

0015H TC1CR2

0016H TC1SR -

0017H RTCCR

0018H Reserved

0019H Reserved

001AH TC5CR

001BH TC6CR

001CH Reserved

001DH Reserved

001EH TTREG5

001FH TTREG6

0020H ADCDR2 -

0021H ADCDR1 -

0022H Reserved

0023H Reserved

0024H Reserved

0025H UARTSR UARTCR1

Page 45

4. Special Function Register (SFR)

4.1 SFR

Address Read Write

0026H - UARTCR2

0027H LCDCR

0028H Reserved

0029H Reserved

002AH PWREG5

002BH PWREG6

002CH EIRE

002DH Reserved

002EH ILE

002FH Reserved

0030H Reserved

0031H Reserved

0032H Reserved

0033H Reserved

0034H - WDTCR1

0035H - WDTCR2

0036H TBTCR

0037H EINTCR

0038H SYSCR1

0039H SYSCR2

003AH EIRL

003BH EIRH

003CH ILL

003DH ILH

003EH Reserved

003FH PSW

TMP86CH22UG

Note 1: Do not access reserved areas by the program.

Note 2: − ; Cannot be accessed.

Note 3: Write-only registers and interrupt latches cannot use the read-modify-write instructions (Bit manipulation instructions such

as SET, CLR, etc. and logical operation instructions such as AND, OR, etc.).

Page 46

4.2 DBR

TMP86CH22UG

Address Read Write

0F80H Reserved

0F81H Reserved

0F82H Reserved

0F83H Reserved

0F84H SEG9

0F85H SEG11/10

0F86H SEG13/12

0F87H SEG15/14

0F88H SEG17/16

0F89H SEG19/18

0F8AH SEG21/20

0F8BH SEG23/22

0F8CH SEG25/24

0F8DH SEG27/26

0F8EH SEG29/28

0F8FH SEG31/30

0F90H SIOBR0

0F91H SIOBR1

0F92H SIOBR2

0F93H SIOBR3

0F94H SIOBR4

0F95H SIOBR5

0F96H SIOBR6

0F97H SIOBR7

0F98H - SIOCR1

0F99H SIOSR SIOCR2

0F9AH - STOPCR

0F9BH RDBUF TDBUF

0F9CH P2PRD -

0F9DH P3PRD -

0F9EH P1LCR

0F9FH P5LCR

Page 47

4. Special Function Register (SFR)

4.2 DBR TMP86CH22UG

Address Read Write

0FA0H P7LCR

0FA1H Reserved

0FA2H Reserved

0FA3H Reserved

0FA4H Reserved

0FA5H Reserved

0FA6H Reserved

0FA7H Reserved

0FA8H Reserved

0FA9H Reserved

0FAAH Reserved

0FABH Reserved

0FACH Reserved

0FADH Reserved

0FAEH Reserved

0FAFH Reserved

0FB0H Reserved

0FB1H Reserved

0FB2H Reserved

0FB3H Reserved

0FB4H Reserved

0FB5H Reserved

0FB6H Reserved

0FB7H Reserved

0FB8H Reserved

0FB9H Reserved

0FBAH Reserved

0FBBH Reserved

0FBCH Reserved

0FBDH Reserved

0FBEH Reserved

0FBFH Reserved

Address Read Write

0FC0H Reserved

: : : :

0FDFH Reserved

Address Read Write

0FE0H Reserved

: : : :

0FFFH Reserved

Note 1: Do not access reserved areas by the program. Note 2: − ; Cannot be accessed. Note 3: Write-only registers and interrupt latches cannot use the read-modify-write instructions (Bit manipulation instructions such

as SET, CLR, etc. and logical operation instructions such as AND, OR, etc.).

Page 48

TMP86CH22UG

5. I/O Ports

The TMP86CH22UG have 6 parallel input/output ports (33 pins) as follows.

Primary Function Secondary Functions

Port P1 8-bit I/O port

Port P2 3-bit I/O port

Port P3

Port P5 8-bit I/O port LCD Segment output.

Port P6 4-bit I/O port

Port P7 7-bit I/O port LCD Segment output.

2-bit I/O port

1-bit output port

Each output port contains a latch, which holds the output data. All input ports do not have latches, so the external input data should be externally held until the input data is read from outside or reading should be performed several timer before processing. Figure 5-1 shows input/output timing examples.

External interrupt input, UART input/output, serial interface input/output and segment output.

Low-frequency resonator connections, external interrupt input, STOP mode release signal input.

Timer/counter input/output and divider output.

Analog input, external interrupt input, timer/counter input and STOP mode release signal input.

External data is read from an I/O port in the S1 state of the read cycle during execution of the read instruction. This timing cannot be recognized from outside, so that transient input such as chattering must be processed by the program.

Output data changes in the S2 state of the write cycle during execution of the instruction which writes to an I/O port.

Fetch cycle Fetch cycle Read cycle

S0 S1 S2 S3 S0 S1 S2 S3 S0 S1 S2 S3

Instruction execution cycle

Input strobe

Data input

Fetch cycle Fetch cycle Write cycle

S0 S1 S2 S3 S0 S1 S2 S3 S0 S1 S2 S3

Instruction execution cycle

Output strobe

Ex: LD A, (x)

(a) Input timing

Ex: LD (x), A

Data output

Note: The positions of the read and write cycles may vary, depending on the instruction.

Old New

(b) Output timing

Figure 5-1 Input/Output Timing (Example)

Page 49

5. I/O Ports

5.1 Port P1 (P17 to P10)

Port P1 is an 8-bit input/output port which can be configured as an input or an output in one-bit unit. Input/output mode is specified by the P1 control register (P1CR).

During reset, the P1DR, P1CR and P1LCR are initialized to “0”.

Port P1 is also used as UART input/output, an external interrupt input, serial interface input/output and segment output of LCD. It is necessary to set registers for using each function. The following table shows register programming for multi function ports. When the port P16 is used, set not only P16 port registers but also P31 port register. Also set not only port P17 registers but also P32 register similarly. Though the TMP86CH22UG do not have P31 and P32 ports, it is necessary to set P3 port registers for keeping software compatibility with TMP86C923XB. For detail, refer to Table 5-2 and Table 5-3 and then refer to description of P3OUTCR and P3DR registers.

TMP86CH22UG

Table 5-1 Register programming for P15 to P10

Function (Port P15 to P10)

Port input, UART input, SIO input or external interrupt input

Port "0" output "0" "1" "0"

Port "1" output and UART output "1" "1" "0"

LCD segment output

Note: Asterisk (*) indicates "1" or "0" either of which can be selected.

P1DR[5:0] P1CR[5:0] P1LCR[5:0]

*"0""0"

Table 5-2 Register programming for P16

Programmed Value

Function (Port P16)

SIO output * "0" "0"

Port input * "0" "0"

Port "0" output "0" "1" "0"

Port "1" output "1" "1" "0"

LCD segment output * * "1"

P1DR[6] P1CR[6] P1LCR[6] P3DR[1]

Programmed Value

*"1"

P3OUTCR[1]

(SIOEN1)

"1"

"0"

Note 1: When P16 is used as port output, set in order each registers as follows. If it is not set appropriately, an overcurrent may

flow causing damage to the emulation chip (86C923XB).

STEP 1. P3OUTCR<SIOEN1> = “0” STEP 2 P1LCR[6] = “0” STEP 3. P1CR[6] = “1”

Note 2: When P16 is used as SO output, set in order each registers as follows. If it is not set appropriately, an overcurrent may

flow causing damage to the emulation chip (86C923XB).

STEP 1. P1LCR[6]="0" STEP 2. P1CR[6]="0" STEP 3. P3OUTCR<SIOEN1>="1"

Note 3: Asterisk (*) indicates "1" or "0" either of which can be selected.

Page 50

TMP86CH22UG

Table 5-3 Register programming for P17

Programmed Value

Function (Port P17)

SIO output * "0" "0"

Port input or SIO input * "0" "0"

Port "0" output "0" "1" "0"

Port "1" output "1" "1" "0"

LCD segment output * * "1"

P1DR[7] P1CR[7] P1LCR[7] P3DR[2]

"1"

Note 1: When P17 is used as port output, set in order each registers as follows. If it is not set appropriately, an overcurrent may

flow causing damage to the emulation chip (86C923XB).

STEP 1. P3OUTCR<SIOEN2> = “0” STEP 2 P1LCR[7] = “0” STEP 3. P1CR[7] = “1”

Note 2: When P17 is used as SCK output, set in order each registers as follows. If it is not set appropriately, an overcurrent may

flow causing damage to the emulation chip (86C923XB).

P3OUTCR[2]

(SIOEN2)

"1"

"0"

STEP 1. P1LCR[7]="0" STEP 2. P1CR[7]="0" STEP 3. P3OUTCR<SIOEN2>="1"

Note 3: Asterisk (*) indicates "1" or "0" either of which can be selected.

