HT67F60A/HT67F70A
TinyPowerTM A/D Flash MCU with LCD & EEPROM
Special Function Register Description........................................................ 43
Indirect Addressing Registers – IAR0, IAR1, IAR2 ............................................................... 43
Memory Pointers – MP0, MP1H/MP1L, MP2H/MP2L........................................................... 43
Bank Pointer – BP................................................................................................................. 45
Accumulator – ACC............................................................................................................... 45
Program Counter Low Register – PCL.................................................................................. 46
Look-up Table Registers – TBLP, TBHP, TBLH..................................................................... 46
Status Register – STATUS.................................................................................................... 46
EEPROM Data Memory.................................................................................. 48
EEPROM Data Memory Structure ........................................................................................ 48
EEPROM Registers .............................................................................................................. 48
Reading Data from the EEPROM ......................................................................................... 50
Writing Data to the EEPROM................................................................................................ 50
Write Protection..................................................................................................................... 50
EEPROM Interrupt ................................................................................................................ 50
Programming Considerations................................................................................................ 51
Oscillator ........................................................................................................ 52
Oscillator Overview ............................................................................................................... 52
System Clock Configurations................................................................................................ 52
External Crystal/Ceramic Oscillator – HXT ........................................................................... 53
Internal High Speed RC Oscillator – HIRC ........................................................................... 54
External 32.768 kHz Crystal Oscillator – LXT....................................................................... 54
Internal 32kHz Oscillator – LIRC........................................................................................... 56
Supplementary Oscillators .................................................................................................... 56
Operating Modes and System Clocks ......................................................... 56
System Clocks ...................................................................................................................... 56
System Operation Modes...................................................................................................... 57
Control Registers .................................................................................................................. 59
Fast Wake-up........................................................................................................................ 61
Operating Mode Switching.................................................................................................... 62
Standby Current Considerations........................................................................................... 66
Wake-up................................................................................................................................ 67
Watchdog Timer............................................................................................. 68
Watchdog Timer Clock Source.............................................................................................. 68
Watchdog Timer Control Register......................................................................................... 68
Watchdog Timer Operation ................................................................................................... 69
Reset and Initialisation.................................................................................. 70
Reset Functions .................................................................................................................... 71
Reset Initial Conditions ......................................................................................................... 75
Rev. 1.30
3
September 1, 2022
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