HT45F3230
Proximity Sensing/Motor Driving Flash MCU
Timer Modules – TM ..........................................................................................56
Introduction ................................................................................................................................56
TM Operation .............................................................................................................................56
TM Clock Source........................................................................................................................56
TM Interrupts..............................................................................................................................57
TM External Pins........................................................................................................................57
TM Input/Output Pin Selection ...................................................................................................57
Programming Considerations.....................................................................................................58
Compact Type TM – CTM ..................................................................................59
Compact TM Operation..............................................................................................................59
Compact Type TM Register Description.....................................................................................59
Compact Type TM Operating Modes .........................................................................................63
Periodic Type TM – PTM....................................................................................69
Periodic TM Operation ...............................................................................................................69
Periodic Type TM Register Description .....................................................................................69
Periodic Type TM Operating Modes ..........................................................................................74
Analog to Digital Converter .............................................................................83
A/D Converter Overview ............................................................................................................83
A/D Converter Register Description...........................................................................................83
A/D Converter Operation............................................................................................................86
A/D Converter Reference Voltage..............................................................................................86
A/D Converter Input Signals.......................................................................................................87
Conversion Rate and Timing Diagram .......................................................................................87
Summary of A/D Conversion Steps............................................................................................88
Programming Considerations.....................................................................................................88
A/D Conversion Function ...........................................................................................................89
A/D Conversion Programming Examples...................................................................................89
Proximity Sensing Circuit.................................................................................91
Proximity Sensing Circuit Operation ..........................................................................................91
Proximity Sensing Circuit Register.............................................................................................92
Input Offset calibration ...............................................................................................................97
Sink Current Generator.....................................................................................98
Sink Current Generator Register................................................................................................98
Over Current Protection – OCP........................................................................99
Over Current Protection Operation ............................................................................................99
Over Current Protection Registers.............................................................................................99
Input Voltage Range.................................................................................................................102
Offset Calibration .....................................................................................................................102
Motor Driver .....................................................................................................103
High Voltage Driver Control......................................................................................................104
High Voltage Driver Combination............................................................................................. 111
High Voltage Power Supply Detection .....................................................................................113
Rev. 1.60
4
September 22, 2020
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