Table 5-4 Values Read from P1DR and register programming

Conditions

P1CR P1LCR

"0" "0" Terminal input data

"0" "1" "0"

"1"

"0"

"1"

Values Read from P1DR

Output latch contents

Page 51

5. I/O Ports

5.1 Port P1 (P17 to P10)

STOP

OUTEN

P1LCRi input

P1LCR[i]

P1CR[i] input

P1CR[i]

Data input (P1DR[i])

Data output (P1DR[i])

P3DR[1] P3OUTCR<SIOEN1>

Output latch

TMP86CH22UG

(In case of P16)

(In case of P17)

(Others)

P1i

P1DR

(0001H)

R/W

P1LCR

(0F9EH)

LCD data output

Note1 : i = 7 to 0 Note2 : STOP is bit7 in SYSCR1 Note3 : OUTEN is bit4 in SYSCR1

(P1DR[1]) TXD output

(P1DR[6]) SO output

P3OUTCR<SIOEN1> (P1DR[7])

SCK output P3OUTCR<SIOEN2>

Figure 5-2 Port 1

76543210

P17

SEG24

SCK

76543210

P1LCR

P16

SEG25

P15

SEG26

P14

SEG27

INT3

Port P1/segment output control (set for each bit individually)

P13

SEG28

INT2

P12

SEG29

INT1

P11

SEG30

TXD

P10

SEG31

RXD

0: P1 input/output port or secondary function (expect for segment) 1: Segment output

(In case of P11)

(In case of P16)

(In case of P17)

(Others)

(Initial value: 0000 0000)

R/W

P1CR

(0009H)

76543210

(Initial value: 0000 0000)

P1CR

P1 port input/output control (set for each bit individually)

0: Input mode, SO output or 1: Output mode

SCK output

Note 1: When P16 and P17 is used as port output or SIO output, set in order each registers according to notes of Table 5-2 and

Table 5-3.

Note 2: The port placed in input mode reads the pin input state. Therefore, when the input and output modes are used together,

the output latch (P1DR) contents for the port in input mode might be changed by executing a bit manipulation instruction.

Page 52

R/W

TMP86CH22UG

5.2 Port P2 (P22 to P20)

Port P2 is a 3-bit input/output port.

It is also used as an external interrupt, a STOP mode release signal input, and low-frequency crystal oscillator connection pins. When used as an input port or a secondary function pins, respective output latch (P2DR) should be set to “1”.

During reset, the output latch is initialized to “1”.

A low-frequency crystal oscillator (32.768 kHz) is connected to pins P21 (XTIN) and P22 (XTOUT) in the dualclock mode. In the single-clock mode, pins P21 and P22 can be used as normal input/output ports.

It is recommended that pin P20 should be used as an external interrupt input, a STOP mode release signal input, or an input port. If it is used as an output port, the interrupt latch is set on the falling edge of the output pulse.

P2 port output latch (P2DR) and P2 port terminal input (P2PRD) are located on their respective address.

When read the output latch data, the P2DR register should be read and when read the terminal input data, the P2PRD register should be read. If a read instruction is executed for port P2, read data of bits 7 to 3 are unstable.

Data input (P2PRD[0])

Data input

Data output (P2DR[0])

Second function input

Data input (P2PRD[1])

Data output (P2DR[1])

Data input (P2PRD[2])

Data output (P2DR[2])

P2DR

(0002H)

R/W

P2PRD

(0F9CH)

Read only

D Q

Output latch

Data input

D Q

Output latch

Data input

D Q

Output latch

STOP

OUTEN

XTEN

Osc. enable

Note1 : STOP is bit7 in SYSCR1. Note2 : OUTEN is bit4 in SYSCR1.

Figure 5-3 Port 2

76543210

P22

XTOUT

76543210

P22 P21 P20

P21

XTIN

P20

INT5

STOP

(Initial value: **** *111)

P20 (INT5, STOP)

P21 (XTIN)

P22 (XTOUT)

Note: Port P20 is used as STOP pin. Therefore, when stop mode is started, OUTEN does not affect to P20, and P20 becomes

High-Z mode.

Page 53

5. I/O Ports

5.3 Port P3 (P37, P34 to P33)

Port P3 is a 1-bit output and a 2-bit input/output port. It can be selected whether output circuit of P34 to P33 port is C-MOS output or a sink open drain individually, by setting P3OUTCR. When a corresponding bit of P3OUTCR is “0”, the output circuit is selected to a sink open drain and when a corresponding bit of P3OUTCR is “1”, the output circuit is selected to a C-MOS output.

During reset, the P3DR is initialized to "1", and the P3OUTCR is initialized to "0".

Port P3 is also used as a timer/counter input/output, divider output. It is necessary to set registers for using each function. The following table shows register programming for multi function ports.

P3 port output latch (P3DR) and P3 port terminal input (P3PRD) are located on their respective address. When read the output latch data, the P3DR should be read and when read the terminal input data, the P3PRD register should be read. If a read instruction is executed for each registers of P3 port, read data of reserved bits are unstable.

TMP86CH22UG

Table 5-5 Register programming for P34 to P33

Port input or timer counter input

Port "0" output "0"

Port "1" output or timer counter output "1"

Table 5-6 Register programming for P37

Port "0" output "0"

Port "1" output or divider output "1"

STOP

OUTEN

P3OUTCR[i]

P3OUTCR[i] input

Data input (P3PRD[i])

Output latch read (P3DR[i])

Function (Port P34 to P33)

Function (Port P37)

Programmed Value

P3DR[4:3] P3OUTCR[4:3]

"1" "0"

Programming

for each

applications

Programmed

Val ue

P3DR[7]

Data output (P3DR[i])

Second function output

Second function input

STOP

OUTEN

P3OUTCR[7]

Data output (P3DR[7])

Second function output

Output latch

a) P34, P33

Output latch

b) P37

Figure 5-4 Port 3

Page 54

P3i

Note1 : i = 4,3 Note2 : STOP is bit7 in SYSCR1. Note3 : OUTEN is bit4 in SYSCR1.

P37

76543210

P3DR

(0003H)

R/W

P37

DVO

P34

PWM5

PDO5

TC5

P33

PWM6

PDO6

PPG6

TC6

"1" "1" "1" (Initial value: 1**1 1***)

Note 1: Make sure to write "1" to bit2 to bit0 in P3DR.

Note 2: If a read instruction is executed for P3DR, read data of bits 6 to 5 and bit 2 to 0 are unstable.

TMP86CH22UG

P3OUTCR

(0004H)

76543210

P34 P33 SIOEN2 SIOEN1 "0" (Initial value: **** 0000)

P34, P33

SIOEN1 Port P16 control

Port P3 output circuit control (set for each bit individually)

0: Sink open-drain output 1: C-MOS output

0: SCK input, Port input, Port output or LCD output 1: SCK output

0: Port input, Port output or LCD output 1: SO output

Note 1: When P16 and P17 is used as port output or SIO output, set in order each registers according to notes of Table 1-2 and

Table 1-3. Note 2: If a read instruction is executed for P3OUTCR, read data of bits 7 to 5 and bit 0 are unstable. Note 3: Make sure to write "0" to bit 0 in P3OUTCR.

P3PRD

(0F9DH)

Read only

76543210

P34 P33

Note 1: If a read instruction is executed for P3PRD, read data of bits 7 to 5 and bits 2 to 0 are unstable.

R/WSIOEN2 Port P17 control

Page 55

5. I/O Ports

5.4 Port P5 (P57 to P50)

Port P5 is an 8-bit input/output port which can be configured as an input or an output in one-bit unit. Input/output

mode is spedified by the P5 control register (P5CR).

During reset, the P5DR, P5CR and P5LCR are initialized to “0”.

Port P5 is also used as a segment output of LCD. It is necessary to set registers for using each function. The fol-

lowing table shows register programming for multi function ports.

TMP86CH22UG

Table 5-7 Register programming for P57 to P50

Function (Port P57 to P50)

Port input * "0" "0"

Port "0" output "0" "1" "0"

Port "1" output and UART output "1" "1" "0"

LCD segment output * * "1"

P5DR[7:0] P5CR[7:0] P5LCR[7:0]

Note: Asterisk (*) indicates "1" or "0" either of which can be selected.

