HT46R016 Просмотр технического описания (PDF) - Holtek Semiconductor

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HT46R016

Enhanced A/D Type 8-Bit OTP MCU

Holtek Semiconductor 

HT46R016/HT46R017

Enhanced A/D 8-Bit OTP MCU

Oscillator......................................................................................................... 25

System Oscillator Overview................................................................................................... 25

System Clock Configurations................................................................................................. 25

External Crystal/Resonator Oscillator – HXT......................................................................... 25

Internal RC Oscillator – HIRC................................................................................................ 26

Internal Low Speed Oscillator – LIRC.................................................................................... 26

Power Down Mode and Wake-up................................................................... 27

Entering the Power Down Mode............................................................................................ 27

Standby Current Considerations............................................................................................ 27

Wake-up................................................................................................................................. 28

Watchdog Timer.............................................................................................. 29

Watchdog Timer Clock Source............................................................................................... 29

Watchdog Timer Control Register.......................................................................................... 29

Watchdog Timer Operation.................................................................................................... 30

Reset and Initialisation................................................................................... 32

Reset Functions..................................................................................................................... 32

Reset Initial Conditions.......................................................................................................... 35

Input/Output Ports.......................................................................................... 37

Pull-high Resistors................................................................................................................. 37

Port A Wake-up...................................................................................................................... 37

I/O Port Control Registers...................................................................................................... 38

Pin-shared Functions............................................................................................................. 38

I/O Pin Structures................................................................................................................... 39

Programming Considerations................................................................................................. 40

Timer/Event Counter...................................................................................... 41

Configuring the Timer/Event Counter Input Clock Source..................................................... 41

Timer Registers – TMR0, TMR1............................................................................................ 42

Timer Control Registers – TMR0C, TMR1C........................................................................... 42

Timer Mode............................................................................................................................ 44

Event Counter Mode.............................................................................................................. 44

Pulse Width Capture Mode.................................................................................................... 45

Prescaler................................................................................................................................ 46

PFD Function......................................................................................................................... 46

I/O Interfacing......................................................................................................................... 48

Programming Considerations................................................................................................. 48

Timer Program Example........................................................................................................ 49

Time Base........................................................................................................ 50

Pulse Width Modulator................................................................................... 50

PWM Operation...................................................................................................................... 50

6+2 PWM Mode..................................................................................................................... 51

7+1 PWM Mode..................................................................................................................... 52

PWM Output Control.............................................................................................................. 52

PWM Programming Example................................................................................................. 53

Rev. 1.00

3

July 16, 2012

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