PMS154B-M10_技术文档

PMS154B

8bit OTP Type IO Controller

Datasheet

Version 1.02 – Nov. 27, 2018

6F-6, No.1, Sec. 3, Gongdao 5th Rd., Hsinchu City 30069, Taiwan, R.O.C.

TEL: 886-3-572-8688  www.padauk.com.tw

PMS154B

8bit IO-Type Controller

IMPORTANT NOTICE

PADAUK Technology reserves the right to make changes to its products or to terminate

production of its products at any time without notice. Customers are strongly

recommended to contact PADAUK Technology for the latest information and verify

whether the information is correct and complete before placing orders.

PADAUK Technology products are not warranted to be suitable for use in life-support

applications or other critical applications. PADAUK Technology assumes no liability for

such applications. Critical applications include, but are not limited to, those that may

involve potential risks of death, personal injury, fire or severe property damage.

PADAUK Technology assumes no responsibility for any issue caused by a customer’s

product design. Customers should design and verify their products within the ranges

guaranteed by PADAUK Technology. In order to minimize the risks in customers’

products, customers should design a product with adequate operating safeguards.

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PMS154B

8bit IO-Type Controller

Table of Contents

1. Features...............................................................................................................................9

1.1.

1.2.

1.3.

1.4.

Special Features ...................................................................................................................9

System Features...................................................................................................................9

CPU Features .......................................................................................................................9

Package Information .............................................................................................................9

2. General Description and Block Diagram ........................................................................10

3. Pin Definition and Functional Description......................................................................11

4. Device Characteristics .....................................................................................................16

4.1.

4.2.

4.3.

4.4.

4.5.

4.6.

4.7.

4.8.

4.9.

DC/AC Characteristics ........................................................................................................16

Absolute Maximum Ratings.................................................................................................17

Typical IHRC Frequency vs. VDD (calibrated to 16MHz).....................................................18

Typical ILRC Frequency vs. VDD........................................................................................18

Typical IHRC Frequency vs. Temperature (calibrated to 16MHz)........................................19

Typical ILRC Frequency vs. Temperature ...........................................................................19

Typical Operating Current vs. VDD and CLK=IHRC/n.........................................................20

Typical Operating Current vs. VDD and CLK=ILRC/n..........................................................20

Typical Operating Current vs. VDD and CLK=32KHz EOSC / n..........................................21

4.10. Typical Operating Current vs. VDD and CLK=1MHz EOSC / n............................................21

4.11. Typical Operating Current vs. VDD and CLK=4MHz EOSC / n............................................22

4.12. Typical IO pull high resistance.............................................................................................22

4.13. Typical IO input high/low threshold voltage (V_IH/V_IL) ............................................................23

4.14. Typical IO driving current (I_OH) and sink current (I_OL) ...........................................................23

4.15. Typical power down current (I_PD) and power save current (I_PS)............................................24

5. Functional Description.....................................................................................................26

5.1.

5.2.

Program Memory – OTP .....................................................................................................26

Boot Up...............................................................................................................................26

5.2.1. Timing charts for reset conditions.............................................................................27

5.3.

5.4.

Data Memory – SRAM ........................................................................................................28

Oscillator and clock.............................................................................................................28

5.4.1. Internal High RC oscillator and Internal Low RC oscillator ......................................28

5.4.2. IHRC calibration .....................................................................................................28

5.4.3. IHRC Frequency Calibration and System Clock......................................................29

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PMS154B

8bit IO-Type Controller

5.4.4. External Crystal Oscillator.......................................................................................30

5.4.5. System Clock and LVR levels.................................................................................32

5.5.

5.6.

5.7.

5.8.

16-bit Timer (Timer16).........................................................................................................32

Watchdog Timer..................................................................................................................34

Interrupt Controller ..............................................................................................................35

Power-Save and Power-Down ............................................................................................38

5.8.1. Power-Save mode (“stopexe”)................................................................................38

5.8.2. Power-Down mode (“stopsys”)................................................................................39

5.8.3. Wake-up.................................................................................................................40

5.9.

IO Pins................................................................................................................................41

5.10. Reset ..................................................................................................................................42

5.10.1. Reset......................................................................................................................42

5.10.2. LVR reset ...............................................................................................................42

5.11. VDD/2 Bias Voltage Generator............................................................................................42

5.12. Comparator.........................................................................................................................43

5.12.1. Internal reference voltage (V_{internal R})........................................................................44

5.12.2. Using the comparator .............................................................................................46

5.12.3. Using the comparator and band-gap 1.20V ............................................................47

5.13. 8-bit Timer with PWM generation (Timer2, Timer3).............................................................48

5.13.1. Using the Timer2 to generate periodical waveform .................................................49

5.13.2. Using the Timer2 to generate 8-bit PWM waveform................................................50

5.13.3. 51

5.13.4. Using the Timer2 to generate 6-bit PWM waveform................................................52

5.14. 11-bit PWM generation........................................................................................................53

5.14.1. PWM Waveform .....................................................................................................53

5.14.2. Hardware and Timing Diagram ...............................................................................53

5.14.3. Equations for 11-bit PWM Generator......................................................................54

6. IO Registers.......................................................................................................................55

6.1.

6.2.

6.3.

6.4.

6.5.

6.6.

6.7.

6.8.

6.9.

ACC Status Flag Register (flag), IO address = 0x00 ...........................................................55

Stack Pointer Register (sp), IO address = 0x02...................................................................55

Clock Mode Register (clkmd), IO address = 0x03................................................................55

Interrupt Enable Register (inten), IO address = 0x04...........................................................56

Interrupt Request Register (intrq), IO address = 0x05 .........................................................56

Timer 16 mode Register (t16m), IO address = 0x06............................................................57

External Oscillator setting Register (eoscr, write only), IO address = 0x0a..........................57

Interrupt Edge Select Register (integs), IO address = 0x0c.................................................58

Port A Digital Input Enable Register (padier), IO address = 0x0d ........................................58

6.10. Port B Digital Input Enable Register (pbdier), IO address = 0x0e ........................................58

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PMS154B

8bit IO-Type Controller

6.11. Port A Data Registers (pa), IO address = 0x10 ...................................................................58

6.12. Port A Control Registers (pac), IO address = 0x11..............................................................58

6.13. Port A Pull-High Registers (paph), IO address = 0x12.........................................................58

6.14. Port B Data Registers (pb), IO address = 0x14 ...................................................................59

6.15. Port B Control Registers (pbc), IO address = 0x15..............................................................59

6.16. Port B Pull-High Registers (pbph), IO address = 0x16.........................................................59

6.17. MISC Register (misc), IO address = 0x08 ...........................................................................59

6.18. Timer2 Control Register (tm2c), IO address = 0x1c.............................................................60

6.19. Timer2 Counter Register (tm2ct), IO address = 0x1d ..........................................................60

6.20. Timer2 Scalar Register (tm2s), IO address = 0x17..............................................................60

6.21. Timer2 Bound Register (tm2b), IO address = 0x09 .............................................................61

6.22. Timer3 Control Register (tm3c), IO address = 0x32 ............................................................61

6.23. Timer3 Counter Register (tm3ct), IO address = 0x33 ..........................................................61

6.24. Timer3 Scalar Register (tm3s), IO address = 0x34..............................................................62

6.25. Timer3 Bound Register (tm3b), IO address = 0x35 .............................................................62

6.26. Comparator Control Register (gpcc), IO address = 0x18.....................................................62

6.27. Comparator Selection Register (gpcs), IO address = 0x19..................................................63

6.28. PWMG0 control Register (pwmg0c), IO address = 0x20 .....................................................63

6.29. PWMG0 Scalar Register (pwmg0s), IO address = 0x21......................................................63

6.30. PWMG0 Counter Upper Bound High Register (pwmg0cubh), IO address = 0x24 ...............63

6.31. PWMG0 Counter Upper Bound Low Register (pwmg0cubl), IO address = 0x25 .................64

6.32. PWMG0 Duty Value High Register (pwmg0dth), IO address = 0x22 ...................................64

6.33. PWMG0 Duty Value Low Register (pwmg0dtl), IO address = 0x23 .....................................64

7. Instructions .......................................................................................................................65

7.1.

7.2.

7.3.

7.4.

7.5.

7.6.

7.7.

7.8.

7.9.

Data Transfer Instructions...................................................................................................66

Arithmetic Operation Instructions ........................................................................................69

Shift Operation Instructions .................................................................................................71

Logic Operation Instructions................................................................................................72

Bit Operation Instructions....................................................................................................74

Conditional Operation Instructions.......................................................................................76

System control Instructions .................................................................................................78

Summary of Instructions Execution Cycle ...........................................................................79

Summary of affected flags by Instructions...........................................................................80

7.10. BIT definition.......................................................................................................................80

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PMS154B

8bit IO-Type Controller

8. Code Options ....................................................................................................................81

9. Special Notes ....................................................................................................................82

9.1.

9.2.

Warning...............................................................................................................................82

Using IC..............................................................................................................................82

9.2.1. IO pin usage and setting.........................................................................................82

9.2.2. Interrupt..................................................................................................................83

9.2.3. System clock switching...........................................................................................83

9.2.4. Watchdog ...............................................................................................................83

9.2.5. TIMER time out.......................................................................................................84

9.2.6. IHRC.......................................................................................................................84

9.2.7. LVR ........................................................................................................................84

9.2.8. Program writing ......................................................................................................84

9.3.

Using ICE............................................................................................................................85

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PMS154B

8bit IO-Type Controller

Revision History:

Revision

Date

Description

0.00

2016/08/09 Preliminary version

1. Add Section 1.4: PMS154B-1J16A & PMS154B-M10 Package Information

2. Add Chapter 3: MSOP10 & QFN pin assignment and description

1. Updated company address & Tel No.

0.01

2016/11/23

2. Amend Section 1.1, 1.2, 1.3

3. Add PMS154B-S08 & PMS154B-U06 Package Information

4. Add Chapter 3: SOP8 & SOT23-6 pin assignment and description

5. Open 32KHz EOSC mode

6. Amend Section 4.1 DC/AC Characteristics: V_IH/ V_IL

7. Amend Section 4.3 to Section 4.14

8. Add Section 4.15 Typical power down current (I_PD) and power save current (I_PS)

9. Add Section 5.2.1 Timing charts for reset conditions

10. Amend Table 2: Three Oscillator Circuits provided by PMS154B

11. Amend Section 5.4.3, 5.4.4 and 5.4.5

12. Amend Section 5.6 Watchdog Timer

13. Amend Section 5.7 Interrupt Controller

14. Amend Section 5.8.1, 5.8.2 and 5.8.3

15. Amend Table 6: Differences in wake-up sources between Power-Save mode

and Power-Down mode

16. Amend Fig. 9: Hardware diagram of comparator

17. Amend Section 5.12.2 and 5.12.3

18. Amend Fig. 17: Hardware Diagram of 11-bit PWM Generator 0 (PWMG0)

19. Amend Section 5.14.3 Equations for 11-bit PWM Generator

20. Amend Section 6.3 Clock Mode Register

1.02

2018/11/27

21. Amend Section 6.9 Port A Digital Input Enable Register

22. Amend Section 6.10 Port B Digital Input Enable Register

23. Amend Section 6.17 MISC Register

24. Delete Section 6.18 MISC2 Register

25. Amend Section 6.27Comparator Selection Register

26. Amend Section 6.29 PWMG0 Scalar Register

27. Amend Section 6.31 PWMG0 Counter Upper Bound Low Register

28. Delete the Symbol “pc0” in Chapter 7

29. Amend Section 7.8 Summary of Instructions Execution Cycle and delete 9.2.8

30. Amend the instruction “cneqsn a, I” in Section 7.9

31. Move Section 9.2.9 BIT definition to Section 7.10

32. Add Chapter 8 Code Options

33. Updated the link in Section 9.1

34. Amend Section 9.2.1 IO pin usage and setting

35. Amend Section 9.2.5 TIMER time out

36. Add Section 9.2.6 IHRC

37. Amend 9.2.7 and 9.2.8

38. Amend 9.3 Using ICE

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PMS154B

8bit IO-Type Controller

Major Differences between PMS154 and PMS154B

Item

Function

PMS154

PMS154B

1

Operating voltage range

2.2V ~ 3.6V

2.2V ~ 5.5V

4.0V, 3.5V, 3.0V, 2.75V,

2.5V, 2.2V, 2.0V, 1.8V

2

3

LVR levels

2.75V, 2.5V, 2.2V

Watchdog timeout period

4096, 16384, 65536, 262144T_ILRC8192, 16384, 65536, 262144T_ILRC

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PMS154B

8bit IO-Type Controller

1. Features

1.1. Special Features

 General purpose series

 Not supposed to use in AC RC step-down powered or high EFT requirement applications.

PADAUK assumes no liability if such kind of applications can not pass the safety regulation tests.

 Operating temperature range: -20°C ~ 70°C

1.2. System Features

 2KW OTP program memory

 128 Bytes data RAM

 One hardware 16-bit timer

 Two hardware 8-bit timer with PWM generator

 One hardware 11-bit PWM generator

 Provide one hardware comparator

 14 IO pins with optional pull-high resistor

 Three different IO driving capability groups to meet different application requirement

 Optional IO driving capability for each port: normal drive and low drive

 Every IO pin can be configured to enable wake-up function

 Built-in half VDD bias voltage generator to provide maximum 4x10 dots LCD display

 Clock sources: External crystal oscillator, internal high RC oscillator and internal low RC oscillator

 For every wake-up enabled IO, two optional wake-up speed are supported: normal and fast

 Eight levels of LVR: 4.0V, 3.5V, 3.0V, 2.75V, 2.5V, 2.2V, 2.0V, 1.8V

 Two external interrupt pins

1.3. CPU Features

 One processing unit operating mode

 Most instructions are 1T execution cycle

 Programmable stack pointer and adjustable stack level

 Direct and indirect addressing modes for data access. Data memories are available for use as an index pointer of

Indirect addressing mode

 IO space and memory space are independent

1.4. Package Information

 PMS154B-S16: SOP16 (150mil)

 PMS154B-D16: DIP16 (300mil)

 PMS154B-1J16A: QFN3*3-16pin (0.5 pitch)

 PMS154B-S14: SOP14 (150mil)

 PMS154B-M10: MSOP10 (118mil)

 PMS154B-S08: SOP8 (150mil)

 PMS154B-U06: SOT23-6 (60mil)

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PMS154B

8bit IO-Type Controller

2. General Description and Block Diagram

The PMS154B is an IO-Type, fully static, OTP-based CMOS 8-bit microcontroller; it employs RISC architecture

and most the instructions are executed in one cycle except that few instructions are two cycles that handle

indirect memory access. 2KW OTP program memory and 128 bytes data SRAM are inside, one hardware 16-bit

timer, two hardware 8-bit timers with PWM generation (Timer2, Timer3) and one hardware 11-bit timers with

PWM generation (PWMG0) is also included, PMS154B also supports one hardware comparator and VDD/2 bias

voltage generator for LCD display application.

