PFS154 datasheet(4/91 Pages) PADAUK

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PFS154

8bit MTP Type IO Controller

Page 4 of 91

PDK-DS-PFS154_CN_V105 –Jun. 9, 2020

5.9.

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

5.10. Reset and LVR........................................................................................................................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 (Vinternal R).............................................................................43

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 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 ....................................................................................54

5.14.3 Equations for 11-bit PWM Generator ...........................................................................55

5.14.4 Examples of PWM Waveforms with Complementary Dead Zones ...............................55

IO Registers.........................................................................................................................58

6.1.

ACC Status Flag Register (flag), IO address = 0x00 ...............................................................58

6.2.

Stack Pointer Register (sp), IO address = 0x02.......................................................................58

6.3.

Clock Mode Register (clkmd), IO address = 0x03 ...................................................................58

6.4.

Interrupt Enable Register (inten), IO address = 0x04 ..............................................................59

6.5.

Interrupt Request Register (intrq), IO address = 0x05 .............................................................59

6.6.

Timer 16 mode Register (t16m), IO address = 0x06................................................................60

6.7.

External Oscillator setting Register (eoscr, write only), IO address = 0x0a..............................60

6.8.

Interrupt Edge Select Register (integs), IO address = 0x0c.....................................................61

6.9.

Port A Digital Input Enable Register (padier), IO address = 0x0d.............................................61

6.10. Port B Digital Input Enable Register (pbdier), IO address = 0x0e ............................................61

6.11. Port A Data Registers (pa), IO address = 0x10........................................................................61

6.12. Port A Control Registers (pac), IO address = 0x11 ..................................................................62

6.13. Port A Pull-High Registers (paph), IO address = 0x12 .............................................................62

6.14. Port B Data Registers (pb), IO address = 0x14 .......................................................................62

6.15. Port B Control Registers (pbc), IO address = 0x15..................................................................62

6.16. Port B Pull-High Registers (pbph), IO address = 0x16 ............................................................62

6.17. MISC Register (misc), IO address = 0x08 ...............................................................................63

6.18. Timer2 Control Register (tm2c), IO address = 0x1c.................................................................63

6.19. Timer2 Counter Register (tm2ct), IO address = 0x1d ..............................................................64

6.20. Timer2 Scalar Register (tm2s), IO address = 0x17..................................................................64

6.21. Timer2 Bound Register (tm2b), IO address = 0x09 .................................................................64

6.22. Timer3 Control Register (tm3c), IO address = 0x32 ................................................................65

6.23. Timer3 Counter Register (tm3ct), IO address = 0x33 ..............................................................65

6.24. Timer3 Scalar Register (tm3s), IO address = 0x34..................................................................65

6.25. Timer3 Bound Register (tm3b), IO address = 0x35 .................................................................66

6.26. Comparator Control Register (gpcc), IO address = 0x18.........................................................66

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