Table 5-8 Values Read from P5DR and register programming

STOP

OUTEN

Conditions

P5CR P5LCR

"0" "0" Terminal input data

"0" "1" "0"

"1"

"0"

"1"

Values Read from P5DR

Output latch contents

Programmed Value

P5LCR[i] input

P5LCR[i]

P5CR[i] input

P5CR[i]

Data input (P5DR[i])

Data output (P5DR[i])

LCD data output

Output latch

Figure 5-5 Port 5

P5i

Note1 : i = 7 to 0 Note2 : STOP is bit7 in SYSCR1 Note3 : OUTEN is bit4 in SYSCR1

Page 56

TMP86CH22UG

P5DR

(0005H)

R/W

P5LCR

(0F9FH)

P5CR

(000AH)

76543210

P57

SEG16

76543210

P5LCR

76543210

P5CR

P56

SEG17

Port P5/segment output control (set for each bit individually)

P5 port input/output control (set for each bit individually)

P55

SEG18

P54

SEG19

P53

SEG20

0: P5 input/output port 1: LCD segment output

0: Input mode 1: Output mode

P52

SEG21

P51

SEG22

P50

SEG23

(Initial value: 0000 0000)

Note: The port placed in input mode reads the pin input state. Therefore, when the input and output modes are used together, the

output latch (P5DR) contents for the port in input mode might be changed by executing a bit manipulation instruction.

R/W

Page 57

5. I/O Ports

5.5 Port P6 (P64 to P61)

Port P6 is an 4-bit input/output port which can be configured as an input or an output in one-bit unit. Input/output

mode is specified by the P6 control register (P6CR1) and input control register (P6CR2).

During reset, the output latch (P6DR) and P6CR1 are initialized to "0", P6CR2 is initialized to "1".

Port P6 is also used as an analog input, Key on Wake up input, timer/counter input and external interrupt input. It

is necessary to set registers for using each function. The following table shows register programming for multi function ports.

TMP86CH22UG

Table 5-9 Register programming for P64 to P61

Function (Port P64 to P61)

Port input, external interrupt input or timer counter input

Analog input or Key on wake up input * "0" "0"

Port "0" output "0" "1" *

Port "1" output "1" "1" *

Note: Asterisk (*) indicates "1" or "0" either of which can be selected.

P6DR[4:1] P6CR1[4:1] P6CR2[4:1]

*"0""1"

Table 5-10 Values Read from P6DR and register programming

Conditions

P6CR1 P6CR2

"0" "0" "0"

"0" "1" Terminal input data

"1"

"0"

"1"

Values Read from P6DR

Output latch contents

Programmed Value

Page 58

TMP86CH22UG

P6CR2[i]

P6CR2[i] input

P6CR1[i]

P6CR1[i] input

Second function input

Data input (P6DR[i])

Data output (P6DR[i])

STOP

OUTEN

Analog input

AINDS

SAIN

STOP2

Key-on wakeup

P6CR2[4]

P6CR2[4] input

P6CR1[4]

P6CR1[4] input

Data input (P6DR[4])

a) P63 to P61

P6i

Note1 : i = 3 to 1 Note2 : STOP is bit 7 in SYSCR1. Note3 : SAIN is AD input select signal. Note4 : STOP2EN is bit4 in STOPCR.

P6DR

(0006H)

R/W

P6CR1

(000BH)

Data output (P6DR[4])

P64

STOP

OUTEN

Analog input

AINDS

SAIN

b) P64

Figure 5-6 Port 6 and P6CR

76543210

P64

AIN4

STOP2

76543210

"0" "0" "0" "0" (Initial value: ***0 000*)

P6CR1

I/O control for port P6 (Specified for each bit)

P63

AIN3

INT0

0: Port input, Key on wake up input, Analog input, external input or timer counter input 1: Port output

P62

AIN2

ECNT

P61

AIN1

ECIN

(Initial value: ***0 000*)

R/W

Note 1: Make sure to write "0" to bit7 to bit5, bit0 in P6CR1.

P6CR2

(000CH)

76543210

P6CR2

P6 port input control (Specified for each bit)

(Initial value: ***1 111*)

0: Analog input or Key on wake up input 1: Port input, external interrupt input or timer counter input

Page 59

R/W

5. I/O Ports

5.6 Port P7 (P76 to P70)

Port P7 is a 7-bit input/output port which can be configured as an input or an output in one-bit unit. Input/output

mode is spedified by the P7 control register (P7CR).

During reset, the P7DR, P7CR and P7LCR are initialized to “0”.

Port P7 is also used as a segment output of LCD. It is necessary to set registers for using each function. The fol-

lowing table shows register programming for multi function ports.

TMP86CH22UG

Table 5-11 Register programming for P76 to P70

Function (Port P76 to P70)

Port input * "0" "0"

Port "0" output "0" "1" "0"

Port "1" output and UART output "1" "1" "0"

LCD segment output * * "1"

P7DR[6:0] P7CR[6:0] P7LCR[6:0]

Note: Asterisk (*) indicates "1" or "0" either of which can be selected.

Table 5-12 Values Read from P7DR and register programming

STOP

OUTEN

Conditions

P7CR P7LCR

"0" "0" Terminal input data

"0" "1" "0"

"1"

"0"

"1"

Values Read from P7DR

Output latch contents

Programmed Value

P7LCR[i] input

P7LCR[i]

P7CR[i] input

P7CR[i]

Data input (P7DR[i])

Data output (P7DR[i])

LCD data output

Output latch

Figure 5-7 Port 7

P7i

Note1 : i = 6 to 0 Note2 : STOP is bit7 in SYSCR1. Note3 : OUTEN is bit4 in SYSCR1.

Page 60

TMP86CH22UG

P7DR

(0007H)

R/W

P7LCR

(0FA0H)

76543210

P76

SEG9

76543210

"0" (Initial value: 0000 0000)

P7LCR

Port P7/segment output control (set for each bit individually)

P75

SEG10

P74

SEG11

P73

SEG12

0: P7 input/output port 1: LCD segment output

P72

SEG13

P71

SEG14

P70

SEG15

(Initial value: 0000 0000)

Note: Because the LCD driver does not operate correctly, always set "0" to bit7 of P7LCR.

P7CR

(000DH)

76543210

(Initial value: 0000 0000)

P7CR

P7 port input/output control (set for each bit individually)

0: Input mode 1: Output mode

Note: The port placed in input mode reads the pin input state. Therefore, when the input and output modes are used together, the

output latch (P7DR) contents for the port in input mode might be changed by executing a bit manipulation instruction.

R/W

Page 61

5. I/O Ports

5.6 Port P7 (P76 to P70) TMP86CH22UG

Page 62

6. Watchdog Timer (WDT)

The watchdog timer is a fail-safe system to detect rapidly the CPU malfunctions such as endless loops due to spu-

rious noises or the deadlock conditions, and return the CPU to a system recovery routine.

The watchdog timer signal for detecting malfunctions can be programmed only once as “reset request” or “inter-

rupt request”. Upon the reset release, this signal is initialized to “reset request”.

When the watchdog timer is not used to detect malfunctions, it can be used as the timer to provide a periodic inter-

rupt.

Note: Care must be taken in system design since the watchdog timer functions are not be operated completely due to

effect of disturbing noise.

6.1 Watchdog Timer Configuration

fc/223 or fs/2 fc/221 or fs/2 fc/219 or fs/2

fc/217 or fs/2

Internal reset

Selector

Binary counters

Clock

Clear

1 2

Overflow

WDT output

Reset release

Interrupt request

TMP86CH22UG

Reset request

INTWDT interrupt request

WDTT

WDTEN

0034

WDTCR1 WDTCR2

Watchdog timer control registers

Writing disable code

Controller

0035

Writing clear code

Figure 6-1 Watchdog Timer Configuration

WDTOUT

Page 63

6. Watchdog Timer (WDT)

6.2 Watchdog Timer Control

The watchdog timer is controlled by the watchdog timer control registers (WDTCR1 and WDTCR2). The watch-

dog timer is automatically enabled after the reset release.

6.2.1 Malfunction Detection Methods Using the Watchdog Timer

The CPU malfunction is detected, as shown below.

If the CPU malfunctions such as endless loops or the deadlock conditions occur for some reason, the watchdog timer output is activated by the binary-counter overflow unless the binary counters are cleared. When WDTCR1<WDTOUT> is set to “1” at this time, the reset request is generated and then internal hardware is initialized. When WDTCR1<WDTOUT> is set to “0”, a watchdog timer interrupt (INTWDT) is generated.

The watchdog timer temporarily stops counting in the STOP mode including the warm-up or IDLE/SLEEP mode, and automatically restarts (continues counting) when the STOP/IDLE/SLEEP mode is inactivated.

TMP86CH22UG

1. Set the detection time, select the output, and clear the binary counter.

2. Clear the binary counter repeatedly within the specified detection time.

Note:The watchdog timer consists of an internal divider and a two-stage binary counter. When the clear code 4EH

is written, only the binary counter is cleared, but not the internal divider. The minimum binary-counter overflow time, that depends on the timing at which the clear code (4EH) is written to the WDTCR2 register, may be 3/ 4 of the time set in WDTCR1<WDTT>. Therefore, write the clear code using a cycle shorter than 3/4 of the time set to WDTCR1<WDTT>.