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PMS154B

8bit IO-Type Controller

3. Pin Definition and Functional Description

PB4/TM2PWM/PG0PWM

PB5/TM3PWM/PG0PWM

PB6/TM3PWM/CIN2-

PB7/TM3PWM/CIN3-

VDD

PB3

1

2

3

4

5

6

7

8

16

15

14

13

12

PB2/TM2PWM

PB1

PB0/INT1/COM1

GND

PA7/X1

11 PA0/INT0/COM2/CO/PG0PWM

PA6/X1

PA4/COM3/CIN+/CIN4-

10

9

PA5/PRST#

PA3/TM2PWM/COM4/CIN1-

PMS154B-S16: SOP16 (150mil)

PMS154B-D16: DIP16 (300mil)

PB5/TM3PWM/PG0PWM

PB6/TM3PWM/CIN2-

PB7/TM3PWM/CIN3-

VDD

PB2/TM2PWM

1

2

3

4

5

6

7

14

13

12

11

10

9

PB1

PB0/INT1/COM1

GND

PA7/X1

PA0/INT0/COM2/CO/PG0PWM

PA4/COM3/CIN+/CIN4-

PA3/TM2PWM/COM4/CIN1-

PA6/X1

PA5/PRST#

8

PMS154B-S14: SOP14(150mil)

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PMS154B

8bit IO-Type Controller

PMS154B-M10: MSOP10 (118mil)

Pin & Buffer

Type

Pin Name

Description

This pin can be used as:

(1) Bit 7 of port A. It can be configured as digital input or two-state output, with

pull-up resistor by software independently

IO

PA7 /

X1

ST /

(2) X1 when crystal oscillator is used

CMOS /

Analog

When this pin is configured as crystal oscillator function, please use bit 7 of

register padier to disable the digital input to prevent current leakage. This pin can

be used to wake-up system during sleep mode; however, wake-up function is also

disabled if bit 7 of padier register is “0”.

This pin can be used as:

(1) Bit 6 of port A. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

PA6 /

X2

ST /

(2) X2 when crystal oscillator is used.

CMOS /

Analog

When this pin is configured as crystal oscillator function, please use bit 6 of

register padier to disable the digital input to prevent current leakage. This pin can

be used to wake-up system during sleep mode; however, wake-up function is also

disabled if bit 6 of padier register is “0”.

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PMS154B

8bit IO-Type Controller

Pin & Buffer

Type

Pin Name

Description

This pin can be used as:

(1) Bit 5 of port A. It can be configured as digital input or open-drain output, with

pull-up resistor.

IO

PA5 /

(2) Hardware reset.

ST /

PRST#

This pin can be used to wake-up system during sleep mode; however, wake-up

function is also disabled if bit 5 of padier register is “0”.

Please put 33Ω resistor in series to have high noise immunity when this pin is in

input mode.

CMOS

This pin can be used as:

(1) Bit 4 of port A. It can be configured as digital input or two-state output, with

pull-up resistor by software independently

IO

PA4 /

CIN+ /

COM3 /

CIN4-

(2) Plus input source of comparator.

ST /

(3) Minus input source 4 of comparator.

CMOS /

Analog

(4) COM3 to provide (1/2 V_DD) for LCD display

When this pin is configured as analog input, please use bit 4 of register padier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 4 of padier register is “0”.

This pin can be used as:

(1) Bit 3 of port A. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

PA3 /

TM2PWM /

COM4 /

CIN1-

(2) Minus input source 1 of comparator.

ST /

(3) Output of 8-bit Timer2 (TM2)

CMOS /

Analog

(4) COM4 to provide (1/2 V_DD) for LCD display

When this pin is configured as analog input, please use bit 3 of register padier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 3 of padier register is “0”.

This pin can be used as:

(1) Bit 0 of port A. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

(2) External interrupt line 0. Both rising edge and falling edge are accepted to

request interrupt service.

PA0 /

INT0 /

IO

ST /

(3) Output of comparator

PG0PWM /

CO /

CMOS /

Analog

(4) Output of 11-bit PWM generator PWMG0

(5) COM2 to provide (1/2 V_DD) for LCD display

COM2

When this pin is configured as analog input, please use bit 0 of register padier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 0 of padier register is “0”.

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PMS154B

8bit IO-Type Controller

Pin & Buffer

Type

Pin Name

Description

This pin can be used as:

(1) Bit 7 of port B. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

PB7 /

TM3PWM /

CIN3-

(2) Minus input source 3 of comparator.

ST /

(3) Output of 8-bit timer Timer3 (TM3)

CMOS /

Analog

When this pin is configured as analog input, please use bit 7 of register pbdier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 7 of pbdier register is “0”.

This pin can be used as:

(1) Bit 6 of port B. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

PB6 /

TM3PWM /

CIN2-

(2) Minus input source 2 of comparator.

ST /

(3) Output of 8-bit timer Timer3 (TM3)

CMOS /

Analog

When this pin is configured as analog input, please use bit 6 of register pbdier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 6 of pbdier register is “0”.

This pin can be used as:

(1) Bit 5 of port B. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

PB5 /

(2) Output of 8-bit timer Timer3 (TM3)

ST /

TM3PWM /

PG0PWM

(3) Output of 11-bit PWM generator PWMG0

CMOS /

Analog

When this pin is configured as analog input, please use bit 5 of register pbdier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 5 of pbdier register is “0”.

This pin can be used as:

(1) Bit 4 of port B. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

PB4 /

(2) Output of 8-bit timer Timer2 (TM2)

ST /

TM2PWM /

PG0PWM

(3) Output of 11-bit PWM generator PWMG0

CMOS /

Analog

When this pin is configured as analog input, please use bit 4 of register pbdier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 4 of pbdier register is “0”.

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PMS154B

8bit IO-Type Controller

Pin & Buffer

Type

Pin Name

Description

This pin can be used as:

(1) Bit 3 of port B. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

ST /

PB3

When this pin is configured as analog input, please use bit 3 of register pbdier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 3 of pbdier register is “0”.

CMOS /

This pin can be used as:

(1) Bit 2 of port B. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

PB2 /

ST /

(2) Output of 8-bit timer Timer2 (TM2)

TM2PWM

CMOS /

Analog

When this pin is configured as analog input, please use bit 2 of register pbdier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 2 of pbdier register is “0”.

This pin can be used as:

(1) Bit 1 of port B. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

ST /

PB1

When this pin is configured as analog input, please use bit 1 of register pbdier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 1 of pbdier register is “0”.

CMOS /

Analog

This pin can be used as:

(1) Bit 0 of port A. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

IO

(2) External interrupt line 1. Both rising edge and falling edge are accepted to

request interrupt service.

PB0 /

INT1 /

COM1

ST /

CMOS /

Analog

(3) COM1 to provide (1/2 V_DD) for LCD display

When this pin is configured as analog input, please use bit 0 of register pbdier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 0 of pbdier register is “0”.

VDD

GND

Positive power

Ground

Notes: IO: Input/ Output; ST: Schmitt Trigger input; Analog: Analog input pin; CMOS: CMOS voltage level

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PMS154B

8bit IO-Type Controller

4. Device Characteristics

4.1. DC/AC Characteristics

All data are acquired under the conditions of V_DD=3.3V, f_SYS=2MHz unless noted.

Symbol

V_DD

Description

Operating Voltage

Min

2.2*

-5

Typ

Max

5.5

5

Unit

V

Conditions(Ta=25^oC)

* Subject to LVR tolerance

Low Voltage Reset tolerance

%

LVR%

System clock (CLK)* =

IHRC/2

0

8M

4M

2M

V_DD≧ 3.5V

V_DD≧ 2.5V

V_DD≧ 2.2V

IHRC/4

f_SYS

Hz

IHRC/8

ILRC

70K

0.3

12

V_DD= 3V

f_SYS=IHRC/16=1MIPS@3V

f_SYS=ILRC=70KHz@3V

f_SYS=EOSC=32KHz@3V

mA

uA

I_OP

I_PD

I_PS

Operating Current

10

Power Down Current

(by stopsys command)

Power Save Current

(by stopexe command)

*Disable IHRC

0.5

uA

f_SYS= 0Hz, V_DD=3.3V

5

uA

V_DD=3.3V

0.2V_DD

0.1V_DD

V_DD

PA5

V_IL

V_IH

Input low voltage for IO lines

0

Others IO

V

Input high voltage for IO lines

IO lines sink current (normal)

*PA0,PA3,PA4,PB2,PB5,PB6

*PA6,PA7,PB0,PB1,PB3,PB4,PB7

*PA5

0.7 V_DD

10

6

mA V_DD=3.3V, V_OL=0.33V

I_OL

5

IO lines sink current (low)

*PA5

5

2

*Others

IO lines drive current (normal)

IO lines drive current (low)

Input voltage

-5

I_OH

V_IN

mA V_DD=3.3V, V_OH=2.97V

V

-1.6

-0.3

VDD+0.3

1

V_DD+0.3≧V_IN≧ -0.3

mA

I_{INJ (PIN)}Injected current on pin

R_PH

Pull-high Resistance

200

16*

KΩ V_DD=3.3V

@25^oC

15.84*

15.20*

16.16*

16.80*

f_IHRC

Frequency of IHRC after calibration *

MHz

V

_DD=2V~5.5V,

16*

-20^oC <Ta<70^oC*

V_DD= 3.3V

t_INT

Interrupt pulse width

30

ns

V

In power-down mode

V_DR

RAM data retention voltage*

1.5

Symbol

Description

Min

Typ

Max

Unit

T_ILRC

Conditions(Ta=25^oC)

misc[1:0]=00 (default)

misc[1:0]=01

8192

t_WDT

Watchdog timeout period

16384

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PMS154B

8bit IO-Type Controller

65536

misc[1:0]=10

misc[1:0]=11

262144

System boot-up period from

power-on for Normal boot-up

System boot-up period from

power-on for Fast boot-up

Wake-up time period for fast

wake-up

47

780

45

ms

us

t_SBP

@ V_DD=5V

Where T_ILRCis the time

period of ILRC

t_WUP

T_ILRC

Wake-up time period for normal

wake-up

3000

t_RST

External reset pulse width

120

us

mV

V

CPos Comparator offset*

-

±10

±20

VDD-1.5

500

CPcm Comparator input common mode*

CPspt Comparator response time**

0

100

2.5

20

ns

Both rising and falling

V_DD= 3.3V

Stable time to change comparator

CPmc

mode

7.5

us

CPcs Comparator current consumption

uA

*These parameters are for design reference, not tested for every chip.

4.2. Absolute Maximum Ratings



Supply Voltage ............................................

2.2V ~ 5.5V (Maximum Rating: 5.5V)

*If V_DDis over the maximum rating, it may lead to a permanent damage of IC.



Input Voltage …………………………………..

Operating Temperature ………………………

Storage Temperature …………………………

Junction Temperature ………………………..

-0.3V ~ V_DD+ 0.3V

-20°C ~ 70°C

-50°C ~ 125°C

150°C

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4.3. Typical IHRC Frequency vs. VDD (calibrated to 16MHz)

4.4. Typical ILRC Frequency vs. VDD

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4.5. Typical IHRC Frequency vs. Temperature (calibrated to 16MHz)

4.6. Typical ILRC Frequency vs. Temperature

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4.7. Typical Operating Current vs. VDD and CLK=IHRC/n

Conditions: ON: IHRC; OFF: Band-gap, LVR, T16 modules, ILRC modules;

IO: PA0:0.5Hz output toggle and no loading, others: input and no floating

4.8. Typical Operating Current vs. VDD and CLK=ILRC/n

Conditions: ON: ILRC; OFF: Band-gap, LVR, T16 modules, IHRC modules;

IO: PA0:0.5Hz output toggle and no loading, others: input and no floating

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8bit IO-Type Controller

4.9. Typical Operating Current vs. VDD and CLK=32KHz EOSC / n

Conditions: ON: EOSC; OFF: Band-gap, LVR, T16 modules, IHRC, ILRC modules;

IO: PA0:0.5Hz output toggle and no loading, others: input and no floating

4.10.Typical Operating Current vs. VDD and CLK=1MHz EOSC / n

Conditions: ON: EOSC; OFF: Band-gap, LVR, T16 modules, IHRC, ILRC modules;

IO: PA0:0.5Hz output toggle and no loading, others: input and no floating

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4.11.Typical Operating Current vs. VDD and CLK=4MHz EOSC / n

Conditions: ON: EOSC; OFF: Band-gap, LVR, T16 modules, IHRC, ILRC modules;

IO: PA0:0.5Hz output toggle and no loading, others: input and no floating

4.12.Typical IO pull high resistance

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8bit IO-Type Controller

4.13.Typical IO input high/low threshold voltage (V_IH/V_IL)

4.14.Typical IO driving current (I_OH) and sink current (I_OL)

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4.15.Typical power down current (I_PD) and power save current (I_PS)

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8bit IO-Type Controller

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8bit IO-Type Controller

5. Functional Description

5.1. Program Memory – OTP

The OTP (One Time Programmable) program memory is used to store the program instructions to be

executed. The OTP program memory may contains the data, tables and interrupt entry. After reset, the initial

address 0x000 is reserved for system using, so the program will start from 0x001 which is GOTO FPPA0

instruction usually. The interrupt entry is 0x010 if used, the last 16 addresses are reserved for system using,

like checksum, serial number, etc. The OTP program memory for PMS154B is a 2KW that is partitioned as

Table 1. The OTP memory from address 0x7E8 to 0x7FF is for system using, address space from 0x002 to

0x00F and from 0x011 to 0x7E7 is user program space.

Address

0x000

0x001

0x002

•

Function

System Using

GOTO FPPA0 instruction

User program

•

0x00F

0x010

0x011

•

User program

Interrupt entry address

User program

•

0x7E7

0x7E8

•

User program

System Using

•

0x7FF

System Using

Table 1: Program Memory Organization

5.2. Boot Up

POR (Power-On-Reset) is used to reset PMS154B when power up. The boot up time can be optional fast or

normal. Time for fast boot-up is about 45 ILRC clock cycles whereas 3000 ILRC clock cycles for normal

boot-up. Customer must ensure the stability of supply voltage after power up no matter which option is

chosen, the power up sequence is shown in the Fig. 1 and t_SBPis the boot up time.

VDD

t

SBP

POR

Program

Execution

Boot up from Power-On Reset

Fig. 1 Power Up Sequence

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5.2.1. Timing charts for reset conditions

LVR level

VDD

LVR

SBP

t

Program

Execution

Boot up from LVR detection

VDD

t

SBP

WD

Time Out

Program

Execution

Boot up from Watch Dog Time Out

VDD

Reset#

t

SBP

Program

Execution

Boot up from Reset Pad reset

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8bit IO-Type Controller

5.3. Data Memory – SRAM

The access of data memory can be byte or bit operation. Besides data storage, the SRAM data memory is

also served as data pointer of indirect access method and the stack memory.

The stack memory is defined in the data memory. The stack pointer is defined in the stack pointer register;

the depth of stack memory of each processing unit is defined by the user. The arrangement of stack memory

fully flexible and can be dynamically adjusted by the user.

For indirect memory access mechanism, the data memory is used as the data pointer to address the data

byte. All the data memory could be the data pointer; it’s quite flexible and useful to do the indirect memory

access. All the 128 bytes data memory of PMS154B can be accessed by indirect access mechanism.

