Holtek HT66F0175 - 4-Pin SSOP (150 Mil) O�Tline Dimensions

Rev. 1.50 4 August 28, 2017 Rev. 1.50 5 August 28, 2017
HT66F0175/HT66F0185
A/D Flash MCU with EEPROM
HT66F0175/HT66F0185
A/D Flash MCU with EEPROM
Timer Modules – TM .......................................................................................... 71
Introduction ................................................................................................................................71
TM Operation .............................................................................................................................71
TM Clock Source ........................................................................................................................72
TM Interrupts .............................................................................................................................. 72
TM External Pins ........................................................................................................................ 72
TM Input/Output Pin Control Register ........................................................................................73
Programming Considerations .....................................................................................................75
Compact Type TM – CTM .................................................................................. 76
Compact TM Operation .............................................................................................................. 76
Compact Type TM Register Description.....................................................................................77
Compact Type TM Operation Modes .........................................................................................81
Standard Type TM – STM .................................................................................. 87
Standard TM Operation ..............................................................................................................87
Standard Type TM Register Description ....................................................................................88
Standard Type TM Operation Modes .........................................................................................92
Periodic Type TM – PTM .................................................................................. 102
Periodic TM Operation .............................................................................................................102
Periodic Type TM Register Description ....................................................................................103
Periodic Type TM Operation Modes ......................................................................................... 108
Analog to Digital Converter ............................................................................ 117
A/D Overview ........................................................................................................................... 117
A/D Converter Register Description ......................................................................................... 118
A/D Input Pins ..........................................................................................................................124
A/D Reference Voltage .............................................................................................................124
A/D Operation ..........................................................................................................................124
Conversion Rate and Timing Diagram .....................................................................................125
Summary of A/D Conversion Steps ..........................................................................................126
Programming Considerations ...................................................................................................127
A/D Transfer Function ..............................................................................................................127
A/D Programming Examples .................................................................................................... 128
Serial Interface Module – SIM ......................................................................... 130
SPI Interface ............................................................................................................................130
SPI Registers ...........................................................................................................................131
SPI Communication .................................................................................................................134
I
2
C Interface .............................................................................................................................136
I
2
C Registers ............................................................................................................................137
I
2
C Bus Communication ...........................................................................................................141
I
2
C Time-out Control ................................................................................................................. 144