Example :Setting the watchdog timer detection time to 221/fc [s], and resetting the CPU malfunction detection

LD (WDTCR2), 4EH : Clears the binary counters.

Within 3/4 of WDT detection time

LD (WDTCR1), 00001101B

LD (WDTCR2), 4EH : Clears the binary counters.

(WDTCR2), 4EH : Clears the binary counters (always clears immediately before and

← 10, WDTOUT ← 1

: WDTT

after changing WDTT).

Page 64

Watchdog Timer Control Register 1

TMP86CH22UG

WDTCR1

(0034H)

76543210

(ATAS) (ATOUT) WDTEN WDTT WDTOUT (Initial value: **11 1001)

WDTEN Watchdog timer enable/disable

WDTT

WDTOUT Watchdog timer output select

Watchdog timer detection time [s]

0: Disable (Writing the disable code to WDTCR2 is required.) 1: Enable

NORMAL1/2 mode

DV7CK = 0 DV7CK = 1

0: Interrupt request 1: Reset request

/fc 217/fs 217/fs

/fc 215/fs 215fs

fc 213/fs 213fs

/fc 211/fs 211/fs

SLOW1/2

mode

Note 1: After clearing WDTOUT to “0”, the program cannot set it to “1”. Note 2: fc: High-frequency clock [Hz], fs: Low-frequency clock [Hz], *: Don’t care Note 3: WDTCR1 is a write-only register and must not be used with any of read-modify-write instructions. If WDTCR1 is read, a

don’t care is read.

Note 4: To activate the STOP mode, disable the watchdog timer or clear the counter immediately before entering the STOP mode.

After clearing the counter, clear the counter again immediately after the STOP mode is inactivated.

Note 5: To clear WDTEN, set the register in accordance with the procedures shown in “1.2.3 Watchdog Timer Disable”.

Watchdog Timer Control Register 2

Write

only

Write

only

Write

only

WDTCR2

(0035H)

76543210

WDTCR2

Write Watchdog timer control code

Note 1: The disable code is valid only when WDTCR1<WDTEN> = 0.

Note 2: *: Don’t care

Note 3: The binary counter of the watchdog timer must not be cleared by the interrupt task.

Note 4: Write the clear code 4EH using a cycle shorter than 3/4 of the time set in WDTCR1<WDTT>.

6.2.2 Watchdog Timer Enable

Setting WDTCR1<WDTEN> to “1” enables the watchdog timer. Since WDTCR1<WDTEN> is initialized to “1” during reset, the watchdog timer is enabled automatically after the reset release.

(Initial value: **** ****)

4EH: Clear the watchdog timer binary counter (Clear code) B1H: Disable the watchdog timer (Disable code) D2H: Enable assigning address trap area Others: Invalid

Write

only

Page 65

6. Watchdog Timer (WDT)

6.2 Watchdog Timer Control

6.2.3 Watchdog Timer Disable

To disable the watchdog timer, set the register in accordance with the following procedures. Setting the register in other procedures causes a malfunction of the microcontroller.

Note:While the watchdog timer is disabled, the binary counters of the watchdog timer are cleared.

Example :Disabling the watchdog timer

TMP86CH22UG

1. Set the interrupt master flag (IMF) to “0”.

2. Set WDTCR2 to the clear code (4EH).

3. Set WDTCR1<WDTEN> to “0”.

4. Set WDTCR2 to the disable code (B1H).

LD (WDTCR2), 04EH : Clears the binary coutner

LDW (WDTCR1), 0B101H

: IMF

: WDTEN

Table 6-1 Watchdog Timer Detection Time (Example: fc = 16.0 MHz, fs = 32.768 kHz)

Watchdog Timer Detection Time[s]

WDTT

DV7CK = 0 DV7CK = 1

00 2.097 4 4

01 524.288 m 1 1

10 131.072 m 250 m 250 m

11 32.768 m 62.5 m 62.5 m

NORMAL1/2 mode

6.2.4 Watchdog Timer Interrupt (INTWDT)

When WDTCR1<WDTOUT> is cleared to “0”, a watchdog timer interrupt request (INTWDT) is generated by the binary-counter overflow.

← 0

← 0, WDTCR2 ← Disable code

SLOW

mode

A watchdog timer interrupt is the non-maskable interrupt which can be accepted regardless of the interrupt master flag (IMF).

When a watchdog timer interrupt is generated while the other interrupt including a watchdog timer interrupt is already accepted, the new watchdog timer interrupt is processed immediately and the previous interrupt is held pending. Therefore, if watchdog timer interrupts are generated continuously without execution of the RETN instruction, too many levels of nesting may cause a malfunction of the microcontroller.

To generate a watchdog timer interrupt, set the stack pointer before setting WDTCR1<WDTOUT>.

Example :Setting watchdog timer interrupt

LD SP, 023FH : Sets the stack pointer

LD (WDTCR1), 00001000B

: WDTOUT

← 0

Page 66

6.2.5 Watchdog Timer Reset

When a binary-counter overflow occurs while WDTCR1<WDTOUT> is set to “1”, a watchdog timer reset request is generated. When a watchdog timer reset request is generated, the internal hardware is reset. The reset time is maximum 24/fc [s] (1.5 µs @ fc = 16.0 MHz).

Note:When a watchdog timer reset is generated in the SLOW1 mode, the reset time is maximum 24/fc (high-fre-

quency clock) since the high-frequency clock oscillator is restarted. However, when crystals have inaccuracies upon start of the high-frequency clock oscillator, the reset time should be considered as an approximate value because it has slight errors.

Clock

TMP86CH22UG

219/fc [s]

217/fc

(WDTT=11)

Binary counter

Overflow INTWDT interrupt request

(WDTCR1<WDTOUT>= "0")

Internal reset

(WDTCR1<WDTOUT>= "1")

Write 4E

30 1 2 3 0

to WDTCR2

Figure 6-2 Watchdog Timer Interrupt

A reset occurs

Page 67

6. Watchdog Timer (WDT)

6.3 Address Trap

The Watchdog Timer Control Register 1 and 2 share the addresses with the control registers to generate address

traps.

Watchdog Timer Control Register 1

TMP86CH22UG

WDTCR1

(0034H)

7654 3 21 0

ATAS ATOUT (WDTEN) (WDTT) (WDTOUT) (Initial value: **11 1001)

ATAS

ATOUT Select opertion at address trap

Select address trap generation in the internal RAM area

0: Generate no address trap 1: Generate address traps (After setting ATAS to “1”, writing the control code D2H to WDTCR2 is reguired)

0: Interrupt request 1: Reset request

Watchdog Timer Control Register 2

WDTCR2

(0035H)

76543210

WDTCR2

Write Watchdog timer control code and address trap area control code

D2H: Enable address trap area selection (ATRAP control code) 4EH: Clear the watchdog timer binary counter (WDT clear code) B1H: Disable the watchdog timer (WDT disable code) Others: Invalid

6.3.1 Selection of Address Trap in Internal RAM (ATAS)

WDTCR1<ATAS> specifies whether or not to generate address traps in the internal RAM area. To execute an instruction in the internal RAM area, clear WDTCR1<ATAS> to “0”. To enable the WDTCR1<ATAS> setting, set WDTCR1<ATAS> and then write D2H to WDTCR2.

Write

only

(Initial value: **** ****)

Write

only

Executing an instruction in the SFR or DBR area generates an address trap unconditionally regardless of the setting in WDTCR1<ATAS>.

6.3.2 Selection of Operation at Address Trap (ATOUT)

When an address trap is generated, either the interrupt request or the reset request can be selected by WDTCR1<ATOUT>.

6.3.3 Address Trap Interrupt (INTATRAP)

While WDTCR1<ATOUT> is “0”, if the CPU should start looping for some cause such as noise and an attempt be made to fetch an instruction from the on-chip RAM (while WDTCR1<ATAS> is “1”), DBR or the SFR area, address trap interrupt (INTATRAP) will be generated.

An address trap interrupt is a non-maskable interrupt which can be accepted regardless of the interrupt master flag (IMF).

When an address trap interrupt is generated while the other interrupt including a watchdog timer interrupt is already accepted, the new address trap is processed immediately and the previous interrupt is held pending. Therefore, if address trap interrupts are generated continuously without execution of the RETN instruction, too many levels of nesting may cause a malfunction of the microcontroller.

To generate address trap interrupts, set the stack pointer beforehand.

Page 68

6.3.4 Address Trap Reset

While WDTCR1<ATOUT> is “1”, if the CPU should start looping for some cause such as noise and an attempt be made to fetch an instruction from the on-chip RAM (while WDTCR1<ATAS> is “1”), DBR or the SFR area, address trap reset will be generated.