5.4. Oscillator and clock

There are three oscillator circuits provided by PMS154B: external crystal oscillator (EOSC), internal high RC

oscillator (IHRC) and internal low RC oscillator (ILRC), and these three oscillators are enabled or disabled by

registers eoscr.7, clkmd.4 and clkmd.2 independently. User can choose one of these three oscillators as

system clock source and use clkmd register to target the desired frequency as system clock to meet different

applications.

Oscillator Module

EOSC

Enable / Disable

eoscr.7

IHRC

clkmd.4

ILRC

clkmd.2

Table2: Three Oscillator Circuits provided by PMS154B

5.4.1. Internal High RC oscillator and Internal Low RC oscillator

After boot-up, the IHRC and ILRC oscillators are enabled. The frequency of IHRC can be calibrated to

eliminate process variation by ihrcr register; normally it is calibrated to 16MHz. Please refer to the

measurement chart for IHRC frequency verse V_DDand IHRC frequency verse temperature.

The frequency will vary by process, supply voltage and temperature, please refer to DC specification and do

not use for accurate timing application.

5.4.2. IHRC calibration

The IHRC frequency may be different chip by chip due to manufacturing variation, PMS154B provide the

IHRC frequency calibration to eliminate this variation, and this function can be selected when compiling

user’s program and the command will be inserted into user’s program automatically. The calibration

command is shown as below:

.ADJUST_IC SYSCLK=IHRC/(p1), IHRC=(p2)MHz, V_DD=(p3)V

Where,

p1=2, 4, 8, 16, 32; In order to provide different system clock.

p2=16 ~ 18; In order to calibrate the chip to different frequency, 16MHz is the usually one.

p3=2.2 ~ 5.5; In order to calibrate the chip under different supply voltage.

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5.4.3. IHRC Frequency Calibration and System Clock

During compiling the user program, the options for IHRC calibration and system clock are shown as Table 3:

SYSCLK

○ Set IHRC / 2

○ Set IHRC / 4

○ Set IHRC / 8

CLKMD

IHRCR

Calibrated

Description

= 34h (IHRC / 2)

= 14h (IHRC / 4)

= 3Ch (IHRC / 8)

IHRC calibrated to 16MHz, CLK=8MHz (IHRC/2)

IHRC calibrated to 16MHz, CLK=4MHz (IHRC/4)

IHRC calibrated to 16MHz, CLK=2MHz (IHRC/8)

IHRC calibrated to 16MHz, CLK=1MHz (IHRC/16)

IHRC calibrated to 16MHz, CLK=0.5MHz (IHRC/32)

IHRC calibrated to 16MHz, CLK=ILRC

○ Set IHRC / 16 = 1Ch (IHRC / 16) Calibrated

○ Set IHRC / 32 = 7Ch (IHRC / 32) Calibrated

○ Set ILRC

○ Disable

= E4h (ILRC / 1)

No change

Calibrated

No Change IHRC not calibrated, CLK not changed

Table 3: Options for IHRC Frequency Calibration

Usually, .ADJUST_IC will be the first command after boot up, in order to set the target operating frequency

whenever stating the system. The program code for IHRC frequency calibration is executed only one time that

occurs in writing the codes into OTP memory; after then, it will not be executed again. If the different option for

IHRC calibration is chosen, the system status is also different after boot. The following shows the status of

PMS154B for different option:

(1) . ADJUST_IC SYSCLK=IHRC/2, IHRC=16MHz, V_DD=5V

After boot, CLKMD = 0x34：



IHRC frequency is calibrated to 16MHz@V_DD=5V and IHRC module is enabled

System CLK = IHRC/2 = 8MHz

Watchdog timer is disabled, ILRC is enabled, PA5 is in input mode

(2) .ADJUST_IC SYSCLK=IHRC/4, IHRC=16MHz, V_DD=3.3V

After boot, CLKMD = 0x14：



IHRC frequency is calibrated to 16MHz@V_DD=3.3V and IHRC module is enabled

System CLK = IHRC/4 = 4MHz

Watchdog timer is disabled, ILRC is enabled, PA5 is in input mode

(3) .ADJUST_IC SYSCLK=IHRC/8, IHRC=16MHz, V_DD=2.5V

After boot, CLKMD = 0x3C：



IHRC frequency is calibrated to 16MHz@V_DD=2.5V and IHRC module is enabled

System CLK = IHRC/8 = 2MHz

Watchdog timer is disabled, ILRC is enabled, PA5 is in input mode

(4) .ADJUST_IC SYSCLK=IHRC/16, IHRC=16MHz, V_DD=2.2V

After boot, CLKMD = 0x1C：



IHRC frequency is calibrated to 16MHz@V_DD=2.2V and IHRC module is enabled

System CLK = IHRC/16 = 1MHz

Watchdog timer is disabled, ILRC is enabled, PA5 is in input mode

(5) .ADJUST_IC SYSCLK=IHRC/32, IHRC=16MHz, V_DD=5V

After boot, CLKMD = 0x7C：



IHRC frequency is calibrated to 16MHz@V_DD=5V and IHRC module is enabled

System CLK = IHRC/32 = 500KHz

Watchdog timer is disabled, ILRC is enabled, PA5 is in input mode

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(6) .ADJUST_IC SYSCLK=ILRC, IHRC=16MHz, V_DD=5V

After boot, CLKMD = 0xE4：



IHRC frequency is calibrated to 16MHz@V_DD=5V and IHRC module is disabled

System CLK = ILRC

Watchdog timer is disabled, ILRC is enabled, PA5 is in input mode

(7) .ADJUST_IC DISABLE

After boot, CLKMD is not changed (Do nothing)：



IHRC is not calibrated and IHRC module is disabled. Band-gap is not calibrated.

System CLK = ILRC or IHRC/64 (by Boot-up time)

Watchdog timer is enabled, ILRC is enabled, PA5 is in input mode

5.4.4. External Crystal Oscillator

If crystal oscillator is used, a crystal or resonator is required between X1 and X2. Fig. 2 shows the hardware

connection under this application; the range of operating frequency of crystal oscillator can be from 32 KHz

to 4MHz, depending on the crystal placed on; higher frequency oscillator than 4MHz is NOT supported.

(Select driving current for oscillator)

Eoscr[6:5]

(Enable crystal oscillator)

Eoscr.7

C1

PA7/X1

System clock = EOSC

PA6/X2

C2

The values of C1 and C2 should depend on

the specification of crystal.

Fig. 2: Connection of crystal oscillator

Besides crystal, external capacitor and options of PMS154B should be fine tuned in eoscr (0x0a) register to

have good sinusoidal waveform. The eoscr.7 is used to enable crystal oscillator module, eoscr.6 and eoscr.5

are used to set the different driving current to meet the requirement of different frequency of crystal

oscillator:

 eoscr.[6:5]=01 : Low driving capability, for lower frequency, ex: 32KHz crystal oscillator

 eoscr.[6:5]=10 : Middle driving capability, for middle frequency, ex: 1MHz crystal oscillator

 eoscr.[6:5]=11 : High driving capability, for higher frequency, ex: 4MHz crystal oscillator

Table 4 shows the recommended values of C1 and C2 for different crystal oscillator; the measured start-up

time under its corresponding conditions is also shown. Since the crystal or resonator had its own

characteristic, the capacitors and start-up time may be slightly different for different type of crystal or

resonator, please refer to its specification for proper values of C1 and C2.

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Measured

Frequency

C1

C2

Conditions

(eoscr[6:5]=11)

Start-up time

6ms

4MHz

1MHz

32KHz

4.7pF

10pF

22pF

4.7pF

10pF

22pF

11ms

(eoscr[6:5]=10)

(eoscr[6:5]=01)

450ms

Table 4: Recommend values of C1 and C2 for crystal and resonator oscillators

When using the crystal oscillator, user must pay attention to the stable time of oscillator after enabling it, the

stable time of oscillator will depend on frequency, crystal type, external capacitor and supply voltage. Before

switching the system to the crystal oscillator, user must make sure the oscillator is stable; the reference

program is shown as below:

void

{

FPPA0 (void)

. ADJUST_IC SYSCLK=IHRC/16, IHRC=16MHz, V_DD=5V

// If Band-gap is not calibrated, it can use “. ADJUST_IC

DISABLE”

...

$

EOSCR Enable, 4Mhz;

T16M EOSC, /1, BIT13;

// EOSCR = 0b110_00000;

// T16 receive 2^14=16384 clocks of crystal EOSC

// Intrq.T16 =>1, crystal EOSC Is stable

WORD

stt16

count

=

0;

count;

Intrq.T16 =

0;

while(!Intrq.T16) NULL;

Clkmd = 0xB4;

// count fm 0x0000 to 0x2000, then set INTRQ.T16

// IHRC switch to EOSC, not disable IHRC

Clkmd.4 = 0;

...

// disable IHRC

}

Please notice that the crystal oscillator should be fully turned off before entering the power-down mode, in

order to avoid unexpected wakeup event.

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5.4.5. System Clock and LVR levels

The clock source of system clock comes from IHRC、ILRC or EOSC, the hardware diagram of system clock

in the PMS154B is shown as Fig. 3.

clkmd[7:5]

÷2, ÷4, ÷8,

÷16, ÷32, ÷64

IHRC

M

U

System

clock

CLK

X

÷1, ÷4, ÷16

ILRC

÷1, ÷2, ÷4, ÷8

EOSC

Fig. 3: Options of System Clock

User can choose different operating system clock depends on its requirement; the selected operating system clock

should be combined with supply voltage and LVR level to make system stable. The LVR level will be checked during

compilation, and the lowest LVR levels can be chosen for different operating frequencies. Please refer to Section

4.1.

5.5. 16-bit Timer (Timer16)

PMS154B provide a 16-bit hardware timer (Timer16/T16) and its clock source may come from system clock

(CLK), internal high RC oscillator (IHRC), internal low RC oscillator (ILRC) , external crystal oscillator (EOSC),

PA0 or PA4. Before sending clock to the 16-bit counter, a pre-scaling logic with divided-by-1, 4, 16 or 64 is

selectable for wide range counting. The 16-bit counter performs up-counting operation only, the counter initial

values can be stored from data memory by issuing the stt16 instruction and the counting values can be

loaded to data memory by issuing the ldt16 instruction. The interrupt request from Timer16 will be triggered

by the selected bit which comes from bit[15:8] of this 16-bit counter, rising edge or falling edge can be

optional chosen by register integs.4. The hardware diagram of Timer16 is shown as Fig. 4.

Fig. 4: Hardware diagram of Timer16

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There are three parameters to define the Timer16 using; 1^stparameter is used to define the clock source of

Timer16, 2^ndparameter is used to define the pre-scalar and the 3^rdone is to define the interrupt source.

T16M IO_RW

0x06

$ 7~5:

$ 4~3:

$ 2~0:

STOP, SYSCLK, X, PA4_F, IHRC, EOSC, ILRC, PA0_F

/1, /4, /16, /64

// 1^stpar.

// 2^ndpar.

// 3^rdpar.

BIT8, BIT9, BIT10, BIT11, BIT12, BIT13, BIT14, BIT15

User can choose the proper parameters of T16M to meet system requirement, examples as below:

$

T16M

SYSCLK, /64, BIT15;

// choose (SYSCLK/64) as clock source, every 2^16 clock to set INTRQ.2=1

// if system clock SYSCLK = IHRC / 2 = 8 MHz

// SYSCLK/64 = 8 MHz/64 = 8 uS, about every 524 mS to generate INTRQ.2=1

$

T16M

PA0, /1, BIT8;

// choose PA0 as clock source, every 2^9 to generate INTRQ.2=1

// receiving every 512 times PA0 to generate INTRQ.2=1

T16M

STOP;

// stop Timer16 counting

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5.6. Watchdog Timer

The watchdog timer (WDT) is a counter with clock coming from ILRC. WDT can be cleared by power-on-reset

or by command wdreset at any time. There are four different timeout periods of watchdog timer can be

chosen by setting the misc register, it is:

 8k ILRC clock period when misc[1:0]=00 (default)

 16k ILRC clock period when misc[1:0]=01

 64k ILRC clock period when misc[1:0]=10

 256k ILRC clock period when misc[1:0]=11

The frequency of ILRC may drift a lot due to the variation of manufacture, supply voltage and temperature;

user should reserve guard band for safe operation. Besides, the watchdog period will also be shorter than

expected after Reset or Wakeup events. It is suggested to clear WDT by wdreset command after these

events to ensure enough clock periods before WDT timeout.

When WDT is timeout, PMS154B will be reset to restart the program execution. The relative timing diagram of

watchdog timer is shown as Fig. 5.

VDD

t

SBP

WD

Time Out

Program

Execution

Watch Dog Time Out Sequence

Fig. 5: Sequence of Watch Dog Time Out

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5.7. Interrupt Controller

The hardware diagram of interrupt controller is shown as Fig. 6, there are total 7 interrupt sources for

PMS154B: PA0, PB0, Timer16, Comparator, Timer2, Timer3, PWM Generator 0. Among them, every

interrupt request line to CPU has its own corresponding interrupt control bit to enable or disable it. All the

interrupt request flags are set by hardware and cleared by writing intrq register. When the request flags are

set, it can be rising edge, falling edge or both, depending on the setting of register integs. All the interrupt

request lines are also controlled by engint instruction (enable global interrupt) to enable interrupt operation

and disgint instruction (disable global interrupt) to disable it.

Fig. 6: Hardware diagram of Interrupt controller

The stack memory for interrupt is shared with data memory and its address is specified by stack register sp.

Since the program counter is 16 bits width, the bit 0 of stack register sp should be kept 0. Moreover, user can

use pushaf / popaf instructions to store or restore the values of ACC and flag register to / from stack

memory. Since the stack memory is shared with data memory, the stack position and level are arranged by

the compiler in Mini-C project. When defining the stack level in ASM project, users should arrange their

locations carefully to prevent address conflicts.

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Once the interrupt occurs, its operation will be:

 The program counter will be stored automatically to the stack memory specified by register sp.

 New sp will be updated to sp+2.

 Global interrupt will be disabled automatically.

 The next instruction will be fetched from address 0x010.

During the interrupt service routine, the interrupt source can be determined by reading the intrq register.

Note: Even if INTEN=0, INTRQ will be still triggered by the interrupt source.

After finishing the interrupt service routine and issuing the reti instruction to return back, its operation will be:

 The program counter will be restored automatically from the stack memory specified by register sp.

 New sp will be updated to sp-2.

 Global interrupt will be enabled automatically.

 The next instruction will be the original one before interrupt.

User must reserve enough stack memory for interrupt, two bytes stack memory for one level interrupt and four

bytes for two levels interrupt. For interrupt operation, the following sample program shows how to handle the

interrupt, noticing that it needs four bytes stack memory to handle interrupt and pushaf.

void

{

FPPA0

(void)

...

$

INTEN PA0;

// INTEN =1; interrupt request when PA0 level changed

// clear INTRQ

INTRQ

ENGINT

...

=

0;

// global interrupt enable

DISGINT

...

// global interrupt disable

}

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void Interrupt (void)

// interrupt service routine

{

PUSHAF

// store ALU and FLAG register

// If INTEN.PA0 will be opened and closed dynamically,

// user can judge whether INTEN.PA0 =1 or not.

