PMC131 datasheet(4/86 Pages) PADAUK

4 / 86 page

PMC131/PMS131/PMS130 Family

12-bit ADC Enhanced 8-bit Controller

Page 4 of 86

PDK-DS-PMX13X-EN_V107 – Dec. 26, 2019

5.4.4.

External Crystal Oscillator .........................................................................................31

5.4.5.

System Clock and LVR level .....................................................................................33

5.4.6.

System Clock Switching ............................................................................................34

5.5.

16-bit Timer (Timer16) ..........................................................................................................35

5.6.

8-bit Timer (Timer2/Timer3) with PWM generation ................................................................37

5.6.1.

Using the Timer2 to generate periodical waveform ....................................................38

5.6.2.

Using the Timer2 to generate 8-bit PWM waveform...................................................40

5.6.3.

Using the Timer2 to generate 6-bit PWM waveform...................................................41

5.7.

WatchDog Timer ...................................................................................................................42

5.8.

Interrupt ................................................................................................................................43

5.9.

Power-Save and Power-Down ..............................................................................................46

5.9.1.

Power-Save mode (“stopexe”) ...................................................................................46

5.9.2.

Power-Down mode (“stopsys”) ..................................................................................47

5.9.3.

Wake-up....................................................................................................................48

5.10.

IO Pins ..................................................................................................................................49

5.11.

Reset and LVR......................................................................................................................50

5.11.1. Reset.........................................................................................................................50

5.11.2. LVR reset ..................................................................................................................50

5.12.

Analog-to-Digital Conversion (ADC) module .........................................................................50

5.12.1. The input requirement for AD conversion ..................................................................51

5.12.2. Select the ADC bit resolution .....................................................................................52

5.12.3. Select the reference high voltage ..............................................................................52

5.12.4. ADC clock selection...................................................................................................52

5.12.5. AD conversion ...........................................................................................................53

5.12.6. Configure the analog pins..........................................................................................53

5.12.7. Using the ADC...........................................................................................................53

5.13.

Multiplier ...............................................................................................................................54

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

6.1.

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

6.2.

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

6.3.

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

6.4.

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

6.5.

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

6.6.

Multiplier Operand Register (mulop), IO address = 0x08.......................................................56

6.7.

Multiplier Result High Byte Register (mulrh), IO address = 0x09 ...........................................56

6.8.

Timer16 mode Register (t16m), IO address = 0x06...............................................................57

6.9.

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

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