HT56RB688_13 datasheet(3/164 Pages) HOLTEK

3 / 164 page

Program Counter Low Register

- PCL..................................................................31

Look-up Table Registers

- TBLP, TBHP, TBLH.....................................................32

Status Register

- STATUS ...................................................................................32

Interrupt Control Registers....................................................................................33

Timer/Event Counter Registers.............................................................................33

Input/Output Ports and Control Registers .............................................................33

Pulse Width Modulator Registers..........................................................................33

A/D Converter Registers

- ADRL, ADRH, ADCR, ACSR......................................33

Serial Interface Module Registers.........................................................................34

Port A Wake-up Register

- PAWU ........................................................................34

Pull-High Registers

- PAPU, PBPU, PCPU, PDPU, PEPU, PFPU .......................34

Clock Control Register

- CLKMOD.......................................................................34

LCD/LED Registers

- LCDCTRL, LEDCTRL, LCDIO ...........................................34

Miscellaneous Register

- MISC0, MISC1 .............................................................34

Input/Output Ports.............................................................................34

Pull-high Resistors................................................................................................35

Port A Wake-up ....................................................................................................35

Port A Open Drain Function..................................................................................36

I/O Port Control Registers.....................................................................................36

Pin-shared Functions............................................................................................37

I/O Pin Structures .................................................................................................37

Programming Considerations ...............................................................................39

LCD and LED Driver ..........................................................................39

Display Memory....................................................................................................40

LCD/LED Registers ..............................................................................................41

LCD Reset Function .............................................................................................41

Clock Source ........................................................................................................42

LCD Driver Output ................................................................................................42

LED Driver Output ................................................................................................43

LCD Voltage Source and Biasing..........................................................................44

Programming Considerations ...............................................................................46

Timer/Event Counters .......................................................................50

Configuring the Timer/Event Counter Input Clock Source .....................................51

Timer Registers

- TMR0, TMR1L/TMR1H, TMR2, TMR3.....................................51

Timer Control Registers

- TMR0C, TMR1C, TMR2C, TMR3C .............................52

Configuring the Timer Mode .................................................................................53

Configuring the Event Counter Mode....................................................................54

Configuring the Pulse Width Measurement Mode.................................................54

Programmable Frequency Divider

- PFD .............................................................55

Prescaler ..............................................................................................................56

I/O Interfacing.......................................................................................................56

Timer/Event Counter Pins Internal Filter ...............................................................56

Contents

Rev. 1.10

April 15, 2013

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