// Example: If (INTEN.PA0 && INTRQ.PA0) {…}

// If INTEN.PA0 is always enable,

// user can omit the INTEN.PA0 judgement to speed up interrupt service routine.

If (INTRQ.PA0)

{

// Here for PA0 interrupt service routine

INTRQ.PA0 = 0;

...

// Delete corresponding bit (take PA0 for example)

}

...

// X : INTRQ = 0;

// It is not recommended to use INTRQ = 0 to clear all at the end of

the

// interrupt service routine.

// It may accidentally clear out the interrupts that have just occurred

// and are not yet processed.

POPAF

// restore ALU and FLAG register

}

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8bit IO-Type Controller

5.8. Power-Save and Power-Down

There are three operational modes defined by hardware: ON mode, Power-Save mode and Power-Down

modes. ON mode is the state of normal operation with all functions ON, Power-Save mode (“stopexe”) is the

state to reduce operating current and CPU keeps ready to continue, Power-Down mode (“stopsys”) is used

to save power deeply. Therefore, Power-Save mode is used in the system which needs low operating power

with wake-up occasionally and Power-Down mode is used in the system which needs power down deeply

with seldom wake-up. Table 5 shows the differences in oscillator modules between Power-Save mode

(“stopexe”) and Power-Down mode (“stopsys”).

Differences in oscillator modules between STOPSYS and STOPEXE

IHRC

Stop

ILRC

Stop

STOPSYS

STOPEXE

No Change

Table 5: Differences in oscillator modules between STOPSYS and STOPEXE

5.8.1. Power-Save mode (“stopexe”)

Using “stopexe” instruction to enter the Power-Save mode, only system clock is disabled, remaining all the

oscillator modules be active. For CPU, it stops executing; however, for Timer16, counter keep counting if its

clock source is not the system clock. The wake-up sources for “stopexe” can be IO-toggle or Timer16

counts to set values when the clock source of Timer16 is IHRC or ILRC modules. , or wakeup by comparator

when setting GPCC.7=1 and GPCS.6=1 to enable the comparator wakeup function at the same time. Wake-up from

input pins can be considered as a continuation of normal execution, the detail information for Power-Save

mode shown below:

 IHRC oscillator modules: No change, keep active if it was enabled

 ILRC oscillator modules: must remain enabled, need to start with ILRC when be wakening up

 System clock: Disable, therefore, CPU stops execution

 OTP memory is turned off

 Timer16, Timer2, Timer3: Stop counting if system clock is selected or the corresponding oscillator

module is disabled; otherwise, it keeps counting.

 Wake-up sources: IO toggle in digital mode (PxDIER bit is 1) or Timer16 or Timer2 or Timer3 or

comparator.

An example shows how to use Timer16 to wake-up from “stopexe”:

$ T16M IHRC, /1, BIT8

…

// Timer16 setting

WORD

STT16

stopexe;

…

count

count;

=

0;

The initial counting value of Timer16 is zero and the system will be woken up after the Timer16 counts 256

IHRC clocks.

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8bit OTP IO IO Controller

5.8.2. Power-Down mode (“stopsys”)

Power-Down mode is the state of deeply power-saving with turning off all the oscillator modules. By using

the “stopsys” instruction, this chip will be put on Power-Down mode directly. It is recommend to set

GPCC.7=0 to disable the comparator before the command “stopsys”. Before entering Power-Down mode,

the internal low-frequency oscillator (ILRC) must be enabled to wake up the system, that is, before issuing

the stopsys command, the bit 2 of the CLKMD register must be set to 1. The following shows the internal

status of PMS154B in detail when “stopsys” command is issued:

 All the oscillator modules are turned off

 OTP memory is turned off

 The contents of SRAM and registers remain unchanged

 Wake-up sources: IO toggle in digital mode (PxDIER bit is 1)

Wake-up from input pins can be considered as a continuation of normal execution. To minimize power

consumption, all the I/O pins should be carefully manipulated before entering power-down mode. The

reference sample program for power down is shown as below:

CMKMD

=

0xF4;

0;

//

Change clock from IHRC to ILRC, disable watchdog timer

disable IHRC

CLKMD.4 =

…

while (1)

{

STOPSYS;

if (…) break;

//

enter power-down

if wakeup happen and check OK, then return to high speed,

else stay in power-down mode again.

}

CLKMD

=

0x34;

//

Change clock from ILRC to IHRC/2

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8bit OTP IO IO Controller

5.8.3. Wake-up

After entering the Power-Down or Power-Save modes, the PMS154B can be resumed to normal operation

by toggling IO pins, Timer16, Timer2 and Timer3 interrupt is available for Power-Save mode ONLY. Table 6

shows the differences in wake-up sources between STOPSYS and STOPEXE.

Differences in wake-up sources between STOPSYS and STOPEXE

IO Toggle

Yes

TimerInterrupt

STOPSYS

STOPEXE

No

Yes

Table 6: Differences in wake-up sources between Power-Save mode and Power-Down mode

When using the IO pins to wake-up the PMS154B, registers pxdier should be properly set to enable the

wake-up function for every corresponding pin. The time for normal wake-up is about 3000 ILRC clocks

counting from wake-up event; fast wake-up can be selected to reduce the wake-up time by misc register,

and the time for fast wake-up is about 45 ILRC clocks from IO toggling.

Suspend mode

Wake-up mode

Wake-up time (t_WUP) from IO toggle

STOPEXE suspend

or

STOPSYS suspend

45 * T_ILRC,

Where T_ILRCis the time period of ILRC

Fast wake-up

STOPEXE suspend

or

STOPSYS suspend

3000 * T_ILRC

,

Normal wake-up

Where T_ILRCis the clock period of ILRC

Please notice that when Fast boot-up is selected, no matter which wake-up mode is selected in misc.5, the

wake-up mode will be forced to be FAST. If Normal boot-up is selected, the wake-up mode is determined by

misc.5.

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8bit OTP IO IO Controller

5.9. IO Pins

Other than PA5, all the pins can be independently set into two states output or input by configuring the data

registers (pa/pb), control registers (pac/pbc) and pull-high registers (paph/pbph) . All these pins have

Schmitt-trigger input buffer and output driver with CMOS level. When it is set to output low, the pull-up resistor

is turned off automatically. If user wants to read the pin state, please notice that it should be set to input mode

before reading the data port; if user reads the data port when it is set to output mode, the reading data comes

from data register, NOT from IO pad. As an example, Table 7 shows the configuration table of bit 0 of port A.

The hardware diagram of IO buffer is also shown as Fig. 7.

pa.0 pac.0 paph.0

Description

Input without pull-up resistor

X

0

1

0

1

0

1

X

0

1

Input with pull-up resistor

Output low without pull-up resistor

Output high without pull-up resistor

Output high with pull-up resistor

Table 7: PA0 Configuration Table

RD pull-high latch

WR pull-high latch

D

Q

(weak P-MOS)

pull-high

latch

D

Q

Data

latch

Q1

PAD

WR data latch

RD control latch

Q

WR control latch

Control

latch

M

U

X

RD Port

Data Bus

padier.x

Wakeup module

Interrupt module

(PA0 only)

Analog Module

Fig. 7: Hardware diagram of IO buffer

Other than PA5, all the IO pins have the same structure; PA5 can be open-drain ONLY when setting to output

mode (without Q1). When PMS154B put in power-down or power-save mode, every pin can be used to

wake-up system by toggling its state. Therefore, those pins needed to wake-up system must be set to input

mode and set the corresponding bits of registers pxdier to high. The same reason, padier.0 should be set to

high when PA0 is used as external interrupt pin.

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8bit OTP IO IO Controller

5.10. Reset

5.10.1. Reset

There are many causes to reset the PMS154B, once reset is asserted, all the registers in PMS154B will be

set to default values, system should be restarted once abnormal cases happen, or by jumping program

counter to address 0x0. The data memory is in uncertain state when reset comes from power-up and LVR;

however, the content will be kept when reset comes from PRST# pin or WDT timeout.

5.10.2. LVR reset

By code option, there are many different levels of LVR for reset. Usually, user selects LVR reset level to be

in conjunction with operating frequency and supply voltage.

5.11. VDD/2 Bias Voltage Generator

This function can be enabled by bit 4 of misc register. Those pins which are defined to output VDD/2

voltage are PB0, PA0, PA4 and PA3 during input mode, being used as COM function for LCD application. If

user

wants to output VDD, VDD/2, GND three levels voltage, the corresponding pins must be set to

output-high for VDD, enabling VDD/2 bias voltage with input mode for VDD/2, and

correspondingly, Fig.8 shows how to use this function.

output-low for GND

VDD

VDD/2

GND

Pin set to output high

Pin set to input

Pin set to output low

Fig. 8: Using VDD/2 bias voltage generator

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8bit OTP IO IO Controller

5.12. Comparator

One hardware comparator is built inside the PMS154B; Fig. 9 shows its hardware diagram. It can compare

signals between two pins or with either internal reference voltage V_{internal R}or internal band-gap reference

voltage. The two signals to be compared, one is the plus input and the other one is the minus input. For the

minus input of comparator can be PA3, PA4, Internal band-gap 1.20V, PB6, PB7 or V_{internal R}selected by bit

[3:1] of gpcc register, and the plus input of comparator can be PA4 or V_{internal R}selected by bit 0 of gpcc

register.

The comparator result can be selected through gpcs.7 to forcibly output to PA0 whatever input or output

state. It can be a direct output or sampled by Timer2 clock (TM2_CLK) which comes from Timer2 module.

The output polarity can be also inverted by setting gpcc.4 register. The comparator output can be used to

request interrupt service or read through gpcc.6.

16 stages

VDD

8R

gpcs.5=1

gpcs.4=0

R

gpcs.4=1

gpcs.5=0

gpcs[3:0]

MUX

V_{internal R}

gpcc[3:1]

PA3/CIN1-

PA4/CIN4-

Band-gap

000

001 M

To request interrupt

gpcc.6

gpcc.4

010 U

011 X

100

X

O

R

-

PB6/CIN2-

PB7/CIN3-

M

U

X

101

+

D

F

To

PA0

0

Timer 2

clock

MUX

PA4/CIN+

gpcc.0

1

TM2_CLK

gpcc.5

gpcs.7

Fig. 9: Hardware diagram of comparator

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8bit OTP IO IO Controller

5.12.1. Internal reference voltage (V_{internal R}

)

The internal reference voltage V_{internal R}is built by series resistance to provide different level of reference

voltage, bit 4 and bit 5 of gpcs register are used to select the maximum and minimum values of V_{internal R}and

bit [3:0] of gpcs register are used to select one of the voltage level which is deivided-by-16 from the defined

maximum level to minimum level. Fig. 10 to Fig. 13 shows four conditions to have different reference voltage

V_{internal R}. By setting the gpcs register, the internal reference voltage V_{internal R}can be ranged from (1/32)*V_DD

to (3/4)*V_DD.

Case 1 : gpcs.5=0 & gpcs.4=0

16 stages

VDD

8R

gpcs.4=0

gpcs.4=1

gpcs.5=1

R

gpcs.5=0

MUX

gpcs[3:0]

V _{internal R}= (3/4) VDD ~ (1/4) VDD + (1/32) VDD

@ gpcs[3:0] = 1111 ~ gpcs[3:0] = 0000

1

4

(n+1)

32

V _{internal R}

=

*

VDD +

*

VDD, n = gpcs[3:0] in decimal

Fig. 10: V_{internal R}hardware connection if gpcs.5=0 and gpcs.4=0

Case 2 : gpcs.5=0 & gpcs.4= 1

16 stages

VDD

8R

gpcs.4=0

gpcs.4=1

gpcs.5=1

R

gpcs.5=0

MUX

gpcs[3:0]

V _{internal R}= (2/3) VDD ~ (1/24) VDD

@ gpcs[3:0] = 1111 ~ gpcs[3:0] = 0000

(n+1)

V _{internal R}

=

*

VDD, n = gpcs[3:0] in decimal

24

Fig. 11: V_{internal R}hardware connection if gpcs.5=0 and gpcs.4=1

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8bit OTP IO IO Controller

Case 3 : gpcs.5=1 & gpcs.4= 0

16 stages

VDD

8R

gpcs.5=1

gpcs.4=0

gpcs.4=1

R

gpcs.5=0

MUX

gpcs[3:0]

V _{internal R}= (3/5) VDD ~ (1/5) VDD + (1/40) VDD

@ gpcs[3:0] = 1111 ~ gpcs[3:0] = 0000

1

5

(n+1)

40

V _{internal R}

=

*

VDD +

*

VDD, n = gpcs[3:0] in decimal

Fig. 12: V_{internal R}hardware connection if gpcs.5=1 and gpcs.4=0

Case 4 : gpcs.5=1 & gpcs.4=1

16 stages

VDD

8R

gpcs.4=0

gpcs.4=1

gpcs.5=1

R

gpcs.5=0

MUX

gpcs[3:0]

V _{internal R}= (1/2) VDD ~ (1/32) VDD

@ gpcs[3:0] = 1111 ~ gpcs[3:0] = 0000

(n+1)

V _{internal R}

=

*

VDD, n = gpcs[3:0] in decimal

32

Fig. 13: V_{internal R}hardware connection if gpcs.5=1 and gpcs.4=1

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8bit OTP IO IO Controller

5.12.2. Using the comparator

Case 1:

Choosing PA3 as minus input and V_{internal R}with (18/32)*V_DDvoltage level as plus input. V_{internal R}is

configured as the above Figure “gpcs[5:4] = 2b’00” and gpcs [3:0] = 4b’1001 (n=9) to have V_{internal R}

(1/4)*V_DD+ [(9+1)/32]*V_DD= [(9+9)/32]*V_DD= (18/32)*V_DD.

=

gpcs

gpcc

padier

= 0b0_0_00_1001;

= 0b1_0_0_0_000_0;

= 0bxxxx_0_xxx;

// V_{internal R}= V_DD*(18/32)

// enable comp, - input: PA3, + input: V_{internal R}

// disable PA3 digital input to prevent leakage current

or

$ GPCS V_DD*18/32;

$ GPCC Enable, N_PA3, P_R;

PADIER = 0bxxxx_0_xxx;

// - input: N_xx，+ input: P_R(V_{internal R})

Case 2:

Choosing V_{internal R}as minus input with (22/40)*V_DDvoltage level and PA4 as plus input, the comparator

result will be inversed and then output to PA0. V_{internal R}is configured as the above Figure “gpcs[5:4] =

2b’10” and gpcs [3:0] = 4b’1101 (n=13) to have V_{internal R}= (1/5)*V_DD+ [(13+1)/40]*V_DD= [(13+9)/40]*V_DD

(22/40)*V_DD.

=

gpcs

gpcc

padier

= 0b1_0_10_1101;

= 0b1_0_0_1_011_1;

= 0bxxxx_0_xxx;

// output to PA0, V_{internal R}= V_DD*(22/40)

// Inverse output, - input: V_{internal R}, + input: PA4

// disable PA4 digital input to prevent leakage current

or

$ GPCS Output, V_DD*22/40;

$ GPCC Enable, Inverse, N_R, P_PA4; // - input: N_R(V_{internal R})，+ input: P_xx

PADIER = 0bxxx_0_xxxx;

Note: When selecting output to PA0 output, GPCS will affect the PA3 output function in ICE. Though the IC

is fine, be careful to avoid this error during emulation.