When an address trap reset request is generated, the internal hardware is reset. The reset time is maximum 24/fc [s] (1.5 µs @ fc = 16.0 MHz).

Note:When an address trap reset is generated in the SLOW1 mode, the reset time is maximum 24/fc (high-fre-

TMP86CH22UG

Page 69

6. Watchdog Timer (WDT)

6.3 Address Trap TMP86CH22UG

Page 70

7. Time Base Timer (TBT)

The time base timer generates time base for key scanning, dynamic displaying, etc. It also provides a time base

timer interrupt (INTTBT).

7.1 Time Base Timer

7.1.1 Configuration

TMP86CH22UG

fc/223 or fs/2 fc/221 or fs/2

fc/216 or fs/2 fc/214 or fs/2 fc/213 or fs/2 fc/212 or fs/2 fc/211 or fs/2

fc/29 or fs/2

Time base timer control register

Figure 7-1 Time Base Timer configuration

7.1.2 Control

Time Base Timer is controled by Time Base Timer control register (TBTCR).

Time Base Timer Control Register

7 6543210

MPX

TBTCR (0036H)

(DVOEN) (DVOCK) (DV7CK) TBTEN TBTCK (Initial Value: 0000 0000)

Source clock

TBTCR

Falling edge

TBTENTBTCK

detector

IDLE0, SLEEP0 release request

INTTBT interrupt request

TBTEN

TBTCK

Time Base Timer enable / disable

Time Base Timer interrupt Frequency select : [Hz]

0: Disable 1: Enable

000

001

010

011

100

101

110

111

NORMAL1/2, IDLE1/2 Mode SLOW1/2

DV7CK = 0 DV7CK = 1

fc/2

Note 1: fc; High-frequency clock [Hz], fs; Low-frequency clock [Hz], *; Don't care

Page 71

SLEEP1/2

fs/2

fs/2 –

Mode

fs/2

–

R/W

7. Time Base Timer (TBT)

7.1 Time Base Timer

Note 2: The interrupt frequency (TBTCK) must be selected with the time base timer disabled (TBTEN="0"). (The interrupt fre-

Example :Set the time base timer frequency to fc/216 [Hz] and enable an INTTBT interrupt.

Table 7-1 Time Base Timer Interrupt Frequency ( Example : fc = 16.0 MHz, fs = 32.768 kHz )

TMP86CH22UG

quency must not be changed with the disable from the enable state.) Both frequency selection and enabling can be performed simultaneously.

LD (TBTCR) , 00000010B ; TBTCK ← 010

LD (TBTCR) , 00001010B ; TBTEN ← 1

DI ; IMF ← 0

SET (EIRL) . 6

TBTCK

000 1.91 1 1

001 7.63 4 4

010 244.14 128 –

011 976.56 512 –

100 1953.13 1024 –

101 3906.25 2048 –

110 7812.5 4096 –

111 31250 16384 –

7.1.3 Function

An INTTBT ( Time Base Timer Interrupt ) is generated on the first falling edge of source clock ( The divider

output of the timing generato which is selected by TBTCK. ) after time base timer has been enabled.

The divider is not cleared by the program; therefore, only the first interrupt may be generated ahead of the set

interrupt period ( Figure 7-2 ).

Time Base Timer Interrupt Frequency [Hz]

NORMAL1/2, IDLE1/2 Mode NORMAL1/2, IDLE1/2 Mode SLOW1/2, SLEEP1/2 Mode

DV7CK = 0 DV7CK = 1

Source clock

TBTCR<TBTEN>

INTTBT

Figure 7-2 Time Base Timer Interrupt

Interrupt period

Enable TBT

Page 72

7.2 Divider Output (DVO)

Approximately 50% duty pulse can be output using the divider output circuit, which is useful for piezoelectric

buzzer drive. Divider output is from

7.2.1 Configuration

Output latch

Data output

fc/213 or fs/2 fc/212 or fs/2 fc/211 or fs/2 fc/210 or fs/2

D Q

MPX

B C Y

DVOCK

DVOEN

TBTCR

Divider output control register

(a) configuration (b) Timing chart

TMP86CH22UG

DVO pin.

DVO pin

Port output latch

TBTCR<DVOEN>

DVO pin output

7.2.2 Control

The Divider Output is controlled by the Time Base Timer Control Register.

Time Base Timer Control Register

7654321 0

TBTCR

(0036H)

DVOEN DVOCK (DV7CK) (TBTEN) (TBTCK) (Initial value: 0000 0000)

DVOEN

DVOCK

Divider output enable / disable

Divider Output ( frequency selection: [Hz]

Figure 7-3 Divider Output

0: Disable 1: Enable

NORMAL1/2, IDLE1/2 Mode

DV7CK = 0 DV7CK = 1

DVO)

fc/2

fs/2

R/W

SLOW1/2

SLEEP1/2

Mode

fs/2

R/W

Note: Selection of divider output frequency (DVOCK) must be made while divider output is disabled (DVOEN="0"). Also, in other

words, when changing the state of the divider output frequency from enabled (DVOEN="1") to disable(DVOEN="0"), do not change the setting of the divider output frequency.

Page 73

7. Time Base Timer (TBT)

7.2 Divider Output (DVO)

Example :1.95 kHz pulse output (fc = 16.0 MHz)

TMP86CH22UG

LD (TBTCR) , 00000000B ; DVOCK ← "00"

LD (TBTCR) , 10000000B ; DVOEN ← "1"

Table 7-2 Divider Output Frequency ( Example : fc = 16.0 MHz, fs = 32.768 kHz )

Divider Output Frequency [Hz]

DVOCK

00 1.953 k 1.024 k 1.024 k

01 3.906 k 2.048 k 2.048 k

10 7.813 k 4.096 k 4.096 k

11 15.625 k 8.192 k 8.192 k

NORMAL1/2, IDLE1/2 Mode

DV7CK = 0 DV7CK = 1

SLOW1/2, SLEEP1/2

Mode

Page 74

8. 18-Bit Timer/Counter (TC1)

8.1 Configuration

INTTC1

F/F

TC1SR

CMP

TMP86CH22UG

TREG1A

TREG1B

B Y

or fs/2

fc/2

SGEDG

TC1M

generator

Window pulse

or fs/2

fc/2

WGPSCK

TC6OUT

Edge detector

B Y

P33

ECNT Pin

CLEAR signal

18- bit up-counter

Pulse width

measurement mode

Frequency

measurement mode

SEG

Edge detector

ECIN Pin

Timer/Event count modes

CDEFGBA

fc/27fc/2

or fc/2

fs/2

TREG1A

22 1 12121

SGP SEG

TC1C TC1S

TC1M

TC6OUT

WGPSCK

SGEDG

TC1CR2

TC1CK

TC1CR1

PWM6/PDO6/PPG6

Figure 8-1 Timer/Counter1

Page 75

8. 18-Bit Timer/Counter (TC1)

8.2 Control

The Timer/counter 1 is controlled by timer/counter 1 control registers (TC1CR1/TC1CR2), an 18-bit timer register

(TREG1A), and an 8-bit internal window gate pulse setting register (TREG1B).

Timer register

TREG1AH

(0012H)

R/W

TREG1AM

(0011H)

R/W

TMP86CH22UG

76543210

−−−−−− TREG1AH (Initial value: ∗∗∗∗ ∗∗00)

76543210

TREG1AM (Initial value: 0000 0000)

TREG1AL

(0010H)

R/W

TREG1B

(0013H)

76543210

TREG1AL (Initial value: 0000 0000)

76543210

Ta Tb (Initial value: 0000 0000)

NORMAL1/2,IDLE1/2 modes

Setting "H" level period of the window

gate pulse

Setting "L" level period of the window

gate pulse

WGPSCK

00 01 10

DV7CK=0 DV7CK=1

(16 - Ta) × 2

(16 - Tb) × 2

/fc

(16 - Ta) × 2

(16 - Tb) × 2

/fs

SLOW1/2,

SLEEP1/2 modes

(16 - Ta) × 2

(16 - Tb) × 2

/fs

R/W

Page 76

Timer/counter 1 control register 1

7 6543210

TC1CR1

(0014H)

TC1C TC1S TC1CK TC1M (Initial value: 1000 1000)

TMP86CH22UG

TC1C

TC1S TC1 start control

TC1CK TC1 source clock select

TC1M TC1 mode select

Counter/overfow flag controll

Clear Counter/overflow flag ( “1” is automatically set after clearing.)

