HT83F22 Datasheet, PDF (3/158 Pages) Holtek Semiconductor Inc – A/D Type Recorder 8-Bit Flash MCU

HT83F22
A/D Type Recorder 8-Bit Flash MCU
External Crystal/ Ceramic Oscillator – HXT............................................................................24
External RC Oscillator – ERC.................................................................................................25
Internal RC Oscillator – HIRC.................................................................................................25
External 32.768kHz Crystal Oscillator – LXT..........................................................................26
LXT Oscillator Low Power Function........................................................................................27
Internal 32kHz Oscillator – LIRC.............................................................................................27
Supplementary Oscillators......................................................................................................27
Operating Modes and System Clocks........................................................... 28
System Clocks........................................................................................................................28
System Operation Modes........................................................................................................29
Control Register......................................................................................................................30
Fast Wake – up.......................................................................................................................31
Operating Mode Switching and Wake-up................................................................................32
NORMAL Mode to SLOW Mode Switching.............................................................................32
SLOW Mode to NORMAL Mode Switching.............................................................................34
Entering the SLEEP0 Mode....................................................................................................34
Entering the SLEEP1 Mode....................................................................................................34
Entering the IDLE0 Mode........................................................................................................34
Entering the IDLE1 Mode........................................................................................................35
Standby Current Considerations.............................................................................................35
Wake-up..................................................................................................................................35
Programming Considerations..................................................................................................36
Watchdog Timer............................................................................................... 37
Watchdog Timer Clock Source................................................................................................37
Watchdog Timer Control Register...........................................................................................37
Watchdog Timer Operation.....................................................................................................38
Reset and Initialisation............................................................................................................39
Reset Functions......................................................................................................................39
Reset Initial Conditions...........................................................................................................42
Input/Output Ports........................................................................................... 44
Pull-high Resistors..................................................................................................................45
Port A Wake-up.......................................................................................................................45
I/O Port Control Registers.......................................................................................................45
I/O Pin Structures....................................................................................................................46
Programming Considerations..................................................................................................46
Timer Modules – TM........................................................................................ 48
Introduction.............................................................................................................................48
TM Operation..........................................................................................................................48
TM Clock Source.....................................................................................................................49
TM Interrupts...........................................................................................................................49
TM External Pins.....................................................................................................................49
TM Input/Output Pin Control Registers...................................................................................50
Programming Considerations..................................................................................................52
Rev. 1.00
3
April 01, 2011