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8bit OTP IO IO Controller

5.12.3. Using the comparator and band-gap 1.20V

The internal band-gap module provides a stable 1.20V output, and it can be used to measure the external

supply voltage level. The band-gap 1.20V is selected as minus input of comparator and V_{internal R}is selected

as plus input, the supply voltage of V_{internal R}is V_DD, the V_DDvoltage level can be detected by adjusting the

voltage level of V_{internal R}to compare with band-gap. If N (gpcs[3:0] in decimal) is the number to let V_{internal R}

closest to band-gap 1.20 volt, the supply voltage V_DDcan be calculated by using the following equations:

For using Case 1: V_DD= [ 32 / (N+9) ] * 1.20 volt ;

For using Case 2: V_DD= [ 24 / (N+1) ] * 1.20 volt ;

For using Case 3: V_DD= [ 40 / (N+9) ] * 1.20 volt ;

For using Case 4: V_DD= [ 32 / (N+1) ] * 1.20 volt ;

Case 1:

$ GPCS V_DD*12/40;

// 4.0V * 12/40 = 1.2V

$ GPCC Enable, BANDGAP, P_R; // - input: BANDGAP, + input: P_R(V_{internal R}

)

….

if (GPC_Out)

// or GPCC.6

{

// when V_DD﹥4V

}

else

{

}

// when V_DD﹤4V

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8bit OTP IO IO Controller

5.13. 8-bit Timer with PWM generation (Timer2, Timer3)

Two 8-bit hardware timer (Timer2/TM2、Timer3/TM3) with PWM generation is implemented in the PMS154B,

Timer2 is used as the example to describe its function due to these two 8-bit timers are the same. Please

refer to Fig. 14 shown its hardware diagram, the clock sources of Timer2 may come from system clock,

internal high RC oscillator (IHRC) or, internal low RC oscillator (ILRC), external crystal oscillator (EOSC),

PA0, PA4, PB0 or comparator. Bit[7:4] of register tm2c are used to select the clock source of Timer2. Please

notice that if IHRC is selected for Timer2 clock source, the clock sent to Timer2 will keep running when using

ICE in halt state. According to the setting of register tm2c[3:2], Timer2 output can be selectively output to

PB2, PA3 or PB4(Timer3 count output can be selected as PB5, PB6 or PB7). At this point, regardless of

whether PX.x is the input or output state, Timer2( or Timer3) signal will be forced to output. A clock

pre-scaling module is provided with divided-by-1, 4, 16, and 64 options, controlled by bit [6:5] of tm2s

register; one scaling module with divided-by-1~31 is also provided and controlled by bit [4:0] of tm2s register.

In conjunction of pre-scaling function and scaling function, the frequency of Timer2 clock (TM2_CLK) can be

wide range and flexible.

The Timer2 counter performs 8-bit up-counting operation only; the counter values can be set or read back by

tm2ct register. The 8-bit counter will be clear to zero automatically when its values reach for upper bound

register, the upper bound register is used to define the period of timer or duty of PWM. There are two

operating modes for Timer2: period mode and PWM mode; period mode is used to generate periodical

output waveform or interrupt event; PWM mode is used to generate PWM output waveform with optional

6-bit or 8-bit PWM resolution, Fig. 15 shows the timing diagram of Timer2 for both period mode and PWM

mode.

TM2_CLK

tm2s.7

tm2c.1

tm2c[7:4]

tm2s[6:5] tm2s[4:0]

edge to

interrupt

CLK,

M

U

X

IHRC,

ILRC,

EOSC

Cmp,

PA0,

Pre-

scalar

÷

1, 4,

16, 64

Scalar

8-bit

up

counter

tm2ct[7:0]

÷

1 ~ 31

X

O

R

D

E

M

U

X

PB4

PB2

~PA0,

PB0,

~PB0,

PA4,

PA3

upper

bound

register

~PA4

tm2c.0

tm2b[7:0]

tm2c[3:2]

Fig. 14: Timer2 hardware diagram

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8bit OTP IO IO Controller

Time out and

Interrupt request

Time out and

Interrupt request

Time out and

Interrupt request

Counter

0xFF

bound

Counter

0xFF

Counter

0x3F

bound

Time

Event Trigger

Output-pin

Time

Mode 0 – Period Mode

Mode 1 – 8-bit PWM Mode

Mode 1 – 6-bit PWM Mode

Fig. 15: Timing diagram of Timer2 in period mode and PWM mode (tm2c.1=1)

5.13.1. Using the Timer2 to generate periodical waveform

If periodical mode is selected, the duty cycle of output is always 50%; its frequency can be summarized as

below:

Frequency of Output = Y ÷ [2 × (K+1) × S1 × (S2+1) ]

Where,

Y = tm2c[7:4] : frequency of selected clock source

K = tm2b[7:0] : bound register in decimal

S1 = tm2s[6:5] : pre-scalar (1, 4, 16, 64)

S2 = tm2s[4:0] : scalar register in decimal (1 ~ 31)

Example 1:

tm2c = 0b0001_1000, Y=8MHz

tm2b = 0b0111_1111, K=127

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency of output = 8MHz ÷ [ 2 × (127＋1) × 1 × (0＋1) ] = 31.25KHz

Example 2:

Example 3:

tm2c = 0b0001_1000, Y=8MHz

tm2b = 0b0111_1111, K=127

tm2s[7:0] = 0b0_11_11111, S1=64 , S2 = 31

 frequency = 8MHz ÷ ( 2 × (127＋1) × 64 × (31＋1) ) =15.25Hz

tm2c = 0b0001_1000, Y=8MHz

tm2b = 0b0000_1111, K=15

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency = 8MHz ÷ ( 2 × (15＋1) × 1 × (0＋1) ) = 250KHz

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Example 4:

tm2c = 0b0001_1000, Y=8MHz

tm2b = 0b0000_0001, K=1

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency = 8MHz ÷ ( 2 × (1＋1) × 1 × (0＋1) ) =2MHz

The sample program for using the Timer2 to generate periodical waveform to PA3 is shown as below:

void FPPA0 (void)

{

. ADJUST_IC

…

SYSCLK=IHRC/2, IHRC=16MHz, V_DD=5V

tm2ct = 0x00;

tm2b = 0x7f;

tm2s = 0b0_00_00001;

tm2c = 0b0001_10_0_0;

//

8-bit PWM, pre-scalar = 1, scalar = 2

system clock, output=PA3, period mode

while(1)

{

nop;

}

5.13.2. Using the Timer2 to generate 8-bit PWM waveform

If 8-bit PWM mode is selected, it should set tm2c[1]=1 and tm2s[7]=0, the frequency and duty cycle of

output waveform can be summarized as below:

Frequency of Output = Y ÷ [256 × S1 × (S2+1) ]

Duty of Output = [( K＋1 ) ÷ 256]×100%

Where,

Y = tm2c[7:4] : frequency of selected clock source

K = tm2b[7:0] : bound register in decimal

S1= tm2s[6:5] : pre-scalar (1, 4, 16, 64)

S2 = tm2s[4:0] : scalar register in decimal (1 ~ 31)

Example 1:

tm2c = 0b0001_1010, Y=8MHz

tm2b = 0b0111_1111, K=127

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency of output = 8MHz ÷ ( 256 × 1 × (0+1) ) = 31.25KHz

 duty of output = [(127+1) ÷ 256] × 100% = 50%

Example 2:

tm2c = 0b0001_1010, Y=8MHz

tm2b = 0b0111_1111, K=127

tm2s = 0b0_11_11111, S1=64, S2=31

 frequency of output = 8MHz ÷ ( 256 × 64 × (31+1) ) = 15.25Hz

 duty of output = [(127+1) ÷ 256] × 100% = 50%

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Example 3:

tm2c = 0b0001_1010, Y=8MHz

tm2b = 0b1111_1111, K=255

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency of output = 8MHz ÷ ( 256 × 1 × (0+1) ) = 31.25KHz

 duty of output = [(255+1) ÷ 256] × 100% = 100%

Example 4:

tm2c = 0b0001_1010, Y=8MHz

tm2b = 0b0000_1001, K = 9

tm2s = 0b0_00_00000, S1=1, S2=0

 frequency of output = 8MHz ÷ ( 256 × 1 × (0+1) ) = 31.25KHz

 duty of output = [(9+1) ÷ 256] × 100% = 3.9%

The sample program for using the Timer2 to generate PWM waveform from PA3 is shown as below:

void

{

FPPA0 (void)

.ADJUST_IC SYSCLK=IHRC/2, IHRC=16MHz, V_DD=5V

wdreset;

tm2ct = 0x00;

tm2b = 0x7f;

tm2s = 0b0_00_00001;

//

8-bit PWM, pre-scalar = 1, scalar = 2

system clock, output=PA3, PWM mode

tm2c = 0b0001_10_1_0;

while(1)

{

nop;

}

5.13.3.

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5.13.4. Using the Timer2 to generate 6-bit PWM waveform

If 6-bit PWM mode is selected, it should set tm2c[1]=1 and tm2s[7]=1, the frequency and duty cycle of

output waveform can be summarized as below:

Frequency of Output = Y ÷ [64 × S1 × (S2+1) ]

Duty of Output = [( K＋1 ) ÷ 64] × 100%

Where, tm2c[7:4] = Y : frequency of selected clock source

tm2b[7:0] = K : bound register in decimal

tm2s[6:5] = S1 : pre-scalar (1, 4, 16, 64)

tm2s[4:0] = S2 : scalar register in decimal (1 ~ 31)

Example 1:

tm2c = 0b0001_1010, Y=8MHz

tm2b = 0b0001_1111, K=31

tm2s = 0b1_00_00000, S1=1, S2=0

 frequency of output = 8MHz ÷ ( 64 × 1 × (0+1) ) = 125KHz

 duty = [(31+1) ÷ 64] × 100% = 50%

Example 2:

tm2c = 0b0001_1010, Y=8MHz

tm2b = 0b0001_1111, K=31

tm2s = 0b1_11_11111, S1=64, S2=31

 frequency of output = 8MHz ÷ ( 64 × 64 × (31+1) ) = 61.03Hz

 duty of output = [(31+1) ÷ 64] × 100% = 50%

Example 3:

tm2c = 0b0001_1010, Y=8MHz

tm2b = 0b0011_1111, K=63

tm2s = 0b1_00_00000, S1=1, S2=0

 frequency of output = 8MHz ÷ ( 64 × 1 × (0+1) ) = 125KHz

 duty of output = [(63+1) ÷ 64] × 100% = 100%

Example 4:

tm2c = 0b0001_1010, Y=8MHz

tm2b = 0b0000_0000, K=0

tm2s = 0b1_00_00000, S1=1, S2=0

 frequency = 8MHz ÷ ( 64 × 1 × (0+1) ) = 125KHz

 duty = [(0+1) ÷ 64] × 100% =1.5%

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5.14. 11-bit PWM generation

5.14.1. PWM Waveform

A PWM output waveform (Fig. 16) has a time-base (T_Period= Time of Period) and a time with output high

level (Duty Cycle). The frequency of the PWM output is the inverse of the period (f_PWM= 1/T_Period), the

resolution of the PWM is the clock count numbers for one period (N bits resolution, 2^N× T_clock= T_Period).

Period

Duty Cycle

clock

‧‧‧‧‧‧‧

N bit resolution

Fig. 16: PWM Output Waveform

5.14.2. Hardware and Timing Diagram

Fig. 17 shows the hardware diagram of 11-bit Timer. The clock source can be IHRC or system clock.

Depending on the setting of register PWMC, PWM can be optionally output to PA0, PB4 or PB5. At this

point, PWM signal will be forced to output regardless of whether PX.x is the input or output state.. The

period of PWM waveform is defined in the PWM upper bond high and low registers, the duty cycle of PWM

waveform is defined in the PWM duty high and low registers.

Fig. 17: Hardware Diagram of 11-bit PWM Generator 0 (PWMG0)

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0x7FF

Counter_Bound[10:0]

11-bit

Counter

Duty[10:0]

Time

Output

Time

Output Timing Diagram for 11-bit PWM generation

Fig. 18: Output Timing Diagram of 11-bit PWM Generator

5.14.3. Equations for 11-bit PWM Generator

If F_IHRCis the frequency of IHRC oscillator and IHRC is the chosen clock source for 11-bit PWM generator,

the PWM frequency and duty cycle in time will be:

Frequency of PWM Output = F_IHRC÷ [P × (K + 1) × CB ]

Duty Cycle of PWM Output (in time) = (1/F_IHRC) * [ DB10_1 + DB0 * 0.5 + 0.5]

Where,

pwms[6:5] = P ; pre-scalar

pwms[4:0] = K ; scalar

Duty_Bound[10:1] = { pwmgxdth [7:0], pwmgxdtl[7:6]} = DB10_1; duty bound

Duty_Bound[0] = pwmgxdtl[5] = DB0

Counter_Bound[10:1] = { pwmgxcubh [7:0], pwmgxcubl [7:6]} = CB; counter bount

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6. IO Registers

6.1. ACC Status Flag Register (flag), IO address = 0x00

Bit

7 - 4

3

Reset R/W

Description

-

Reserved. These four bits are “1” when read.

R/W OV (Overflow). This bit is set whenever the sign operation is overflow.

AC (Auxiliary Carry). There are two conditions to set this bit, the first one is carry out of low

R/W nibble in addition operation, and the other one is borrow from the high nibble into low nibble

in subtraction operation.

2

-

C (Carry). There are two conditions to set this bit, the first one is carry out in addition

R/W operation, and the other one is borrow in subtraction operation. Carry is also affected by

shift with carry instruction.

1

0

-

Z (Zero). This bit will be set when the result of arithmetic or logic operation is zero;

R/W

Otherwise, it is cleared.

6.2. Stack Pointer Register (sp), IO address = 0x02

Bit

Reset R/W

Description

Stack Pointer Register. Read out the current stack pointer, or write to change the stack

pointer. Please notice that bit 0 should be kept 0 due to program counter is 16 bits.

7 - 0

-

R/W

6.3. Clock Mode Register (clkmd), IO address = 0x03

Bit

Reset R/W

Description

System clock selection:

Type 0, clkmd[3]=0

Type 1, clkmd[3]=1

000: IHRC/4

001: IHRC/2

010: reserved

011: EOSC/4

100: EOSC/2

101: EOSC

000: IHRC/16

001: IHRC/8

010: ILRC/16 (ICE does NOT Support.)

011: IHRC/32

7 - 5

111 R/W

100: IHRC/64

101: EOSC/8

110: ILRC/4

Others: reserved

111: ILRC (default)

4

3

1

0

R/W IHRC oscillator Enable. 0 / 1: disable / enable

Clock Type Select. This bit is used to select the clock type in bit [7:5].

0 / 1: Type 0 / Type 1

RW

ILRC Enable. 0 / 1: disable / enable

2

1

R/W

If ILRC is disabled, watchdog timer is also disabled.

1

0

1

0

R/W Watch Dog Enable. 0 / 1: disable / enable

R/W Pin PA5/PRST# function. 0 / 1: PA5 / PRST#

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6.4. Interrupt Enable Register (inten), IO address = 0x04

Bit

Reset R/W

Description

7

-

R/W Enable interrupt from Timer3. 0 / 1: disable / enable.

