HT46R068B 查看數據表（PDF） - Holtek Semiconductor

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HT46R068B

Enhanced A/D Type 8-bit OTP MCU

Holtek Semiconductor 

HT46R068B/HT46R069B

Enhanced A/D Type 8-bit OTP MCU

Oscillator......................................................................................................... 32

System Oscillator Overview................................................................................................... 32

External Crystal/Resonator Oscillator – HXT......................................................................... 33

External RC Oscillator – ERC................................................................................................ 33

Internal RC Oscillator – HIRC................................................................................................ 34

External 32768Hz Crystal Oscillator – LXT............................................................................ 34

LXT Oscillator Low Power Function....................................................................................... 35

Internal Low Speed Oscillator – LIRC.................................................................................... 35

Operating Modes............................................................................................ 36

Mode Types and Selection..................................................................................................... 36

Mode Switching...................................................................................................................... 37

Standby Current Considerations............................................................................................ 37

Wake-up................................................................................................................................. 38

Watchdog Timer Operation.................................................................................................... 39

Reset and Initialisation................................................................................... 40

Reset Functions..................................................................................................................... 41

Reset Initial Conditions.......................................................................................................... 43

Input/Output Ports.......................................................................................... 46

Pull-high Resistors................................................................................................................. 46

Port A Wake-up...................................................................................................................... 46

I/O Port Control Registers...................................................................................................... 48

Pin-shared Functions............................................................................................................. 49

Pin Remapping Configuration................................................................................................ 50

I/O Pin Structures................................................................................................................... 50

Programming Considerations................................................................................................. 52

Timer/Event Counters.................................................................................... 52

Configuring the Timer/Event Counter Input Clock Source..................................................... 52

Timer Registers – TMR0, TMR1, TMR2L, TMR2H................................................................ 53

Timer Control Registers – TMR0C, TMR1C, TMR2C............................................................ 53

Timer Mode............................................................................................................................ 57

Event Counter Mode.............................................................................................................. 57

Pulse Width Capture Mode.................................................................................................... 58

Prescaler................................................................................................................................ 59

PFD Function......................................................................................................................... 59

I/O Interfacing......................................................................................................................... 60

Programming Considerations................................................................................................. 60

Timer Program Example........................................................................................................ 61

Time Base.............................................................................................................................. 61

Pulse Width Modulator................................................................................... 62

PWM Operation...................................................................................................................... 63

6+2 PWM Mode..................................................................................................................... 63

7+1 PWM Mode..................................................................................................................... 64

PWM Output Control.............................................................................................................. 65

Rev. 1.10

3

May 02, 2012

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