HT66F03 datasheet(3/147 Pages) HOLTEK

3 / 147 page

Special Function Register Description ...........................................26

Indirect Addressing Registers

- IAR0, IAR1..........................................................26

Memory Pointers

- MP0, MP1..............................................................................26

Bank Pointer

- BP ................................................................................................27

Accumulator

- ACC..............................................................................................27

Program Counter Low Register

- PCL..................................................................27

Look-up Table Registers

- TBLP, TBHP, TBLH.....................................................27

Status Register

- STATUS ...................................................................................28

EEPROM Data Memory .....................................................................29

EEPROM Data Memory Structure ........................................................................29

EEPROM Registers..............................................................................................29

Reading Data from the EEPROM .........................................................................31

Writing Data to the EEPROM ...............................................................................31

Write Protection ....................................................................................................31

EEPROM Interrupt ...............................................................................................31

Programming Considerations ...............................................................................31

Oscillator............................................................................................33

Oscillator Overview...............................................................................................33

System Clock Configurations................................................................................33

External Crystal/ Ceramic Oscillator

- HXT...........................................................34

External RC Oscillator

- ERC...............................................................................34

Internal RC Oscillator

- HIRC ...............................................................................34

External 32.768kHz Crystal Oscillator

- LXT ........................................................35

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

Internal 32kHz Oscillator

- LIRC...........................................................................35

Operating Modes and System Clocks .............................................36

System Clocks......................................................................................................36

System Operation Modes .....................................................................................37

Control Register ...................................................................................................38

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

Operating Mode Switching and Wake-up..............................................................40

NORMAL Mode to SLOW Mode Switching...........................................................40

SLOW Mode to NORMAL Mode Switching...........................................................41

Entering the SLEEP0 Mode..................................................................................41

Entering the SLEEP1 Mode..................................................................................42

Entering the IDLE0 Mode .....................................................................................42

Entering the IDLE1 Mode .....................................................................................42

Standby Current Considerations...........................................................................42

Wake-up...............................................................................................................43

Programming Considerations ...............................................................................43

Contents

Rev. 1.30

February 17, 2011

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