R/W Enable interrupt from Timer2. 0 / 1: disable / enable.

R/W Enable interrupt from PWMG0. 0 / 1: disable / enable.

R/W Enable interrupt from comparator. 0 / 1: disable / enable.

R/W Reserved.

6

5

4

3

2

R/W Enable interrupt from Timer16 overflow. 0 / 1: disable / enable.

R/W Enable interrupt from PB0. 0 / 1: disable / enable.

R/W Enable interrupt from PA0. 0 / 1: disable / enable.

1

0

6.5. Interrupt Request Register (intrq), IO address = 0x05

Bit

Reset R/W

Description

Interrupt Request from Timer3, this bit is set by hardware and cleared by software.

0 / 1: No request / Request

7

-

R/W

Interrupt Request from Timer2, this bit is set by hardware and cleared by software.

0 / 1: No request / Request

6

5

Interrupt Request from PWMG0, this bit is set by hardware and cleared by software.

0 / 1: No request / Request

Interrupt Request from comparator, this bit is set by hardware and cleared by software.

0 / 1: No request / Request

4

3

2

-

R/W

-

Reserved.

Interrupt Request from Timer16, this bit is set by hardware and cleared by software.

0 / 1: No request / Request

R/W

Interrupt Request from pin PB0, this bit is set by hardware and cleared by software.

0 / 1: No request / Request

1

0

-

R/W

Interrupt Request from pin PA0, this bit is set by hardware and cleared by software.

0 / 1: No request / Request

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6.6. Timer 16 mode Register (t16m), IO address = 0x06

Bit

Reset R/W

Description

Timer Clock source selection

000: Timer 16 is disabled

001: CLK (system clock)

010: reserved

7 - 5

000 R/W 011: PA4 falling edge (from external pin)

100: IHRC

101: EOSC

110: ILRC

111: PA0 falling edge (from external pin)

Internal clock divider.

00: /1

4 - 3

00

R/W 01: /4

10: /16

11: /64

Interrupt source selection. Interrupt event happens when selected bit is changed.

0 : bit 8 of Timer16

1 : bit 9 of Timer16

2 : bit 10 of Timer16

2 - 0

000 R/W 3 : bit 11 of Timer16

4 : bit 12 of Timer16

5 : bit 13 of Timer16

6 : bit 14 of Timer16

7 : bit 15 of Timer16

6.7. External Oscillator setting Register (eoscr, write only), IO address = 0x0a

Bit

Reset R/W

Description

7

0

WO Enable external crystal oscillator. 0 / 1 : Disable / Enable

External crystal oscillator selection.

00 : reserved

6 - 5

00

WO 01 : Low driving capability, for lower frequency, ex: 32KHz crystal oscillator

10 : Middle driving capability, for middle frequency, ex: 1MHz crystal oscillator

11 : High driving capability, for higher frequency, ex: 4MHz crystal oscillator

4 - 1

0

-

Reserved. Please keep 0 for future compatibility.

0

WO Power-down the Band-gap and LVR hardware modules. 0 / 1: normal / power-down.

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6.8. Interrupt Edge Select Register (integs), IO address = 0x0c

Bit

Reset R/W

Description

7 - 5

-

WO Reserved.

Timer16 edge selection.

WO 0 : rising edge to trigger interrupt

1 : falling edge to trigger interrupt

PB0 edge selection.

4

0

00 : both rising edge and falling edge to trigger interrupt

WO 01 : rising edge to trigger interrupt

10 : falling edge to trigger interrupt

11 : reserved.

3 - 2

00

PA0 edge selection.

00 : both rising edge and falling edge to trigger interrupt

WO 01 : rising edge to trigger interrupt

10 : falling edge to trigger interrupt

11 : reserved.

1 - 0

6.9. Port A Digital Input Enable Register (padier), IO address = 0x0d

Bit

Reset R/W

Description

Enable PA7~PA3 wake up event. 1 / 0: enable / disable.

These bits can be set to low to disable wake up from PA7~PA3 toggling.

Reserved.

7 - 3 11111 WO

2 - 1

0

-

Enable PA0 wake up event and interrupt request. 1 / 0: enable / disable.

This bit can be set to low to disable wake up from PA0 toggling and interrupt request from

this pin.

1

WO

6.10.Port B Digital Input Enable Register (pbdier), IO address = 0x0e

Bit

Reset R/W

Description

Enable PB7~PB0 wake up event. 1 / 0: enable / disable.

These bits can be set to low to disable wake up from PB7~PB0 toggling.

7 - 0

FF WO

6.11.Port A Data Registers (pa), IO address = 0x10

Bit

Reset R/W

Description

7 - 0 8’h00 R/W Data registers for Port A.

6.12.Port A Control Registers (pac), IO address = 0x11

Bit

Reset R/W

Description

Port A control registers. This register is used to define input mode or output mode for each

corresponding pin of port A. 0 / 1: input / output.

7 - 0 8’h00 R/W

6.13.Port A Pull-High Registers (paph), IO address = 0x12

Bit

Reset R/W

Description

Port A pull-high registers. This register is used to enable the internal pull-high device on

each corresponding pin of port A. 0 / 1 : disable / enable

7 - 0 8’h00 R/W

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6.14.Port B Data Registers (pb), IO address = 0x14

Bit

Reset R/W

Description

7 - 0 8’h00 R/W Data registers for Port B.

6.15.Port B Control Registers (pbc), IO address = 0x15

Bit

Reset R/W

Description

Port B control registers. This register is used to define input mode or output mode for each

corresponding pin of port B. 0 / 1: input / output.

7 - 0 8’h00 R/W

6.16.Port B Pull-High Registers (pbph), IO address = 0x16

Bit

Reset R/W

Description

Port B pull-high registers. This register is used to enable the internal pull-high device on

each corresponding pin of port B. 0 / 1 : disable / enable

7 - 0 8’h00 R/W

6.17.MISC Register (misc), IO address = 0x08

Bit

Reset R/W

Description

7 - 6

-

Reserved. (keep 0 for future compatibility)

Enable fast Wake up. Fast wake-up is NOT supported when EOSC is enabled.

0: Normal wake up.

5

4

0

WO

The wake-up time is 3000 ILRC clocks (Not for fast boot-up)

1: Fast wake up.

The wake-up time is 45 ILRC clocks.

Enabled VDD/2 for LCD application.

0 / 1 : disabled / enabled (ICE cannot be dynamically switched)

0

WO

If Code Option selects LCD output, but MISC.4 does not set to 1, then the VDD/2 bias

cannot be output on the IC. However, the emulator is always OK. Two above phenomena

are different.

3

2

-

Reserved.

Disable LVR function.

0 / 1 : Enable / Disable

Watch dog time out period

00: 8192 ILRC clock period

0

WO

1 - 0

00

WO 01: 16384 ILRC clock period

10: 65536 ILRC clock period

11: 262144 ILRC clock period

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6.18.Timer2 Control Register (tm2c), IO address = 0x1c

Bit Reset

R/W

Description

Timer2 clock selection.

0000 : disable

0001 : CLK

0010 : IHRC

0011 : EOSC

0100 : ILRC

0101 : comparator output

1000 : PA0 (rising edge)

1001 : ~PA0 (falling edge)

1010 : PB0 (rising edge)

1011 : ~PB0 (falling edge)

1100 : PA4 (rising edge)

1101 : ~PA4 (falling edge)

Others: reserved

7 - 4

0000 R/W

Notice: In ICE mode and IHRC is selected for Timer2 clock, the clock sent to Timer2

does NOT be stopped, Timer2 will keep counting when ICE is in halt state.

Timer2 output selection.

00 : disable

3 - 2

00

R/W 01 : PB2

10 : PA3

11 : PB4

Timer2 mode selection.

0 / 1 : period mode / PWM mode

Enable to inverse the polarity of Timer2 output.

0 / 1: disable / enable

1

0

R/W

6.19.Timer2 Counter Register (tm2ct), IO address = 0x1d

Bit

Reset R/W

Description

7 - 0

0x00 R/W Bit [7:0] of Timer2 counter register.

6.20.Timer2 Scalar Register (tm2s), IO address = 0x17

Bit

Reset R/W

Description

PWM resolution selection.

1 : 6-bit

7

0

WO 0 : 8-bit

Timer2 clock pre-scalar.

00 : ÷ 1

6 - 5

00

WO 01 : ÷ 4

10 : ÷ 16

11 : ÷ 64

4 - 0 00000 WO Timer2 clock scalar.

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6.21.Timer2 Bound Register (tm2b), IO address = 0x09

Bit

Reset R/W

Description

7 - 0

0x00 WO Timer2 bound register.

6.22.Timer3 Control Register (tm3c), IO address = 0x32

Bit Reset

R/W

Description

Timer3 clock selection.

0000 : disable

0001 : CLK

0010 : IHRC

0011 : EOSC

0100 : ILRC

0101 : comparator output

1000 : PA0 (rising edge)

1001 : ~PA0 (falling edge)

1010 : PB0 (rising edge)

1011 : ~PB0 (falling edge)

1100 : PA4 (rising edge)

1101 : ~PA4 (falling edge)

Others: reserved

7 - 4

0000 R/W

Notice: In ICE mode and IHRC is selected for Timer3 clock, the clock sent to Timer3

does NOT be stopped, Timer3 will keep counting when ICE is in halt state.

Timer3 output selection.

00 : disable

3 - 2

00

R/W 01 : PB5

10 : PB6

11 : PB7

Timer3 mode selection.

0 / 1 : period mode / PWM mode

Enable to inverse the polarity of Timer3 output.

0 / 1: disable / enable

1

0

R/W

6.23.Timer3 Counter Register (tm3ct), IO address = 0x33

Bit

Reset R/W

0x00 R/W Bit [7:0] of Timer2 counter register.

Description

7 - 0

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6.24.Timer3 Scalar Register (tm3s), IO address = 0x34

Bit

Reset R/W

Description

PWM resolution selection.

7

0

WO 0 : 8-bit

1 : 6-bit

Timer3 clock pre-scalar.

00 : ÷ 1

6 - 5

00

WO 01 : ÷ 4

10 : ÷ 16

11 : ÷ 64

4 - 0 00000 WO Timer3 clock scalar.

6.25.Timer3 Bound Register (tm3b), IO address = 0x35

Bit

Reset R/W

0x00 WO Timer3 bound register.

Description

7 - 0

6.26.Comparator Control Register (gpcc), IO address = 0x18

Bit

Reset R/W

Description

Enable comparator.

0 / 1 : disable / enable

7

0

R/W

When this bit is set to enable, please also set the corresponding analog input pins to be

digital disable to prevent IO leakage.

Comparator result of comparator.

6

5

4

-

RO 0: plus input < minus input

1: plus input > minus input

Select whether the comparator result output will be sampled by TM2_CLK?

R/W 0: result output NOT sampled by TM2_CLK

1: result output sampled by TM2_CLK

Inverse the polarity of result output of comparator.

R/W 0: polarity is NOT inversed.

1: polarity is inversed.

0

Selection the minus input (-) of comparator.

000 : PA3

001 : PA4

010 : Internal 1.20 volt band-gap reference voltage

3 - 1

000

R/W

011 : V_{internal R}

100 : PB6 (not for EV5)

101: PB7 (not for EV5)

11X: reserved

Selection the plus input (+) of comparator.

R/W 0 : V_{internal R}

0

1 : PA4

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6.27.Comparator Selection Register (gpcs), IO address = 0x19

Bit

Reset R/W

Description

Comparator output enable (to PA0).

0 / 1 : disable / enable

7

0

WO

(Please avoid this situation: GPCS will affect the PA3 output function when selecting

output to PA0 in ICE.)

Reserved.

6

5

4

-

0

WO Selection of high range of comparator.

WO Selection of low range of comparator.

Selection the voltage level of comparator.

3 - 0

0000

WO

0000 (lowest) ~ 1111 (highest)

6.28.PWMG0 control Register (pwmg0c), IO address = 0x20

Bit

7

Reset

R/W

RO

Description

0

-

Enable PWMG0 generator. 0 / 1: disable / enable.

Output status of PWMG0 generator.

6

5

0

R/W

Enable to inverse the polarity of PWMG0 generator output. 0 / 1 : disable / enable.

PWMG0 counter reset.

4

0

R/W

Writing “1” to clear PWMG0 counter.

Select PWM output pin for PWMG0.

000: none

001: PB5

3 - 1

0

R/W

011: PA0

100: PB4

Others: reserved

0

Clock source of PWMG0 generator. 0: CLK*2, 1: IHRC*2

6.29.PWMG0 Scalar Register (pwmg0s), IO address = 0x21

Bit

Reset

R/W

Description

PWMG0 interrupt mode.

7

0

R/W 0: Generate interrupt when counter matches the duty value

1: Generate interrupt when counter is 0

PWMG0 clock pre-scalar.

00 : ÷1

R/W 01 : ÷4

10 : ÷16

6 - 5

4 - 0

0

11 : ÷64

R/W PWMG0 clock divider

6.30.PWMG0 Counter Upper Bound High Register (pwmg0cubh), IO address = 0x24

Bit

Reset

R/W

Description

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7 - 0

-

WO

Bit[10:3] of PWMG0 counter upper bound.

6.31.PWMG0 Counter Upper Bound Low Register (pwmg0cubl), IO address = 0x25

Bit

Reset

R/W

WO

-

Description

Bit[2:1] of PWMG0 counter upper bound.

Reserved

7 - 6

5 - 0

-

6.32.PWMG0 Duty Value High Register (pwmg0dth), IO address = 0x22

Bit

Reset

-

R/W

WO

Description

7 - 0

Duty values bit[10:3] of PWMG0.

6.33.PWMG0 Duty Value Low Register (pwmg0dtl), IO address = 0x23

Bit

Reset

R/W

WO

-

Description

7 - 5

4 - 0

-

Duty values bit [2:0] of PWMG0.

Reserved

Note: It’s necessary to write PWMG0 Duty_Value Low Register before writing PWMG0 Duty_Value High Register.

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7. Instructions

Symbol

Description

ACC

a

Accumulator ( Abbreviation of accumulator )

Accumulator ( Symbol of accumulator in program )

sp

flag

I

Stack pointer

ACC status flag register

Immediate data

&

Logical AND

|

Logical OR

←

^

Movement

Exclusive logic OR

+

Add

－

〜

〒

OV

Z

Subtraction

NOT (logical complement, 1’s complement)

NEG (2’s complement)

Overflow (The operational result is out of range in signed 2’s complement number system)

Zero (If the result of ALU operation is zero, this bit is set to 1)

Carry (The operational result is to have carry out for addition or to borrow carry for subtraction

in unsigned number system)

C

Auxiliary Carry (If there is a carry out from low nibble after the result of ALU operation, this bit is

set to 1)

AC

IO.n

M.n,

The bit of register

Only addressed in 0~0x3F (0~63) is allowed

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7.1. Data Transfer Instructions

mov

a, I

Move immediate data into ACC.

