HT66F13 datasheet(3/173 Pages) HOLTEK

3 / 173 page

Program Counter Low Register

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

Look-up Table Registers

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

Status Register

- STATUS ...................................................................................27

Oscillator............................................................................................29

Oscillator Overview...............................................................................................29

System Clock Configurations................................................................................29

External Crystal/ Ceramic Oscillator

- HXT ..........................................................30

External RC Oscillator

- ERC...............................................................................31

Internal RC Oscillator

- HIRC...............................................................................31

Internal 32kHz Oscillator

- LIRC...........................................................................31

Supplementary Oscillator......................................................................................31

OperatingModesandSystemClocks .............................................32

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

System Operation Modes .....................................................................................32

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

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

OperatingModeSwitching ...............................................................36

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

SLOW Mode to NORMAL Mode Switching...........................................................38

Entering the SLEEP0 Mode..................................................................................39

Entering the SLEEP1 Mode..................................................................................39

Entering the IDLE0 Mode .....................................................................................39

Entering the IDLE1 Mode .....................................................................................40

Standby Current Considerations...........................................................................40

Wake-up...............................................................................................................40

Programming Considerations ...............................................................................41

WatchdogTimer ................................................................................41

Watchdog Timer Clock Source .............................................................................41

Watchdog Timer Control Register.........................................................................42

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

Resetand Initialisation .....................................................................44

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

Reset Initial Conditions .........................................................................................47

Input/OutputPorts.............................................................................53

I/O Register List....................................................................................................53

Pull-high Resistors................................................................................................55

Port A Wake-up ....................................................................................................56

I/O Port Control Registers.....................................................................................57

I/O Pin Structures .................................................................................................58

Programming Considerations ...............................................................................58

Rev.1.10

February9,2011

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