PMS15B datasheet(4/68 Pages) PADAUK

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PMS15B/PMS150G Family

8 bit OTP Type IO Controller

Page 4 of 68

PDK-DS-PMS15B/PMS150G-EN-V003–Jul. 24, 2020

5.4.3. IHRC Frequency Calibration and System Clock......................................................23

5.4.4. System Clock and LVR levels .................................................................................24

5.4.5. System Clock Switching .........................................................................................25

5.5.

Comparator .........................................................................................................................26

5.5.1. Internal reference voltage (Vinternal R)........................................................................27

5.5.2. Using the comparator .............................................................................................29

5.5.3. Using the comparator and band-gap 1.20V ............................................................29

5.6.

16-bit Timer (Timer16) ........................................................................................................31

5.7.

8-bit timer (Timer2) with PWM generation ...........................................................................32

5.7.1. Using the Timer2 to generate periodical waveform .................................................33

5.7.2. Using the Timer2 to generate 8-bit PWM waveform................................................34

5.7.3. Using the Timer2 to generate 6-bit PWM waveform................................................36

5.8.

Watchdog Timer..................................................................................................................37

5.9.

Interrupt ..............................................................................................................................38

5.10.

Power-Save and Power-Down ............................................................................................40

5.10.1. Power-Save mode (“stopexe”) ................................................................................41

5.10.2. Power-Down mode (“stopsys”) ...............................................................................42

5.10.3. Wake-up .................................................................................................................42

5.11.

IO Pins ................................................................................................................................43

5.12.

Reset ..................................................................................................................................44

IO Registers....................................................................................................................... 45

6.1.

ACC Status Flag Register (flag), IO address = 0x00 ...........................................................45

6.2.

Stack Pointer Register (sp), IO address = 0x02...................................................................45

6.3.

Clock Mode Register (clkmd), IO address = 0x03 ...............................................................45

6.4.

Interrupt Enable Register (inten), IO address = 0x04...........................................................45

6.5.

Interrupt Request Register (intrq), IO address = 0x05 .........................................................46

6.6.

Timer 16 mode Register (t16m), IO address = 0x06............................................................46

6.7.

External Oscillator setting Register (eoscr, write only), IO address = 0x0a..........................46

6.8.

Interrupt Edge Select Register (integs), IO address = 0x0c .................................................47

6.9.

Port A Digital Input Enable Register (padier), IO address = 0x0d ........................................47

6.10.

Port A Data Registers (pa), IO address = 0x10 ...................................................................47

6.11.

Port A Control Registers (pac), IO address = 0x11..............................................................47

6.12.

Port A Pull-High Registers (paph), IO address = 0x12.........................................................47

6.13.

Port A Pull-Low Registers (papl), IO address = 0x13...........................................................47

6.14.

MISC Register (misc), IO address = 0x1b ...........................................................................48

6.15.

Comparator Control Register (gpcc), IO address = 0x1A.....................................................48

6.16.

Comparator Selection Register (gpcs), IO address = 0x1E .................................................49

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