Not clear Counter/overflow flag

00:

Stop and counter clear and overflow flag clear

10:

Star t

*1:

Reserved

NORMAL1/2,IDLE1/2 modes

DV7CK="0" DV7CK="1"

fs/2

fc/2

fc fs

000: 001: 010: 011: 100: 101: 110:

111: External clock (ECIN pin input)

00: 01: 10: 11:

fc fs

fc/2

Timer/Event counter mode Reserved Pulse width measurement mode Frequency measurement mode

SLOW1/2

mode

fs/2

SLEEP1/2

mode

fs/2

R/W

Note 1: fc; High-frequency clock [Hz] fs; Low-frequency clock [Hz] * ; Don’t care Note 2: Writing to the low-byte of the timer register 1A (TREG1AL, TREG1AM), the compare function is inhibited until the high-

byte (TREG1AH) is written. Note 3: Set the mode and source clock, and edge (selection) when the TC1 stops (TC1S=00). Note 4: “fc” can be selected as the source clock only in the timer mode during SLOW mode and in the pulse width measurement

mode during NORMAL 1/2 or IDLE 1/2 mode. Note 5: When a read instruction is executed to the timer register (TREG1A), the counter immediate value, not the register set

value, is read out. Therefore it is impossible to read out the written value of TREG1A. To read the counter value, the read

instruction should be executed when the counter stops to avoid reading unstable value.

Note 6: Set the timer register (TREG1A) to

≥1.

Note 7: When using the timer mode and pulse width measurement mode, set TC1CK (TC1 source clock select) to internal clock. Note 8: When using the event counter mode, set TC1CK (TC1 source clock select) to external clock. Note 9: Because the read value is different from the written value, do not use read-modify-write instructions to TREG1A.

Note 10:fc/2

, fc/23can not be used as source clock in SLOW/SLEEP mode.

Note 11:The read data of bits 7 to 2 in TREG1AH are always “0”. (Data “1” can not be written.)

Page 77

8. 18-Bit Timer/Counter (TC1)

8.2 Control

Timer/Counter 1 control register 2

76543210

TC1CR2

(0015H)

SEG SGP SGEDG WGPSCK TC6OUT "0" (Initial value: 0000 000*)

TMP86CH22UG

SEG

External input clock (ECIN) edge select

SGP Window gate pulse select

SGEDG

WGPSCK

TC6OUT

Window gate pulse interrupt edge select

Window gate pulse source clock select

TC6 output (

PWM6/PDO6/PPG6)

external output select

0:1:Counts at the falling edge

Counts at the both (falling/rising) edges

00:

ECNT input

01:

Internal window gate pulse (TREG1B)

PWM6/PDO6/PPG6 (TC6)output

10:

Reserved

11:

0:1:Interrupts at the falling edge

Interrupts at the falling/rising edges

NORMAL1/2,IDLE1/2 modes

DV7CK="0" DV7CK="1"

00: 01: 10: 11:

/fc

Reserved

/fs

Reserved

0:1:Output to P33

No output to P33

SLOW1/2

mode

/fs

Reserved

Note 1: fc; High-frequency clock [Hz] fs; Low-frequency clock [Hz] *; Don't care Note 2: Set the mode, source clock, and edge (selection) when the TC1 stops (TC1S = 00).

Note 3: If there is no need to use

PWM6/PDO6/PPG6 as window gate pulse of TC1 always write "0" to TC6OUT.

Note 4: Make sure to write TC1CR2 "0" to bit 0 in TC1CR2. Note 5: When using the event counter mode or pulse width measurement mode, set SEG to "0".

SLEEP1/2

mode

/fs

Reserved

R/W

Page 78

TC1 status register

7 6 543210

TC1SR

(0016H)

HECF HEOVF "0" "0" "0" "0" "0" "0" (Initial value: 0000 0000)

TMP86CH22UG

HECF Operating Status monitor

HEOVF Counter overflow monitor

8.3 Function

TC1 has four operating modes. The timer mode of the TC1 is used at warm-up when switching form SLOW mode

to NORMAL2 mode.

8.3.1 Timer mode

In this mode, counting up is performed using the internal clock. The contents of TREGIA are compared with the contents of up-counter. If a match is found, an INTTC1 interrupt is generated, and the counter is cleared. Counting up resumes after the counter is cleared.

Table 8-1 Source clock (internal clock) of Timer/Counter 1

NORMAL1/2, IDLE1/2 Mode

DV7CK = 0 DV7CK = 1

[Hz] fs/215 [Hz] fs/215 [Hz] fs/215 [Hz]

fc/2

fc fc fc (Note) - 62.5 ns - 16.4 ms -

fs fs - - - 30.5 ms - 8 s

0:1:Stop (during Tb) or disable

Under counting (during Ta)

0:1:No overflow

Overflow status

Source Clock Resolution Maximum Time Setting

fs =32.768

kHz

fc = 16 MHz

fs/2

fc/2

SLOW Mode SLEEP Mode fc = 16 MHz

fs/2

--8 ms-2.1 s-

- - 0.5 ms - 131.1 ms -

fs/2

0.52 s 1 s 38.2 h 72.8 h

512 ms 0.98 ms 2.2 min 4.3 min

128 ms 244 ms 0.6 min 1.07 min

Read

only

fs =32.768

kHz

Note: When fc is selected for the source clock in SLOW mode, the lower bits 11 of TREG1A is invalid, and a match of the upper

bits 7 makes interrupts.

Page 79

8. 18-Bit Timer/Counter (TC1)

8.3 Function

Internal clock

TMP86CH22UG

Command Start

Up counter

TREG1A

INTTC1 interrupt

10 2 3 4 n

Figure 8-2 Timing chart for timer mode

8.3.2 Event Counter mode

It is a mode to count up at the falling edge of the ECIN pin input. When using this mode, set TC1CR1<TC1CK> to the external clock and then set TC1CR2<SEG> to “0” (Both edges can not be used).

The countents of TREG1A are compared with the contents of up-counter. If a match is found, an INTTC1 interrupt is generated, and the counter is cleared. Counting up resumes for ECIN pin input edge each after the counter is cleared.

The maximum applied frequency is fc/2 or SLEEP mode . Two or more machine cycles are required for both the “H” and “L” levels of the pulse width.

Start

1n-1 2 3 4 5 6

Match detect

[Hz] in NORMAL 1/2 or IDLE 1/2 mode and fs/24[Hz] in SLOW

Counter clear

ECIN pin input

Up counter

TREG1A

INTTC1 interrupt

10 2 2n-1 n 0 1

Match Detect

Figure 8-3 Event counter mode timing chart

Counter clear

Page 80

8.3.3 Pulse Width Measurement mode

In this mode, pulse widths are counted on the falling edge of logical AND-ed pulse between ECIN pin input (window pulse) and the internal clock. When using this mode, set TC1CR1<TC1CK> to suitable internal clock and then set TC1CR2<SEG> to “0” (Both edges can not be used).

An INTTC1 interrupt is generated when the ECIN input detects the falling edge of the window pulse or both rising and falling edges of the window pulse, that can be selected by TC1CR2<SGEDG>.

The contents of TREG1A should be read while the count is stopped (ECIN pin is low), then clear the counter using TC1CR1<TC1C> (Normally, execute these process in the interrupt program).

When the counter is not cleared by TC1CR1<TC1C>, counting-up resumes from previous stopping value. When up counter is counted up from 3FFFFH to 00000H, an overflow occurs. At that time, TC1SR<HEOVF> is set to “1”. TC1SR<HEOVF> remains the previous data until the counter is required to be cleared by TC1CR1<TC1C>.

Note:In pulse width measurement mode, if TC1CR1<TC1S> is written to "00" while ECIN input is "1", INTTC1 inter-

rupt occurs. According to the following step, when timer counter is stopped, INTTC1 interrupt latch should be cleared to "0".

TMP86CH22UG

Example :

ECIN pin input

TC1STOP :

¦ ¦

DI ; Clear IMF

CLR (EIRL). 7 ; Clear bit7 of EIRL

LD (TC1CR1), 00011010B ; Stop timer couter 1

LD (I L L), 0 1111111B ; C lea r bit 7 of IL L

SET (EIRL). 7 ; Set bit7 of EIRL

EI ; Set IMF

¦ ¦

Note 1: When SGEDG (window gate pulse interrupt edge select) is set to both edges and ECIN pin input is "1" in

the pulse width measurement mode, an INTTC1 interrupt is generated by setting TC1S (TC1 start control)

to "10" (start). Note 2: In the pulse width measurement mode, HECF (operating status monitor) cannot used. Note 3: Because the up counter is counted on the falling edge of logical AND-ed pulse (between ECIN pin input and

the internal clock), if ECIN input becomes falling edge while internal source clock is "H" level, the up

counter stops plus "1".

