HT66F24D 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT66F24D

A/D Flash Type 8-bit MCU with EEPROM

Holtek Semiconductor 

A/D Flash Type 8-bit MCU with EEPROM

HT66F24D/HT66F25D

EEPROM Data Memory................................................................................... 32

EEPROM Data Memory Structure......................................................................................... 32

EEPROM Registers............................................................................................................... 32

Reading Data from the EEPROM.......................................................................................... 34

Writing Data to the EEPROM................................................................................................. 34

Write Protection...................................................................................................................... 34

EEPROM Interrupt................................................................................................................. 34

Programming Considerations................................................................................................. 35

Oscillator......................................................................................................... 36

Oscillator Overview................................................................................................................ 36

System Clock Configurations................................................................................................. 36

External Crystal/Ceramic Oscillator – HXT............................................................................ 37

Internal High Speed RC Oscillator – HIRC............................................................................ 38

Internal 32kHz Oscillator – LIRC............................................................................................ 38

External 32.768kHz Crystal Oscillator – LXT......................................................................... 38

Supplementary Oscillator....................................................................................................... 39

Operating Modes and System Clocks.......................................................... 40

System Clocks....................................................................................................................... 40

System Operation Modes....................................................................................................... 41

Control Register..................................................................................................................... 42

Fast Wake-up......................................................................................................................... 44

Operating Mode Switching..................................................................................................... 45

Standby Current Considerations............................................................................................ 49

Wake-up................................................................................................................................. 49

Programming Considerations................................................................................................. 49

Watchdog Timer.............................................................................................. 50

Watchdog Timer Clock Source............................................................................................... 50

Watchdog Timer Control Register.......................................................................................... 50

Watchdog Timer Operation.................................................................................................... 51

Reset and Initialisation................................................................................... 52

Reset Functions..................................................................................................................... 53

Reset Initial Conditions.......................................................................................................... 55

Input/Output Ports.......................................................................................... 60

I/O Resistor Lists.................................................................................................................... 60

Pull-high Resistors................................................................................................................. 61

Port A Wake-up...................................................................................................................... 62

Pin-remapping Functions....................................................................................................... 64

Rev. 1.10

3

March 25, 2013

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