HT45F4M View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
Manufacturer
HT45F4M Datasheet PDF : 138 Pages
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HT45F4M
Lithium Battery Backup Power ASSP MCU
Standard Type TM – STM............................................................................... 58
Standard TM Operation.......................................................................................................... 58
Standard Type TM Register Description................................................................................ 58
Standard Type TM Operating Modes..................................................................................... 63
Periodic Type TM – PTM................................................................................. 72
Periodic TM Operation........................................................................................................... 72
Periodic Type TM Register Description.................................................................................. 72
Periodic Type TM Operation Modes....................................................................................... 77
Analog to Digital Converter........................................................................... 86
A/D Overview......................................................................................................................... 86
A/D Converter Register Description....................................................................................... 86
A/D Converter Data Registers – ADRL, ADRH...................................................................... 87
A/D Converter Control Registers – ADCR0, ADCR1, ACERL................................................ 87
A/D Operation........................................................................................................................ 91
A/D Input Pins........................................................................................................................ 92
Summary of A/D Conversion Steps........................................................................................ 93
Programming Considerations................................................................................................. 94
A/D Transfer Function............................................................................................................ 94
A/D Programming Example.................................................................................................... 95
Complementary PWM Output........................................................................ 97
Over Current and Voltage Protection ........................................................... 98
OCP/OVP Register................................................................................................................ 99
OCP Operational Amplifier Offset Cancellation Function..................................................... 104
OCP Comparator Offset Cancellation Function................................................................... 104
OVP Comparator Offset Cancellation Function................................................................... 105
Interrupts....................................................................................................... 105
Interrupt Registers................................................................................................................ 105
Interrupt Register Contents.................................................................................................. 106
Interrupt Operation................................................................................................................111
External Interrupt...................................................................................................................113
OVP Interrupt........................................................................................................................113
OCP Interrupt........................................................................................................................113
Multi-function Interrupt..........................................................................................................114
A/D Converter Interrupt.........................................................................................................114
Time Base Interrupts.............................................................................................................114
EEPROM Interrupt................................................................................................................116
LVD Interrupt.........................................................................................................................116
TM Interrupts.........................................................................................................................116
Interrupt Wake-up Function...................................................................................................117
Programming Considerations................................................................................................117
Rev. 1.10
4
January 15, 2013
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