HT68F14 HOLTEK [Holtek Semiconductor Inc], HT68F14 Datasheet - Page 3

• Manufacturer Part Number: HT68F14
• Description: Enhanced I/O Flash Type MCU
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Contents
Rev. 1.10
Special Function Register Description ...........................................24
Oscillator............................................................................................27
Operating Modes and System Clocks .............................................30
Operating Mode Switching ...............................................................34
Watchdog Timer ................................................................................39
Reset and Initialisation .....................................................................42
Indirect Addressing Registers IAR0, IAR1..........................................................24
Memory Pointers MP0, MP1 ..............................................................................24
Accumulator ACC ..............................................................................................25
Program Counter Low Register
Look-up Table Registers
Status Register
Oscillator Overview...............................................................................................27
System Clock Configurations................................................................................27
External Crystal/ Ceramic Oscillator
External RC Oscillator
Internal RC Oscillator
Internal 32kHz Oscillator
Supplementary Oscillator......................................................................................29
System Clocks......................................................................................................30
System Operation Modes .....................................................................................30
Control Register ...................................................................................................32
Fast Wake-up .......................................................................................................33
NORMAL Mode to SLOW Mode Switching...........................................................35
SLOW Mode to NORMAL Mode Switching...........................................................36
Entering the SLEEP0 Mode................................................................................37
Entering the SLEEP1 Mode..................................................................................37
Entering the IDLE0 Mode .....................................................................................37
Entering the IDLE1 Mode .....................................................................................38
Standby Current Considerations...........................................................................38
Wake-up...............................................................................................................38
Programming Considerations ...............................................................................39
Watchdog Timer Clock Source .............................................................................39
Watchdog Timer Control Register.........................................................................40
Watchdog Timer Operation...................................................................................40
Reset Functions ...................................................................................................42
Reset Initial Conditions .........................................................................................45
STATUS ...................................................................................25
HIRC ...............................................................................29
ERC ...............................................................................29
TBLP, TBHP, TBLH.....................................................25
LIRC...........................................................................29
PCL..................................................................25
3
HXT ..........................................................28
February 9, 2011