HT66F016(2012) View Datasheet(PDF) - Holtek Semiconductor

Part Name

Description

Manufacturer

HT66F016
(Rev.:2012)

Enhanced Flash Type 8-Bit MCU with EEPROM

Holtek Semiconductor 

Contents

Special Function Register Description ...........................................23

Indirect Addressing Registers - IAR0, IAR1..........................................................23

Memory Pointers - MP0, MP1 ..............................................................................23

Bank Pointer - BP ................................................................................................24

Accumulator - ACC ..............................................................................................24

Program Counter Low Register - PCL..................................................................24

Look-up Table Registers - TBLP, TBHP, TBLH.....................................................24

Status Register - STATUS ...................................................................................25

EEPROM Data Memory .....................................................................26

EEPROM Data Memory Structure ........................................................................26

EEPROM Registers..............................................................................................26

Reading Data from the EEPROM .........................................................................28

Writing Data to the EEPROM ...............................................................................28

Write Protection ....................................................................................................28

EEPROM Interrupt ...............................................................................................28

Programming Considerations ...............................................................................28

Oscillator............................................................................................30

Oscillator Overview...............................................................................................30

System Clock Configurations................................................................................30

External Crystal/Ceramic Oscillator - HXT ...........................................................31

Internal RC Oscillator - HIRC ...............................................................................31

Internal 32kHz Oscillator - LIRC...........................................................................31

Supplementary Oscillators....................................................................................31

Operating Modes and System Clocks .............................................32

System Clocks......................................................................................................32

System Operation Modes .....................................................................................33

Control Register ...................................................................................................34

Fast Wake-up .......................................................................................................35

Operating Mode Switching and Wake-up..............................................................35

NORMAL Mode to SLOW Mode Switching...........................................................36

SLOW Mode to NORMAL Mode Switching...........................................................37

Entering the SLEEP0 Mode..................................................................................37

Entering the SLEEP1 Mode..................................................................................38

Entering the IDLE0 Mode .....................................................................................38

Entering the IDLE1 Mode .....................................................................................38

Standby Current Considerations...........................................................................38

Wake-up ...............................................................................................................39

Programming Considerations ...............................................................................39

Watchdog Timer ................................................................................40

Watchdog Timer Clock Source .............................................................................40

Watchdog Timer Control Register.........................................................................40

Watchdog Timer Operation...................................................................................40

Watchdog Timer Enable/Disable Control ..............................................................40

Rev. 1.00

3

May 14, 2012

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