HT66F317 datasheet(3/198 Pages) HOLTEK

3 / 198 page

Rev. 1.20

De�e��e� 1�� 201�

Rev. 1.20

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De�e��e� 1�� 201�

HT66F317/HT66F318

Enhanced A/D MCU with LCD Driver

HT66F317/HT66F318

Enhanced A/D MCU with LCD Driver

EEPROM Data memory ..................................................................................... 36

EEPROM Data Me�o�y St�u�tu�e .............................................................................................��

EEPROM Registe�s ...................................................................................................................��

Reading Data f�o� the EEPROM ..............................................................................................�8

W�iting Data to the EEPROM.....................................................................................................�8

W�ite P�ote�tion..........................................................................................................................�8

EEPROM Inte��upt .....................................................................................................................�8

P�og�a��ing Conside�ations.....................................................................................................�9

Oscillator ............................................................................................................ 40

Os�illato� Ove�view ...................................................................................................................40

System Clock Configurations ....................................................................................................40

Exte�nal C�ystal/Ce�a�i� Os�illato� – HXT ...............................................................................41

Inte�nal RC Os�illato� – HIRC ...................................................................................................42

Exte�nal �2.7�8kHz C�ystal Os�illato� – LXT.............................................................................42

Inte�nal �2kHz Os�illato� – LIRC ...............................................................................................4�

Supple�enta�y Os�illato�s ........................................................................................................4�

Operating Modes and System Clocks ............................................................ 44

Syste� Clo�ks ..........................................................................................................................44

Syste� Ope�ation Modes ..........................................................................................................45

Cont�ol Registe� .........................................................................................................................4�

Fast Wake-up ............................................................................................................................47

Ope�ating Mode Swit�hing ........................................................................................................48

Stand�y Cu��ent Conside�ations ...............................................................................................5�

Wake-up ....................................................................................................................................5�

P�og�a��ing Conside�ations ....................................................................................................54

Watchdog Timer................................................................................................. 55

Wat�hdog Ti�e� Clo�k Sou��e...................................................................................................55

Wat�hdog Ti�e� Cont�ol Registe� ..............................................................................................55

Wat�hdog Ti�e� Ope�ation ........................................................................................................5�

Reset and Initialisation...................................................................................... 57

Reset Fun�tions ........................................................................................................................57

Reset Initial Conditions .............................................................................................................�0

Input/Output Ports ............................................................................................ 64

Pull-high Resisto�s .....................................................................................................................�4

Po�t A Wake-up ..........................................................................................................................��

I/O Po�t Cont�ol Registe�s..........................................................................................................��

I/O Pin St�u�tu�es.......................................................................................................................�7

Sou��e Cu��ent Sele�tion...........................................................................................................�8

P�og�a��ing Conside�ations ....................................................................................................70

HT66F317 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

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