Holtek HT67F2350 Manual page 3

HT67F2350/HT67F2360
HT67F2370/HT67F2390
Advanced A/D Flash MCU with LCD & EEPROM
In Application Programming - IAP ........................................................................................ 58
Data Memory .................................................................................................. 67
Structure ................................................................................................................................ 67
Data Memory Addressing ...................................................................................................... 68
General Purpose Data Memory ............................................................................................ 68
Special Purpose Data Memory ............................................................................................. 68
Special Function Register Description ........................................................ 72
Indirect Addressing Registers - IAR0, IAR1, IAR2 ............................................................... 72
Memory Pointers - MP0, MP1H/MP1L, MP2H/MP2L ........................................................... 72
Program Memory Bank Pointer - PBP .................................................................................. 74
Accumulator - ACC ............................................................................................................... 75
Program Counter Low Register - PCL .................................................................................. 75
Look-up Table Registers - TBLP, TBHP, TBLH ..................................................................... 75
Status Register - STATUS .................................................................................................... 75
EEPROM Data Memory .................................................................................. 77
EEPROM Data Memory Structure ........................................................................................ 77
EEPROM Registers .............................................................................................................. 77
Reading Data from the EEPROM ......................................................................................... 79
Writing Data to the EEPROM ................................................................................................ 80
Write Protection ..................................................................................................................... 80
EEPROM Interrupt ................................................................................................................ 80
Programming Considerations ................................................................................................ 81
Oscillators ...................................................................................................... 82
Oscillator Overview ............................................................................................................... 82
System Clock Configurations ................................................................................................ 82
External Crystal/Ceramic Oscillator - HXT ........................................................................... 83
Internal High Speed RC Oscillator - HIRC ........................................................................... 84
External 32.768 kHz Crystal Oscillator - LXT ....................................................................... 84
Internal 32kHz Oscillator - LIRC ........................................................................................... 85
Operating Modes and System Clocks ......................................................... 85
System Clocks ...................................................................................................................... 85
System Operation Modes ...................................................................................................... 87
Control Registers .................................................................................................................. 88
Operating Mode Switching .................................................................................................... 91
Standby Current Considerations ........................................................................................... 95
Wake-up ................................................................................................................................ 95
Watchdog Timer ............................................................................................. 96
Watchdog Timer Clock Source .............................................................................................. 96
Watchdog Timer Control Register ......................................................................................... 96
Watchdog Timer Operation ................................................................................................... 97
Reset and Initialisation .................................................................................. 98
Reset Functions .................................................................................................................... 98
Reset Initial Conditions ....................................................................................................... 102
Rev. 1.60 3 May 16, 2019