Example: mov a, 0x0f;

Result: a ← 0fh;

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

M, a

a, M

Move data from ACC into memory

Example: mov

MEM, a;

Result: MEM ← a

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Move data from memory into ACC

Example: mov

a, MEM ;

Result: a ← MEM; Flag Z is set when MEM is zero.

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

a, IO

Move data from IO into ACC

Example: mov

a, pa ;

Result: a ← pa; Flag Z is set when pa is zero.

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

IO, a

Move data from ACC into IO

Example: mov

Result: pa ← a

pa, a;

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Move 16-bit counting values in Timer16 to memory in word.

Example: ldt16 word;

ldt16 word

Result:

word ← 16-bit timer

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

word

…

T16val ;

// declare a RAM word

clear

stt16

…

lb@ T16val ;

hb@ T16val ;

T16val ;

// clear T16val (LSB)

// clear T16val (MSB)

// initial T16 with 0

set1

…

t16m.5 ;

// enable Timer16

set0

ldt16

….

t16m.5 ;

T16val ;

// disable Timer 16

// save the T16 counting value to T16val

------------------------------------------------------------------------------------------------------------------------

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stt16 word

Store 16-bit data from memory in word to Timer16.

Example: stt16 word;

Result:

16-bit timer ←word

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

word

…

T16val ;

// declare a RAM word

mov

stt16

…

a, 0x34 ;

lb@ T16val , a ; // move 0x34 to T16val (LSB)

a, 0x12 ;

hb@ T16val , a ; // move 0x12 to T16val (MSB)

T16val ;

// initial T16 with 0x1234

----------------------------------------------------------------------------------------------------------------------

idxm a, index Move data from specified memory to ACC by indirect method. It needs 2T to execute this

instruction.

Example: idxm a, index;

Result:

a ← [index], where index is declared by word.

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Application Example:

-----------------------------------------------------------------------------------------------------------------------

word

…

RAMIndex ;

// declare a RAM pointer

mov

…

a, 0x5B ;

// assign pointer to an address (LSB)

// save pointer to RAM (LSB)

lb@RAMIndex, a ;

a, 0x00 ;

// assign 0x00 to an address (MSB), should be 0

hb@RAMIndex, a ; // save pointer to RAM (MSB)

idxm

a, RAMIndex ; // move memory data in address 0x5B to ACC

------------------------------------------------------------------------------------------------------------------------

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PMS154B

8bit OTP IO IO Controller

Idxm index, a Move data from ACC to specified memory by indirect method. It needs 2T to execute this

instruction.

Example: idxm index, a;

Result:

[index] ← a; where index is declared by word.

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

word

…

RAMIndex ;

// declare a RAM pointer

mov

…

a, 0x5B ;

// assign pointer to an address (LSB)

// save pointer to RAM (LSB)

lb@RAMIndex, a ;

a, 0x00 ;

// assign 0x00 to an address (MSB), should be 0

hb@RAMIndex, a ; // save pointer to RAM (MSB)

mov

idxm

a, 0xA5 ;

RAMIndex, a ;

// move 0xA5 to memory in address 0x5B

------------------------------------------------------------------------------------------------------------------------

Exchange data between ACC and memory

xch

M

Example: xch MEM ;

Result:

MEM ← a , a ← MEM

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Move the ACC and flag register to memory that address specified in the stack pointer.

Example: pushaf;

pushaf

Result:

[sp] ← {flag, ACC};

sp ← sp + 2 ;

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

.romadr 0x10 ;

// ISR entry address

pushaf ;

…

// put ACC and flag into stack memory

// ISR program

…

// ISR program

popaf ;

reti ;

// restore ACC and flag from stack memory

------------------------------------------------------------------------------------------------------------------------

Restore ACC and flag from the memory which address is specified in the stack pointer.

Example: popaf;

popaf

Result:

sp ← sp - 2

{Flag, ACC} ← [sp] ;

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

;

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8bit OTP IO IO Controller

7.2. Arithmetic Operation Instructions

add

a, I

Add immediate data with ACC, then put result into ACC

Example: add a, 0x0f ;

Result: a ← a + 0fh

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

a, M

M, a

Add data in memory with ACC, then put result into ACC

Example: add

a, MEM ;

Result: a ← a + MEM

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Add data in memory with ACC, then put result into memory

Example: add

MEM, a;

Result: MEM ← a + MEM

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

addc a, M

addc M, a

Add data in memory with ACC and carry bit, then put result into ACC

Example: addc

a, MEM ;

Result: a ← a + MEM + C

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Add data in memory with ACC and carry bit, then put result into memory

Example: addc

MEM, a ;

Result: MEM ← a + MEM + C

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

addc

a

Add carry with ACC, then put result into ACC

Example: addc

a ;

Result: a ← a + C

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

M

Add carry with memory, then put result into memory

Example: addc

MEM ;

Result: MEM ← MEM + C

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

nadd a, M

nadd M, a

Add negative logic (2’s complement) of ACC with memory

Example: nadd

a, MEM ;

Result: a ← 〒a + MEM

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Add negative logic (2’s complement) of memory with ACC

Example: nadd

MEM, a ;

Result: MEM ← 〒MEM + a

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

sub

a, I

Subtraction immediate data from ACC, then put result into ACC.

Example: sub

a, 0x0f;

Result: a ← a - 0fh ( a + [2’s complement of 0fh] )

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

a, M

Subtraction data in memory from ACC, then put result into ACC

Example: sub

Result: a ← a - MEM ( a + [2’s complement of M] )

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

a, MEM ;

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8bit OTP IO IO Controller

sub

M, a

Subtraction data in ACC from memory, then put result into memory

Example: sub

MEM, a;

Result: MEM ← MEM - a ( MEM + [2’s complement of a] )

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

subc a, M

subc M, a

Subtraction data in memory and carry from ACC, then put result into ACC

Example: subc

a, MEM;

Result: a ← a – MEM - C

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Subtraction ACC and carry bit from memory, then put result into memory

Example: subc

MEM, a ;

Result: MEM ← MEM – a - C

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

subc

inc

a

Subtraction carry from ACC, then put result into ACC

Example: subc

a;

Result: a ← a - C

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

M

Subtraction carry from the content of memory, then put result into memory

Example: subc

MEM;

Result: MEM ← MEM - C

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

M

Increment the content of memory

Example: inc

MEM ;

Result: MEM ← MEM + 1

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

dec

M

Decrement the content of memory

Example: dec

MEM;

Result: MEM ← MEM - 1

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

clear

M

Clear the content of memory

Example: clear

Result: MEM ← 0

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

MEM ;

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8bit OTP IO IO Controller

7.3. Shift Operation Instructions

sr

a

Shift right of ACC, shift 0 to bit 7

Example: sr a ;

Result: a (0,b7,b6,b5,b4,b3,b2,b1) ← a (b7,b6,b5,b4,b3,b2,b1,b0), C ← a(b0)

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Shift right of ACC with carry bit 7 to flag

src

sr

a

Example: src a ;

Result: a (c,b7,b6,b5,b4,b3,b2,b1) ← a (b7,b6,b5,b4,b3,b2,b1,b0), C ← a(b0)

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Shift right the content of memory, shift 0 to bit 7

Example: sr MEM ;

M

Result: MEM(0,b7,b6,b5,b4,b3,b2,b1) ← MEM(b7,b6,b5,b4,b3,b2,b1,b0), C ← MEM(b0)

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Shift right of memory with carry bit 7 to flag

src

sl

M

Example: src MEM ;

Result: MEM(c,b7,b6,b5,b4,b3,b2,b1) ← MEM (b7,b6,b5,b4,b3,b2,b1,b0), C ← MEM(b0)

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Shift left of ACC shift 0 to bit 0

a

Example: sl a ;

Result: a (b6,b5,b4,b3,b2,b1,b0,0) ← a (b7,b6,b5,b4,b3,b2,b1,b0), C ← a (b7)

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Shift left of ACC with carry bit 0 to flag

slc

sl

a

Example: slc a ;

Result: a (b6,b5,b4,b3,b2,b1,b0,c) ← a (b7,b6,b5,b4,b3,b2,b1,b0), C ← a(b7)

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Shift left of memory, shift 0 to bit 0

M

Example: sl MEM ;

Result: MEM (b6,b5,b4,b3,b2,b1,b0,0) ← MEM (b7,b6,b5,b4,b3,b2,b1,b0), C ← MEM(b7)

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Shift left of memory with carry bit 0 to flag

slc

M

Example: slc MEM ;

Result: MEM (b6,b5,b4,b3,b2,b1,b0,C) ← MEM (b7,b6,b5,b4,b3,b2,b1,b0), C ← MEM (b7)

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Swap the high nibble and low nibble of ACC

swap

a

Example: swap

Result: a (b3,b2,b1,b0,b7,b6,b5,b4) ← a (b7,b6,b5,b4,b3,b2,b1,b0)

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

a ;

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8bit OTP IO IO Controller

7.4. Logic Operation Instructions

and

or

a, I

a, M

M, a

a, I

Perform logic AND on ACC and immediate data, then put result into ACC

Example: and a, 0x0f ;

Result: a ← a & 0fh

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

Perform logic AND on ACC and memory, then put result into ACC

Example: and

a, RAM10 ;

Result: a ← a & RAM10

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

Perform logic AND on ACC and memory, then put result into memory

Example: and

MEM, a ;

Result: MEM ← a & MEM

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

Perform logic OR on ACC and immediate data, then put result into ACC

Example: or

a, 0x0f ;

Result: a ← a | 0fh

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

or

a, M

Perform logic OR on ACC and memory, then put result into ACC

Example: or

a, MEM ;

Result: a ← a | MEM

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

or

M, a

a, I

Perform logic OR on ACC and memory, then put result into memory

Example: or

MEM, a ;

Result: MEM ← a | MEM

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

xor

Perform logic XOR on ACC and immediate data, then put result into ACC

Example: xor

a, 0x0f ;

Result: a ← a ^ 0fh

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

IO, a

Perform logic XOR on ACC and IO register, then put result into IO register

Example: xor

pa, a ;

Result: pa ← a ^ pa ; // pa is the data register of port A

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

xor

a, M

M, a

Perform logic XOR on ACC and memory, then put result into ACC

Example: xor

a, MEM ;

Result: a ← a ^ RAM10

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

Perform logic XOR on ACC and memory, then put result into memory

Example:

xor

MEM, a ;

Result:

MEM ← a ^ MEM

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

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not

a

Perform 1’s complement (logical complement) of ACC

Example: not a ;

Result: a ← 〜a

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

mov

not

a, 0x38 ;

a ;

// ACC=0X38

// ACC=0XC7

------------------------------------------------------------------------------------------------------------------------

Perform 1’s complement (logical complement) of memory

not

M

Example: not

MEM ;

Result: MEM ← 〜MEM

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

mov

not

a, 0x38 ;

mem, a ;

mem ;

// mem = 0x38

// mem = 0xC7

------------------------------------------------------------------------------------------------------------------------

Perform 2’s complement of ACC

neg

a

Example: neg

a;

Result: a ← 〒a

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

mov

neg

a, 0x38 ;

a ;

// ACC=0X38

// ACC=0XC8

------------------------------------------------------------------------------------------------------------------------

Perform 2’s complement of memory

neg

M

Example: neg

MEM;

Result: MEM ← 〒MEM

Affected flags: 『Y』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

mov

not

a, 0x38 ;

mem, a ;

mem ;

// mem = 0x38

// mem = 0xC8

------------------------------------------------------------------------------------------------------------------------

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comp

a, M

Compare ACC with the content of memory

Example: comp a, MEM;

Result: Flag will be changed by regarding as ( a - MEM )

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

mov

comp

mov

comp

a, 0x38 ;

mem, a ;

a, mem ; // Z flag is set

a, 0x42 ;

mem, a ;

a, 0x38 ;

a, mem ; // C flag is set

------------------------------------------------------------------------------------------------------------------------

Compare ACC with the content of memory

comp

M, a

Example: comp

Result: Flag will be changed by regarding as ( MEM - a )

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

MEM, a;

7.5. Bit Operation Instructions

set0 IO.n

set1 IO.n

set0 M.n

set1 M.n

Set bit n of IO port to low

Example: set0 pa.5 ;

Result:

set bit 5 of port A to low

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Set bit n of IO port to high

Example: set1 pa.5 ;

Result:

set bit 5 of port A to high

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Set bit n of memory to low

Example: set0 MEM.5 ;

Result:

set bit 5 of MEM to low

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Set bit n of memory to high

Example: set1 MEM.5 ;

Result:

set bit 5 of MEM to high

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

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8bit OTP IO IO Controller

swapc IO.n

Swap the nth bit of IO port with carry bit

Example: swapc IO.0;

Result: C ← IO.0 , IO.0 ← C

When IO.0 is a port to output pin, carry C will be sent to IO.0;

When IO.0 is a port from input pin, IO.0 will be sent to carry C;

Affected flags: 『N』Z 『Y』C 『N』AC 『N』OV

Application Example1 (serial output) :

------------------------------------------------------------------------------------------------------------------------

...

set1

...

pac.0 ;

// set PA.0 as output

set0

swapc

set1

swapc

...

flag.1 ;

pa.0 ;

// C=0

// move C to PA.0 (bit operation), PA.0=0

// C=1

flag.1 ;

pa.0 ;

// move C to PA.0 (bit operation), PA.0=1

------------------------------------------------------------------------------------------------------------------------

Application Example2 (serial input) :

------------------------------------------------------------------------------------------------------------------------

...

set0

...

pac.0 ;

// set PA.0 as input

swapc

src

pa.0 ;

a ;

// read PA.0 to C (bit operation)

// shift C to bit 7 of ACC

swapc

src

pa.0 ;

a ;

// read PA.0 to C (bit operation)

// shift new C to bit 7, old C

...

------------------------------------------------------------------------------------------------------------------------

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8bit OTP IO IO Controller

7.6. Conditional Operation Instructions

ceqsn a, I

Compare ACC with immediate data and skip next instruction if both are equal.

Flag will be changed like as (a ← a - I)

Example: ceqsn

a, 0x55 ;

MEM ;

inc

goto

error ;

Result: If a=0x55, then “goto error”; otherwise, “inc MEM”.

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Compare ACC with memory and skip next instruction if both are equal.

Flag will be changed like as (a ← a - M)

ceqsn a, M

cneqsn a, M

cneqsn a, I

Example: ceqsn

a, MEM;

Result: If a=MEM, skip next instruction

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Compare ACC with memory and skip next instruction if both are not equal.

Flag will be changed like as (a ← a - M)

Example: cneqsn

a, MEM;

Result: If a≠MEM, skip next instruction

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Compare ACC with immediate data and skip next instruction if both are no equal.

Flag will be changed like as (a ← a - I)

Example: cneqsn

a,0x55 ;

MEM ;

error ;

inc

goto

Result: If a≠0x55, then “goto error”; Otherwise, “inc MEM”.