Count StartCount Start Count Stop

Internal clock

AND-ed pulse (Internal signal)

Up counter

INTTC1 interrupt

TC1CR1<TC1C>

10 2 3 n-2 n-1 n n+1 0 12

Read Clear

Interrupt

Figure 8-4 Pulse width measurement mode timing chart

Page 81

8. 18-Bit Timer/Counter (TC1)

8.3 Function

8.3.4 Frequency Measurement mode

In this mode, the frequency of ECIN pin input pulse is measured. When using this mode, set

TC1CR1<TC1CK> to the external clock.

The edge of the ECIN input pulse is counted during “H” level of the window gate pulse selected by

TC1CR2<SGP>. To use ECNT input as a window gate pulse, TC1CR2<SGP> should be set to “00”.

An INTTC1 interrupt is generated on the falling edge or both the rising/falling edges of the window gate

pulse, that can be selected by TC1CR2<SGEDG>. In the interrupt service program, read the contents of TREG1A while the count is stopped (window gate pulse is low), then clear the counter using TC1CR1<TC1C>. When the counter is not cleared, counting up resumes from previous stopping value.

The window pulse status can be monitored by TC1SR<HECF>.

When up counter is counted up from 3FFFFH to 00000H, an overflow occurs. At that time,

TC1SR<HEOVF> is set to “1”. TC1SR<HEOVF> remains the previous data until the counter is required to be cleared by TC1CR1<TC1C>.

TMP86CH22UG

Using TC6 output (

PWM6/PDO6/PPG6) for the window gate pulse, external output of PWM6/PDO6/PPG6 to

P33 can be controlled using TC1CR2<TC6OUT>. Zero-clearing TC1CR2<TC6OUT> outputs PWM6/

PDO6/PPG6 to P33; setting 1 in TC1CR2<TC6OUT> does not output PWM6/PDO6/PPG6 to P33.

(TC1CR2< operate/stop

When the internal window gate pulse is selected, the window gate pulse is set as follows.

Table 8-2 Internal window gate pulse setting time

The internal window gate pulse consists of “H” level period (Ta) that is counting time and “L” level period

(Tb) that is counting stop time. Ta or Tb can be individually set by TREG1B. One cycle contains Ta + Tb.

TC6OUT> is used to control output to P33 only. Thus, use the timer counter 6 control register to

PWM6/PDO6/PPG6.)

Setting "H" level period of the window

gate pulse

Setting "L" level period of the window

gate pulse

WGPSCK

00 01 10

NORMAL1/2,IDLE1/2 modes

DV7CK=0 DV7CK=1

(16 - Ta) × 2

(16 - Tb) × 2

/fc

(16 - Ta) × 2

(16 - Tb) × 2

/fs

SLOW1/2,

SLEEP1/2 modes

(16 - Ta) × 2

(16 - Tb) × 2

/fs

R/W

Note 1: Because the internal window gate pulse is generated in synchronization with the internal divider, it may be

delayed for a maximum of one cycle of the source clock (WGPSCK) immediately after start of the timer. Note 2: Set the internal window gate pulse when the timer counter is not operating or during the Tb period. When

Tb is overwritten during the Tb period, the update is valid from the next Tb period. Note 3: In case of TC1CR2<SEG> = "1", if window gate pulse becomes falling edge, the up counter stops plus "1"

regardless of ECIN input level. Therefore, if ECIN is always "H" or "L" level, count value becomes "1". Note 4: In case of TC1CR2<SEG> = "0", because the up counter is counted on the falling edge of logical AND-ed

pulse (between ECIN pin input and window gate pulse), if window gate pulse becomes falling edge while

ECIN input is "H" level, the up counter stops plus "1". Therefore, if ECIN input is always "H" level, count

value becomes "1".

Page 82

Table 8-3 Table Setting Ta and Tb (WGPSCK = 10, fc = 16 MHz)

Setting Value Setting time Setting Value Setting time

0 16.38ms 8 8.19ms

1 15.36ms 9 7.17ms

2 14.34ms A 6.14ms

3 13.31ms B 5.12ms

4 12.29ms C 4.10ms

5 11.26ms D 3.07ms

6 10.24ms E 2.05ms

7 9.22ms F 1.02ms

Table 8-4 Table Setting Ta and Tb (WGPSCK = 10, fs = 32.768 kHz)

Setting Valuen Setting time Setting Value Setting time

0 31.25ms 8 15.63ms

1 29.30ms 9 13.67ms

2 27.34ms A 11.72ms

3 25.39ms B 9.77ms

4 23.44ms C 7.81ms

5 21.48ms D 5.86ms

6 19.53ms E 3.91ms

7 17.58ms F 1.95ms

TMP86CH22UG

Page 83

8. 18-Bit Timer/Counter (TC1)

8.3 Function

ECIN pin input

Window gate pulse

AND-ed pulse (Internal signal)

TMP86CH22UG

Up counter

INTTC1 interrupt

TC1CR1<TC1C>

TC1CR2<SEG>

ECIN pin input

Window gate pulse

Up counter

INTTC1 interrupt

TC1CR1<TC1C>

10 2 3 54 1 2 3 5646 0

Read

Clear

a) TC1CR2<SEG> = "0"

2 3 4 5 6 7 8 9 10

12 11

a) TC1CR2<SEG> = "1"

Read

0 12

Clear

2 3 4 5 6 7 8 9 1011

Figure 8-5 Timing chart for the frequency measurement mode (Window gate pulse falling

interrupt)

Page 84

9. 8-Bit TimerCounter (TC5, TC6)

9.1 Configuration

Overflow

fc/2 fc/2 fc/2

fc/2

7 5 3

A B Y C D E F G H

TC6CR

TC6CK

A Y B

16-bit mode

TTREG6

8-bit up-counter

PWREG6

16-bit mode

Clear

16-bit mode

fc/211 or fs/2

TC6 pin

TC6M

TC6S TFF6

PWM mode

TC6S

PDO, PPG mode

Timer, Event Counter mode

PWM, PPG mode

Decode

TFF6

Timer F/F6

TMP86CH22UG

INTTC6 interrupt request

Toggle

Q Set Clear

PDO, PWM, PPG mode

PDO PPG

6/PWM6/ 6 pin

fc/211 or fs/2

fc/2 fc/2 fc/2

fc/2

TC5 pin

TC5M

TC5S TFF5

7 5 3

A B Y C D E F G H

TC5CR

TC5CK

Clear

TTREG5

8-bit up-counter

PWREG5

TC5S

Overflow

PWM mode

PDO mode

Timer, Event Couter mode

PWM mode

Figure 9-1 8-Bit TimerCouter 5, 6

16-bit mode

Decode

TFF5

Set Clear

Timer F/F5

INTTC5 interrupt request

Toggle

PDO5/PWM5/ pin

PDO, PWM mode 16-bit mode

Page 85

9. 8-Bit TimerCounter (TC5, TC6)

9.1 Configuration

9.2 TimerCounter Control

The TimerCounter 5 is controlled by the TimerCounter 5 control register (TC5CR) and two 8-bit timer registers

(TTREG5, PWREG5).

TimerCounter 5 Timer Register

TMP86CH22UG

TTREG5

(001EH)

R/W

PWREG5

(002AH)

R/W

76543210

(I n iti a l va l ue: 1111 1111 )

76543210

(I n iti a l va l ue: 1111 1111 )

Note 1: Do not change the timer register (TTREG5) setting while the timer is running. Note 2: Do not change the timer register (PWREG5) setting in the operating mode except the 8-bit and 16-bit PWM modes while

the timer is running.

TimerCounter 5 Control Register

TC5CR

(001AH)

TFF5 Time F/F5 control

TC5CK Operating clock selection [Hz]

TC5S TC5 start control

TC5M TC5M operating mode select

76543210

TFF5 TC5CK TC5S TC5M (Initial value: 0000 0000)

0:1:Clear

Set

NORMAL1/2, IDLE1/2 mode SLOW1/2

DV7CK = 0 DV7CK = 1

000

001

010

011

100 fs fs fs

101 fc/2 fc/2 –

110 fc fc fc (Note 8)

111 TC5 pin input

0:1:Operation stop and counter clear

Operation start

000:

8-bit timer/event counter mode

001:

8-bit programmable divider output (PDO) mode

010:

8-bit pulse width modulation (PWM) output mode 16-bit mode

011:

(Each mode is selectable with TC6M.) Reserved

1**:

fc/2

fs/2

fc/2

SLEEP1/2

mode

fs/2

–

R/W

Note 1: fc: High-frequency clock [Hz] fs: Low-frequency clock[Hz] Note 2: Do not change the TC5M, TC5CK and TFF5 settings while the timer is running. Note 3: To stop the timer operation (TC5S= 1 → 0), do not change the TC5M, TC5CK and TFF5 settings. To start the timer opera-

tion (TC5S= 0 → 1), TC5M, TC5CK and TFF5 can be programmed.

