HT45F77 datasheet(5/203 Pages) HOLTEK

5 / 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

I2C Bus Slave Add�ess A�knowledge Signal....................................................................... 128

I2C Bus Data and A�knowledge Signal ............................................................................... 128

I2C Ti�e Out Fun�tion......................................................................................................... 130

I2C Ti�e Out Ope�ation....................................................................................................... 130

UART Module Serial Interface with IR Carrier........................................... 131

UART Module Featu�es....................................................................................................... 131

UART Module Ove�view...................................................................................................... 131

UART Exte�nal Pin Inte�fa�ing ............................................................................................ 131

UART Data T�ansfe� S�he�e.............................................................................................. 132

UART Status and Cont�ol Registe�s.................................................................................... 132

Baud Rate Gene�ato�.......................................................................................................... 138

UART Setup and Cont�ol..................................................................................................... 139

Managing Re�eive� E��o�s .................................................................................................. 1�3

UART Module Inte��upt St�u�tu�e........................................................................................ 1��

UART Module Powe� Down and Wake-up .......................................................................... 1��

IR Modulation Inte�fa�e....................................................................................................... 1��

Interrupts...................................................................................................... 147

Inte��upt Registe�s............................................................................................................... 1�7

Inte��upt Ope�ation.............................................................................................................. 152

Exte�nal Inte��upt................................................................................................................. 15�

A/D Conve�te� Inte��upt....................................................................................................... 15�

Multi-fun�tion Inte��upt ........................................................................................................ 15�

Se�ial Inte�fa�e Module Inte��upt......................................................................................... 155

Ti�e Base Inte��upts........................................................................................................... 155

I2C Ti�e Out Inte��upt ......................................................................................................... 15�

UART Inte��upt .................................................................................................................... 157

EEPROM Inte��upt .............................................................................................................. 157

LVD Inte��upt ....................................................................................................................... 157

TM Inte��upts....................................................................................................................... 157

Inte��upt Wake-up Fun�tion................................................................................................. 158

P�og�a��ing Conside�ations.............................................................................................. 158

Low Voltage Detector – LVD ....................................................................... 159

LVD Registe� ....................................................................................................................... 159

LVD Ope�ation..................................................................................................................... 1�0

LCD Driver.................................................................................................... 161

LCD Display Me�o�y .......................................................................................................... 1�3

Clo�k Sou��e ...................................................................................................................... 1�3

LCD Registe�s..................................................................................................................... 1��

LCD D�ive� Output............................................................................................................... 1��

LCD Voltage Sou��e and Biasing........................................................................................ 1�7

LCD Wavefo�� Ti�ing Diag�a�s ....................................................................................... 1�8

P�og�a��ing Conside�ations.............................................................................................. 170

HT45F77 Datasheet(PDF) 5 Page - Holtek Semiconductor Inc

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