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

Check IO bit and skip next instruction if it’s low

t0sn IO.n

t1sn IO.n

Example: t0sn

pa.5;

Result: If bit 5 of port A is low, skip next instruction

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Check IO bit and skip next instruction if it’s high

Example: t1sn

pa.5 ;

Result: If bit 5 of port A is high, skip next instruction

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

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t0sn M.n

t1sn M.n

Check memory bit and skip next instruction if it’s low

Example: t0sn MEM.5 ;

Result: If bit 5 of MEM is low, then skip next instruction

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Check memory bit and skip next instruction if it’s high

Example: t1sn MEM.5 ;

Result: If bit 5 of MEM is high, then skip next instruction

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Increment ACC and skip next instruction if ACC is zero

izsn

dzsn

izsn

dzsn

a

Example: izsn

Result:

a;

a

←

a + 1,skip next instruction if a = 0

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

a

Decrement ACC and skip next instruction if ACC is zero

Example: dzsn

Result:

a;

A

←

A - 1,skip next instruction if a = 0

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

M

Increment memory and skip next instruction if memory is zero

Example: izsn

Result: MEM

MEM;

MEM + 1, skip next instruction if MEM= 0

←

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

M

Decrement memory and skip next instruction if memory is zero

Example: dzsn

Result: MEM

Affected flags: 『Y』Z 『Y』C 『Y』AC 『Y』OV

MEM;

←

MEM - 1, skip next instruction if MEM = 0

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8bit OTP IO IO Controller

7.7. System control Instructions

call

label

Function call, address can be full range address space

Example: call

function1;

pc + 1

Result: [sp]

←

pc

sp

←

function1

sp + 2

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

goto label

Go to specific address which can be full range address space

Example: goto

error;

Result: Go to error and execute program.

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Place immediate data to ACC, then return

Example: ret 0x55;

ret

I

Result:

A ← 55h

ret ;

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Return to program which had function call

Example: ret;

Result: sp ← sp - 2

pc ← [sp]

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

reti

Return to program that is interrupt service routine. After this command is executed, global

interrupt is enabled automatically.

Example: reti;

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

nop

No operation

Example: nop;

Result: nothing changed

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

pcadd

a

Next program counter is current program counter plus ACC.

Example: pcadd a;

Result: pc ← pc + a

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

…

mov

pcadd

goto

…

a, 0x02 ;

a ;

// PC <- PC+2

// jump here

err1 ;

correct ;

err2 ;

err3 ;

correct:

…

// jump here

------------------------------------------------------------------------------------------------------------------------

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8bit OTP IO IO Controller

engint

Enable global interrupt enable

Example: engint;

Result: Interrupt request can be sent to FPP0

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Disable global interrupt enable

disgint

stopsys

stopexe

Example: disgint ;

Result: Interrupt request is blocked from FPP0

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

System halt.

Example: stopsys;

Result: Stop the system clocks and halt the system

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

CPU halt. The oscillator module is still active to output clock, however, system clock is disabled

to save power.

Example: stopexe;

Result: Stop the system clocks and keep oscillator modules active.

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Reset the whole chip, its operation will be same as hardware reset.

Example: reset;

reset

Result: Reset the whole chip.

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

Reset Watchdog timer.

wdreset

Example: wdreset ;

Result: Reset Watchdog timer.

Affected flags: 『N』Z 『N』C 『N』AC 『N』OV

7.8. Summary of Instructions Execution Cycle

goto, call, idxm, pcadd, ret, reti

2T

1T

Condition is fulfilled.

ceqsn, cneqsn,t0sn, t1sn, dzsn, izsn

Condition is not fulfilled.

Others

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8bit OTP IO IO Controller

7.9. Summary of affected flags by Instructions

Instruction

mov a, I

Z

-

C

-

AC OV Instruction

Z

-

C

-

AC OV Instruction

Z

Y

-

C

-

AC OV

-

mov M, a

mov IO, a

idxm a, index

pushaf

-

mov a, M

ldt16 word

idxm index, a

popaf

-

mov a, IO

stt16 word

Y

-

xch

M

-

Y

-

Y

-

Y

-

Y

-

add a, I

Y

-

Y

-

Y

-

Y

-

add a, M

addc M, a

sub a, I

Y

-

Y

-

Y

-

Y

-

add M, a

addc a, M

addc

a

addc

M

sub a, M

sub M, a

subc a, M

subc M, a

subc

dec

src

a

subc

clear

M

inc

sr a

src

sl

M

a

sr

M

-

Y

-

sl

a

-

slc

a

-

M

-

slc

and

M

-

swap

and

a

-

and

a, I

Y

-

a, M

Y

-

M, a

Y

-

or a, I

-

or a, M

-

or M, a

-

xor

neg

a, I

-

xor

not

neg

IO, a

-

xor

not

a, M

-

M, a

a

-

a

Y

-

M

-

M

-

set0 IO.n

set1 M.n

t0sn IO.n

t1sn M.n

-

set1 IO.n

ceqsn a, I

t1sn IO.n

-

set0 M.n

ceqsn a, M

t0sn M.n

-

Y

-

Y

-

Y

-

Y

-

Y

-

Y

-

Y

-

Y

-

izsn

dzsn

ret

a

Y

-

Y

-

Y

-

Y

-

dzsn

call

a

Y

-

Y

-

Y

-

Y

-

izsn

M

Y

-

Y

-

Y

-

Y

-

M

label

goto label

reti

I

ret

-

nop

-

pcadd

a

-

engint

-

disgint

-

stopsys

-

stopexe

-

Y

-

Y

-

Y

-

reset

-

nadd M, a

cneqsn a, I

nadd a, M

wdreset

Y

cneqsn a, M

comp a, M

swapc IO.n

Y

comp

M, a

7.10. BIT definition

Bit defined: Only addressed at 0x00 ~ 0x3F.

Page 80 of 85

PDK-DS-PMS154B-EN-V102 – Nov. 27, 2018

PMS154B

8bit OTP IO IO Controller

8. Code Options

Option

Selection

Description

Enable

Disable

4.0V

Security Enable

Security

Security Disable

Select LVR = 4.0V

3.5V

Select LVR = 3.5V

3.0V

Select LVR = 3.0V

2.75V

2.5V

Select LVR = 2.75V

LVR

Select LVR = 2.5V

2.2V

Select LVR = 2.2V

2.0V

Select LVR = 2.0V

1.8V

Select LVR = 1.8V

Slow

Fast

Please refer to t_WUPand t_SBPin Section 4.1

IO Low driving and sinking current

IO Normal driving and sinking current

Boot-up_Time

Low

Drive

LCD2

Normal

Disable

VDD/2 bias voltage generator disabled, PB0 PA[0,3,4] are normal IO pins

(please refer to

MISC.4)

PB0_A034 VDD/2 bias voltage generator enabled, PB0 PA[0,3,4] are VDD/2 if input mode

Page 81 of 85

PDK-DS-PMS154B-EN-V102 – Nov. 27, 2018

PMS154B

8bit OTP IO IO Controller

9. Special Notes

This chapter is to remind user who use PMS154B series IC in order to avoid frequent errors upon operation.

9.1. Warning

User must read all application notes of the IC by detail before using it. Please download the related

application notes from the following link: http://www.padauk.com.tw/tw/technical/index.aspx

9.2. Using IC

9.2.1. IO pin usage and setting

(1) IO pin as digital input

 When IO is set as digital input, the level of Vih and Vil would changes with the voltage and temperature.

Please follow the minimum value of Vih and the maximum value of Vil.

 The value of internal pull high resistor would also changes with the voltage, temperature and pin

voltage. It is not the fixed value.

(2) If IO pin is set to be digital input and enable wake-up function

 Configure IO pin as input.

 Set corresponding bit to “1” in PXDIER.

 For those IO pins of PA that are not used, PADIER[1:2] should be set low in order to prevent them from

leakage.

(3) PA5 is set to be output pin

 PA5 can be set to be Open-Drain output pin only, output high requires adding pull-up resistor.

(4) PA5 is set to be PRST# input pin

 Configure PA5 as input

 Set CLKMD.0=1 to enable PA5 as PRST# input pin

(5) PA5 is set to be input pin and to connect with a push button or a switch by a long wire

 Needs to put a >10Ω resistor in between PA5 and the long wire

 Avoid using PA5 as input in such application.

(6) PA7 and PA6 as external crystal oscillator



Configure PA7 and PA6 as input

Disable PA7 and PA6 internal pull-up resistor

Configure PADIER register to set PA6 and PA7 as analog input

EOSCR register bit [6:5] selects corresponding crystal oscillator frequency :



01 : for lower frequency, ex : 32KHz

10 : for middle frequency, ex : 455KHz, 1MHz

11 : for higher frequency, ex : 4MHz

Page 82 of 85

PDK-DS-PMS154B-EN-V102 – Nov. 27, 2018

PMS154B

8bit OTP IO IO Controller



Program EOSCR.7 =1 to enable crystal oscillator

Ensure EOSC working well before switching from IHRC or ILRC to EOSC

Note: Please read the PMC-APN013 carefully. According to PMC-APN013,, the crystal oscillator should

be used reasonably. If the following situations happen to cause IC start-up slowly or non-startup, PADAUK

Technology is not responsible for this: the quality of the user's crystal oscillator is not good, the usage

conditions are unreasonable, the PCB cleaner leakage current, or the PCB layouts are unreasonable.

9.2.2. Interrupt

(1) When using the interrupt function, the procedure should be:

Step1: Set INTEN register, enable the interrupt control bit

Step2: Clear INTRQ register

Step3: In the main program, using ENGINT to enable CPU interrupt function

Step4: Wait for interrupt. When interrupt occurs, enter to Interrupt Service Routine

Step5: After the Interrupt Service Routine being executed, return to the main program

* Use DISGINT in the main program to disable all interrupts

* When interrupt service routine starts, use PUSHAF instruction to save ALU and FLAG

register. POPAF instruction is to restore ALU and FLAG register before RETI as below:

void Interrupt (void)

{

// Once the interrupt occurs, jump to interrupt service routine

// enter DISGINT status automatically, no more interrupt is

accepted

PUSHAF;

…

POPAF;

}

// RETI will be added automatically. After RETI being executed, ENGINT status

will be restored

(2) INTEN and INTRQ have no initial values. Please set required value before enabling interrupt function.

9.2.3. System clock switching

System clock can be switched by CLKMD register. Please notice that, NEVER switch the system clock and

turn off the original clock source at the same time. For example: When switching from clock A to clock B,

please switch to clock B first; and after that turn off the clock A oscillator through CLKMD.



Example : Switch system clock from ILRC to IHRC/2

CLKMD

=

0x36;

0;

// switch to IHRC, ILRC can not be disabled here

CLKMD.2 =

// ILRC can be disabled at this time



ERROR: Switch ILRC to IHRC and turn off ILRC simultaneously

CLKMD 0x50; // MCU will hang

=

9.2.4. Watchdog

Watchdog will be inactive once ILRC is disabled.

Page 83 of 85

PDK-DS-PMS154B-EN-V102 – Nov. 27, 2018

PMS154B

8bit OTP IO IO Controller

9.2.5. TIMER time out

When select $ INTEGS BIT_R (default value) and T16M counter BIT8 to generate interrupt, if T16M

counts from 0, the first interrupt will occur when the counter reaches to 0x100 (BIT8 from 0 to 1) and the

second interrupt will occur when the counter reaches 0x300 (BIT8 from 0 to 1). Therefore, selecting BIT8 as

1 to generate interrupt means that the interrupt occurs every 512 counts. Please notice that if T16M counter

is restarted, the next interrupt will occur once Bit8 turns from 0 to 1.

If select $ INTEGS BIT_F(BIT triggers from 1 to 0) and T16M counter BIT8 to generate interrupt, the T16M

counter changes to an interrupt every 0x200/0x400/0x600/. Please pay attention to two differences with

setting INTEGS methods.

9.2.6. IHRC

(1)

The IHRC frequency calibration is performed when IC is programmed by the writer.

Because the characteristic of the Epoxy Molding Compound (EMC) would some degrees affects the

IHRC frequency (either for package or COB), if the calibration is done before molding process, the

actual IHRC frequency after molding may be deviated or becomes out of spec. Normally , the

frequency is getting slower a bit.

(2)

(3)

(4)

It usually happens in COB package or Quick Turnover Programming (QTP). And PADAUK would not

take any responsibility for this situation.

Users can make some compensatory adjustments according to their own experiences. For example,

users can set IHRC frequency to be 0.5% ~ 1% higher and aim to get better re-targeting after molding.

9.2.7. LVR

User can set MISC.2 as “1” to disable LVR. However, VDD must be kept as exceeding the lowest working

voltage of chip; Otherwise IC may work abnormally.

9.2.8. Program writing

There are 6 pins for using the writer to program: PA3, PA4, PA5, PA6, V_DD, and GND.

Please use PDK3S-P-002 to program and put the PMS154B-S14 to move down one space over the CN39.

Put the PMS154B-M10 to move down three spaces over it. Put the PMS154B-S08 to move down four

spaces over it. Other packages could be programmed by user’s way. All the left signs behind the jumper are

the same (there are V_DD, PA0(not required), PA3, PA4, PA5, PA6, PA7(not required), and GND).The

following picture is shown:

Page 84 of 85

PDK-DS-PMS154B-EN-V102 – Nov. 27, 2018

PMS154B

8bit OTP IO IO Controller

If user use PDK5S-P-003 or above to program, please follow the instruction.

 Special notes about voltage and current while Multi-Chip-Package(MCP) or On-Board Programming

(1)PA5 (V_PP) may be higher than 11V.

(2)V_DDmay be higher than 6.5V, and its maximum current may reach about 20mA.

(3)All other signal pins level (except GND) are the same as V_DD..

User should confirm when using this product in MCP or On-Board Programming, the peripheral circuit or

components will not be destroyed or limit the above voltages.

9.3. Using ICE

(1) It is recommended to use PDK5S-I-S01/2(B) for emulation of PMS154B.

(2) PDK5S-I-S01/2(B) supports PMS154B 1-FPPA MCU emulation work, the following items should be

noted when using PDK5S-I-S01/2(B) to emulate PMS154B:



PDK5S-I-S01/2(B) doesn’t support the instruction NADD/COMP of PMS154B.

PDK5S-I-S01/2(B) doesn’t support SYSCLK=ILRC/16 of PMS154B.

PDK5S-I-S01/2(B) doesn’t support the function MISC.LCD_Enable=1(open LCD) of PMS154B.

PDK5S-I-S01/2(B) doesn’t support the dynamic setting of function misc.4 (Only fix to 0 or 1).

PDK5S-I-S01/2(B) doesn’t support the function TM2.GPCRS/TM3.GPCRS of PMS154B

The PA3 output function will be affected when GPCS selects output to PA0.

Fast Wakeup time is different from PDK5S-I-S01/2(B): 128 SysClk, PMS154B: 45 ILRC

Watch dog time out period is different from PDK5S-I-S01/2(B):

WDT period

misc[1:0]=00

misc[1:0]=01

misc[1:0]=10

misc[1:0]=11

PDK5S-I-S01/2(B)

2048 * T_ILRC

PMS154B

8k * T_ILRC

4096 * T_ILRC

16k * T_ILRC

64k * T_ILRC

256k * T_ILRC

16384 * T_ILRC

256 * T_ILRC

Page 85 of 85

PDK-DS-PMS154B-EN-V102 – Nov. 27, 2018


型号：	PMS154B-M10
厂家：	PADAUK Technology
描述：	8bit OTP Type IO Controller
文件：	总85页 (文件大小：1819K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PMS154B-M10 [PADAUK]

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