Rev. 1.21 4 November 09, 2017 Rev. 1.21 5 November 09, 2017
HT66F488/HT66F489
A/D Flash MCU with EEPROM
HT66F488/HT66F489
A/D Flash MCU with EEPROM
Timer Modules – TM ...................................................................................... 59
Introduction ........................................................................................................................... 59
TM Operation ........................................................................................................................ 60
TM Clock Source................................................................................................................... 60
TM Interrupts......................................................................................................................... 60
TM External Pins................................................................................................................... 60
TM Input/Output Pin Control Register ................................................................................... 61
Programming Considerations................................................................................................ 63
Compact Type TM – CTM .............................................................................. 64
Compact TM Operation......................................................................................................... 64
Compact Type TM Register Description................................................................................ 65
Compact Type TM Operating Modes .................................................................................... 69
Standard Type TM – STM .............................................................................. 75
Standard TM Operation......................................................................................................... 75
Standard Type TM Register Description ............................................................................... 76
Standard Type TM Operating Modes .................................................................................... 80
Periodic Type TM – PTM0, PTM1 .................................................................. 90
Periodic TM Operation .......................................................................................................... 90
PTM register description ....................................................................................................... 91
Periodic Type TM Operating Modes...................................................................................... 95
Analog to Digital Converter ........................................................................ 104
A/D Overview ...................................................................................................................... 104
A/D Converter Register Description .................................................................................... 104
A/D Converter Data Registers – ADRL, ADRH ................................................................... 105
A/D Converter Control Registers – ADCR0, ADCR1, ACERL............................................. 105
A/D Operation ..................................................................................................................... 108
A/D Input Pins ......................................................................................................................110
Summary of A/D Conversion Steps......................................................................................110
Programming Considerations...............................................................................................112
A/D Transfer Function ..........................................................................................................112
A/D Programming Examples................................................................................................113
Serial Interface Module – SIM ......................................................................115
SPI Interface ........................................................................................................................115
SPI Register .........................................................................................................................116
SPI Communication .............................................................................................................119
I2C Interface ........................................................................................................................ 121
I2C Register ......................................................................................................................... 122
I2C Bus Communication ...................................................................................................... 126
I2C Bus Start Signal............................................................................................................. 127
Slave Address ..................................................................................................................... 127
I2C Bus Read/Write Signal .................................................................................................. 127
I2C Bus Slave Address Acknowledge Signal ....................................................................... 127
I2C Bus Data and Acknowledge Signal ............................................................................... 128
I2C Time-out Control............................................................................................................ 129
