PMS132 datasheet(4/100 Pages) PADAUK

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PMS132/PMS132B

8bit OTP MCU with 12-bit ADC

Page 4 of 100

PDK-DS-PMS132(B)-EN_V104 – Jun. 2, 2020

5.4.5.

System Clock and LVR level .....................................................................................35

5.4.6.

System Clock Switching ............................................................................................36

5.5.

Comparator ...........................................................................................................................37

5.5.1

Internal reference voltage (Vinternal R)...........................................................................38

5.5.2

Using the comparator ................................................................................................40

5.5.3

Using the comparator and band-gap 1.20V ...............................................................41

5.6

16-bit Timer (Timer16) ..........................................................................................................42

5.7

8-bit Timer (Timer2/Timer3) with PWM generation ................................................................44

5.7.1

Using the Timer2 to generate periodical waveform ....................................................45

5.7.2

Using the Timer2 to generate 8-bit PWM waveform...................................................47

5.7.3

Using the Timer2 to generate 6-bit PWM waveform...................................................48

5.8

11-bit PWM Generator ..........................................................................................................49

5.8.1

PWM Waveform ........................................................................................................49

5.8.2

Hardware and Timing Diagram ..................................................................................50

5.8.3

Equations for 11-bit PWM Generator .........................................................................51

5.8.4

Complementary PWM with Dead Zones ....................................................................51

5.9

WatchDog Timer ...................................................................................................................53

5.10

Interrupt ................................................................................................................................54

5.11

Power-Save and Power-Down ..............................................................................................57

5.11.1 Power-Save mode (“stopexe”) ...................................................................................57

5.11.2 Power-Down mode (“stopsys”) ..................................................................................58

5.11.3 Wake-up....................................................................................................................58

5.12

IO Pins ..................................................................................................................................59

5.13

Reset and LVR......................................................................................................................60

5.13.1 Reset.........................................................................................................................60

5.13.2 LVR reset ..................................................................................................................60

5.14

Analog-to-Digital Conversion (ADC) module .........................................................................61

5.14.1 The input requirement for AD conversion ..................................................................62

5.14.2 Select the reference high voltage ..............................................................................63

5.14.3 ADC clock selection...................................................................................................63

5.14.4 Configure the analog pins..........................................................................................63

5.14.5 Using the ADC...........................................................................................................63

5.15

Multiplier ...............................................................................................................................64

6. IO Registers ........................................................................................................................ 65

6.1.

ACC Status Flag Register (flag), IO address = 0x00 .............................................................65

6.2.

Stack Pointer Register (sp), IO address = 0x02 ....................................................................65

6.3.

Clock Mode Register (clkmd), IO address = 0x03 .................................................................65

6.4.

Interrupt Enable Register (inten), IO address = 0x04 ............................................................66

6.5.

Interrupt Request Register (intrq), IO address = 0x05 ...........................................................66

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