HT45F77 datasheet(4/203 Pages) HOLTEK

4 / 203 page

Rev. 1.20

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De�e��e� 1�� 201�

Rev. 1.20

De�e��e� 1�� 201�

HT45F77

Body Fat Scale Flash MCU

HT45F77

Body Fat Scale Flash MCU

Timer Modules – TM ...................................................................................... 74

Int�odu�tion ........................................................................................................................... 7�

TM Ope�ation ........................................................................................................................ 7�

TM Clo�k Sou��e................................................................................................................... 7�

TM Inte��upts......................................................................................................................... 75

TM Exte�nal Pins .................................................................................................................. 75

TM Input/Output Pin Cont�ol Registe�s ................................................................................. 75

P�og�a��ing Conside�ations................................................................................................ 7�

Compact Type TM – CTM .............................................................................. 77

Co�pa�t TM Ope�ation ........................................................................................................ 77

Co�pa�t Type TM Registe� Des��iption................................................................................ 78

Co�pa�t Type TM Ope�ating Modes ................................................................................... 82

Periodic Type TM – PTM................................................................................ 88

Pe�iodi� TM Ope�ation .......................................................................................................... 88

Pe�iodi� Type TM Registe� Des��iption................................................................................. 89

Pe�iodi� Type TM Ope�ating Modes...................................................................................... 93

Internal Power Supply ................................................................................ 102

Analog to Digital Converter – ADC............................................................. 104

A/D Data Rate Definition..................................................................................................... 10�

A/D Ove�view ...................................................................................................................... 10�

A/D Conve�te� Registe� Des��iption.................................................................................... 105

Programmable Gain Amplifier – PGA.................................................................................. 105

A/D Conve�te� Data Registe�s – ADRL� ADRM� ADRH....................................................... 107

A/D Conve�te� Cont�ol Registe�s – ADCR0� ADCR1� ADCS............................................... 108

A/D Ope�ation ......................................................................................................................110

Su��a�y of A/D Conve�sion Steps......................................................................................111

P�og�a��ing Conside�ations...............................................................................................112

A/D T�ansfe� Fun�tion ..........................................................................................................112

A/D Conve�ted Data.............................................................................................................113

A/D Conve�ted Data to Voltage............................................................................................113

A/D P�og�a��ing Exa�ple..................................................................................................11�

Temperature Sensor .....................................................................................115

Serial Interface Module – SIM......................................................................115

SPI Inte�fa�e .......................................................................................................................115

SPI Inte�fa�e Ope�ation .......................................................................................................115

SPI Registe�s .......................................................................................................................11�

SPI Co��uni�ation ............................................................................................................119

I2C Inte�fa�e ........................................................................................................................ 121

I2C Inte�fa�e Ope�ation ....................................................................................................... 122

I2C Registe�s ....................................................................................................................... 123

I2C Bus Co��uni�ation ...................................................................................................... 12�

I2C Bus Sta�t Signal............................................................................................................. 127

I2C Slave Add�ess ............................................................................................................... 127

I2C Bus Read/W�ite Signal .................................................................................................. 128

HT45F77 Datasheet(PDF) 4 Page - Holtek Semiconductor Inc

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