HT56R654 Ver la hoja de datos (PDF) - Holtek Semiconductor
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HT56R654 Datasheet PDF : 145 Pages
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HT56R62/HT56R65
HT56R642/HT56R644/HT56R654/HT56R656
TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
Analog to Digital Converter........................................................................... 71
A/D Overview......................................................................................................................... 71
A/D Converter Data Registers − ADRL, ADRH...................................................................... 71
A/D Converter Control Registers − ADCR, ACSR.................................................................. 72
A/D Input Pins........................................................................................................................ 74
Initialising the A/D Converter.................................................................................................. 74
Summary of A/D Conversion Steps........................................................................................ 75
Programming Considerations................................................................................................. 76
A/D Programming Example.................................................................................................... 77
A/D Transfer Function............................................................................................................ 79
Serial Interface Function................................................................................ 80
SPI Interface.......................................................................................................................... 80
SPI Registers......................................................................................................................... 82
SPI Control Register − SIMCTL2........................................................................................... 83
SPI Communication............................................................................................................... 85
I2C Interface........................................................................................................................... 88
I2C Control Register − SIMAR................................................................................................ 90
I2C Bus Communication......................................................................................................... 91
Peripheral Clock Output................................................................................. 95
Peripheral Clock Operation.................................................................................................... 95
Buzzer.............................................................................................................. 96
Interrupts......................................................................................................... 98
Interrupt Registers.................................................................................................................. 98
Interrupt Operation............................................................................................................... 100
Interrupt Priority.................................................................................................................... 102
External Interrupt.................................................................................................................. 102
External Peripheral Interrupt................................................................................................ 103
Timer/Event Counter Interrupt.............................................................................................. 104
A/D Interrupt......................................................................................................................... 104
SPI/I2C Interface Interrupt.................................................................................................... 104
Multi-function Interrupt......................................................................................................... 105
Real Time Clock Interrupt..................................................................................................... 105
Time Base Interrupt.............................................................................................................. 106
Programming Considerations............................................................................................... 107
Reset and Initialisation................................................................................. 107
Reset Functions................................................................................................................... 108
Reset Initial Conditions.........................................................................................................110
Oscillator........................................................................................................113
System Clock Configurations................................................................................................113
System Crystal/Ceramic Oscillator........................................................................................113
External System RC Oscillator..............................................................................................114
Internal 32K_INT Oscillator...................................................................................................115
External 32768Hz Oscillator..................................................................................................115
External Oscillator.................................................................................................................116
Rev. 1.30
4
March 6, 2013
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