Contents
Timer/Event Counters.......................................................................41
Configuring the Timer/Event Counter Input Clock Source.....................................43
Timer Registers - TMR0, TMR1 ...........................................................................43
Timer Control Registers - TMR0C, TMR1C..........................................................43
Timer Mode ..........................................................................................................43
Event Counter Mode.............................................................................................46
Pulse Width Capture Mode...................................................................................46
Prescaler..............................................................................................................47
PFD Function .......................................................................................................47
I/O Interfacing.......................................................................................................48
Programming Considerations ...............................................................................48
Timer Program Example.......................................................................................48
Time Base ..........................................................................................49
Pulse Width Modulator .....................................................................50
PWM Operation....................................................................................................50
6+2 PWM Mode ...................................................................................................50
7+1 PWM Mode ...................................................................................................51
PWM Output Control ............................................................................................51
Analog to Digital Converter..............................................................53
A/D Overview .......................................................................................................53
A/D Converter Data Registers - ADRL, ADRH.....................................................53
A/D Converter Control Registers - ADCR, ACSR.................................................53
A/D Input Pins ......................................................................................................56
Summary of A/D Conversion Steps ......................................................................56
Programming Considerations ...............................................................................57
A/D Transfer Function...........................................................................................57
A/D Programming Example ..................................................................................57
Interrupts............................................................................................59
Interrupt Register..................................................................................................59
Interrupt Operation ...............................................................................................59
Interrupt Priority.....................................................................................................60
External Interrupt..................................................................................................60
Timer/Event Counter Interrupt ..............................................................................63
Time Base Interrupt ..............................................................................................63
Programming Considerations ...............................................................................63
SCOM Function for LCD ...................................................................63
LCD Operation .....................................................................................................63
LCD Bias Control..................................................................................................64
Configuration Options ......................................................................65
Application Circuits ..........................................................................65
Rev. 1.10
4
October 23, 2012
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
