HT48R064G(2011) Ver la hoja de datos (PDF) - Holtek Semiconductor

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HT48R064G
(Rev.:2011)

Enhanced I/O Type MCU with OPA

Holtek Semiconductor 

Contents

Pull-high Registers - PAPU, PBPU, PCPU, PDPU, PEPU, PFPU ........................35

Software COM Register - SCOMC.......................................................................35

Oscillator............................................................................................35

System Oscillator Overview..................................................................................35

System Clock Configurations................................................................................35

External Crystal/Resonator Oscillator - HXT ........................................................36

External RC Oscillator - ERC ...............................................................................36

Internal RC Oscillator - HIRC ...............................................................................37

External 32768Hz Crystal Oscillator - LXT ...........................................................37

LXT Oscillator Low Power Function ......................................................................38

Internal Low Speed Oscillator - LIRC ...................................................................38

Operating Modes ...............................................................................39

Mode Types and Selection ...................................................................................39

Mode Switching ....................................................................................................40

Standby Current Considerations...........................................................................41

Wake-up ...............................................................................................................41

Watchdog Timer ................................................................................42

Watchdog Timer Operation...................................................................................42

Reset and Initialisation .....................................................................44

Reset Functions ...................................................................................................44

Reset Initial Conditions .........................................................................................46

Input/Output Ports.............................................................................49

Pull-high Resistors................................................................................................49

I/O Port Wake-up..................................................................................................49

I/O Port Control Registers.....................................................................................51

Pin-shared Functions............................................................................................52

Pin Remapping Configuration - HT48R0662G .....................................................52

I/O Pin Structures .................................................................................................53

Programming Considerations ...............................................................................53

Timer/Event Counters .......................................................................55

Configuring the Timer/Event Counter Input Clock Source .....................................55

Timer Registers - TMR0, TMR1 ...........................................................................55

Timer Control Registers - TMR0C, TMR1C..........................................................57

Timer Mode ..........................................................................................................58

Event Counter Mode.............................................................................................59

Pulse Width Capture Mode...................................................................................59

Prescaler ..............................................................................................................60

PFD Function .......................................................................................................60

I/O Interfacing.......................................................................................................61

Timer Program Example.......................................................................................62

Time Base ..........................................................................................62

Rev. 1.00

3

February 23, 2011

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