Note 4: To use the TimerCounter in the 16-bit mode, set the operating mode by programming TC6CR<TC6M>, where TC5M must

be fixed to 011.

Note 5: To use the TimerCounter in the 16-bit mode, select the source clock by programming TC5CK. Set the timer start control

and timer F/F control by programming TC6CR<TC6S> and TC6CR<TFF6>, respectively.

Note 6: The operating clock settings are limited depending on the timer operating mode. For the detailed descriptions, see Table

9-1 and Table 9-2.

Page 86

TMP86CH22UG

Note 7: The timer register settings are limited depending on the timer operating mode. For the detailed descriptions, see Table 9-

Note 8: The operating clock fc in the SLOW or SLEEP mode can be used only as the high-frequency warm-up mode.

Page 87

9. 8-Bit TimerCounter (TC5, TC6)

9.1 Configuration

The TimerCounter 6 is controlled by the TimerCounter 6 control register (TC6CR) and two 8-bit timer registers

(TTREG6 and PWREG6).

TimerCounter 6 Timer Register

TMP86CH22UG

TTREG6

(001FH)

R/W

PWREG6

(002BH)

R/W

76543210

(I n iti a l va l ue: 1111 1111 )

76543210

(I n iti a l va l ue: 1111 1111 )

Note 1: Do not change the timer register (TTREG6) setting while the timer is running. Note 2: Do not change the timer register (PWREG6) setting in the operating mode except the 8-bit and 16-bit PWM modes while

the timer is running.

TimerCounter 6 Control Register

TC6CR

(001BH)

TFF6 Timer F/F6 control

TC6CK Operating clock selection [Hz]

TC6S TC6 start control

TC6M TC6M operating mode select

76543210

TFF6 TC6CK TC6S TC6M (Initial value: 0000 0000)

0:1:Clear

Set

NORMAL1/2, IDLE1/2 mode SLOW1/2

DV7CK = 0 DV7CK = 1

000

001

010

011

100 fs fs fs

101 fc/2 fc/2 –

110 f c f c –

111 TC6 pin input

0:1:Operation stop and counter clear

Operation start

000:

8-bit timer/event counter mode

001:

8-bit programmable divider output (PDO) mode

010:

8-bit pulse width modulation (PWM) output mode

011:

Reserved 16-bit timer/event counter mode

100:

Warm-up counter mode

101:

16-bit pulse width modulation (PWM) output mode

110 :

16-bit PPG mode

111:

fc/2

fs/2

fc/2

SLEEP1/2

mode

fs/2

–

R/W

Note 1: fc: High-frequency clock [Hz] fs: Low-frequency clock [Hz] Note 2: Do not change the TC6M, TC6CK and TFF6 settings while the timer is running. Note 3: To stop the timer operation (TC6S= 1 → 0), do not change the TC6M, TC6CK and TFF6 settings.

To start the timer operation (TC6S= 0 → 1), TC6M, TC6CK and TFF6 can be programmed.

Note 4: When TC6M= 1** (upper byte in the 16-bit mode), the source clock becomes the TC6 overflow signal regardless of the

TC5CK setting.

Note 5: To use the TimerCounter in the 16-bit mode, select the operating mode by programming TC6M, where TC5CR<TC5 M>

must be set to 011.

Page 88

TMP86CH22UG

Note 6: To the TimerCounter in the 16-bit mode, select the source clock by programming TC5CR<TC5CK>. Set the timer start

control and timer F/F control by programming TC6S and TFF6, respectively.

Note 7: The operating clock settings are limited depending on the timer operating mode. For the detailed descriptions, see Table

9-1 and Table 9-2.

Note 8: The timer register settings are limited depending on the timer operating mode. For the detailed descriptions, see Table 9-

Note 9: To use the PDO, PWM or PPG mode, a pulse is not output from the timer output pin when TC1CR2<TC6OUT> is set to 1.

To output a pulse from the timer output pin, clear TC1CR2<TC6OUT> to 0.

Table 9-1 Operating Mode and Selectable Source Clock (NORMAL1/2 and IDLE1/2 Modes)

Operating mode

8-bit timer ΟΟΟΟ–––––

fc/2

fs/2

fc/2

fs fc/2 fc

TC5

pin input

TC6

pin input

8-bit event counter –––––––Ο

8-bit PDO ΟΟΟΟ–––––

8-bit PWM ΟΟΟΟΟΟΟ ––

16-bit timer ΟΟΟΟ –––––

16-bit event counter –––––––Ο –

Warm-up counter ––––Ο ––––

16-bit PWM ΟΟΟΟΟΟΟΟ–

16-bit PPG ΟΟΟΟ–––Ο –

Note 1: For 16-bit operations (16-bit timer/event counter, warm-up counter, 16-bit PWM and 16-bit PPG), set its source clock on

lower bit (TC5CK).

Ο : Available source clock

Note 2:

Table 9-2 Operating Mode and Selectable Source Clock (SLOW1/2 and SLEEP1/2 Modes)

Operating mode

8-bit timer Ο ––––––––

8-bit event counter –––––––ΟΟ

8-bit PDO Ο ––––––––

8-bit PWM Ο –––Ο ––––

16-bit timer Ο ––––––––

16-bit event counter –––––––Ο –

Warm-up counter ––––––Ο ––

16-bit PWM Ο –––Ο ––Ο –

16-bit PPG Ο ––––––Ο –

fc/2

fs/2

fc/2

fs fc/2 fc

TC5

pin input

TC6

pin input

Note1:

For 16-bit operations (16-bit timer/event counter, warm-up counter, 16-bit PWM and 16-bit PPG), set its source clock on lower bit (TC5CK).

Ο : Available source clock

Note2:

Page 89

TOSHIBA TMP86CH22UG Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual

TMP86CH22UG

1.1 Features

1.2 Pin Assignment

1.3 Block Diagram

1.4 Pin Names and Functions

2. Operational Description

2.1 CPU Core Functions

2.1.1 Memory Address Map

2.1.2 Program Memory (MaskROM)

2.2 System Clock Controller

2.1.3 Data Memory (RAM)

2.2.1 Clock Generator

2.2.2 Timing Generator

2.2.2.1 Configuration of timing generator

2.2.2.2 Machine cycle

2.2.3 Operation Mode Control Circuit

2.2.3.1 Single-clock mode

(1) NORMAL1 mode

(2) IDLE1 mode

(3) IDLE0 mode

2.2.3.2 Dual-clock mode

(1) NORMAL2 mode

(2) SLOW2 mode

(3) SLOW1 mode

(4) IDLE2 mode

(5) SLEEP1 mode

(6) SLEEP2 mode

(7) SLEEP0 mode

2.2.3.3 STOP mode

2.2.4 Operating Mode Control

2.2.4.1 STOP mode

(1) Level-sensitive release mode (RELM = “1”)

(2) Edge-sensitive release mode (RELM = “0”)

2.2.4.2 IDLE1/2 mode and SLEEP1/2 mode

(1) Normal release mode (IMF = “0”)

(2) Interrupt release mode (IMF = “1”)

2.2.4.3 IDLE0 and SLEEP0 modes (IDLE0, SLEEP0)

2.2.4.4 SLOW mode

(1) Switching from NORMAL2 mode to SLOW1 mode

(2) Switching from SLOW1 mode to NORMAL2 mode

2.3 Reset Circuit

2.3.1 External Reset Input

2.3.2 Address trap reset

2.3.3 Watchdog timer reset

2.3.4 System clock reset

3. Interrupt Control Circuit

3.1 Interrupt latches (IL19 to IL2)

3.2 Interrupt enable register (EIR)

3.2.1 Interrupt master enable flag (IMF)

3.2.2 Individual interrupt enable flags (EF19 to EF4)

3.3 Interrupt Sequence

3.3.1 Interrupt acceptance processing is packaged as follows.

3.3.2 Saving/restoring general-purpose registers

3.3.2.1 Using PUSH and POP instructions

3.3.2.2 Using data transfer instructions

3.3.3 Interrupt return

3.4 Software Interrupt (INTSW)

3.4.1 Address error detection

3.4.2 Debugging

3.5 Undefined Instruction Interrupt (INTUNDEF)

3.6 Address Trap Interrupt (INTATRAP)

3.7 External Interrupts

4. Special Function Register (SFR)

4.1 SFR

4.2 DBR

5. I/O Ports

5.1 Port P1 (P17 to P10)

5.2 Port P2 (P22 to P20)

5.3 Port P3 (P37, P34 to P33)

5.4 Port P5 (P57 to P50)

5.5 Port P6 (P64 to P61)

5.6 Port P7 (P76 to P70)

6. Watchdog Timer (WDT)

6.1 Watchdog Timer Configuration

6.2 Watchdog Timer Control

6.2.1 Malfunction Detection Methods Using the Watchdog Timer