HT66F0082 datasheet(3/178 Pages) HOLTEK

3 / 178 page

Rev. 1.30

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Rev. 1.30

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HT66F0042/HT66F0082

A/D Flash MCU with EEPROM

HT66F0042/HT66F0082

A/D Flash MCU with EEPROM

EEPROM Data Memory...................................................................................... 36

EEPROM Data Me�o�y St�u�tu�e .............................................................................................3�

EEPROM Registe�s ...................................................................................................................3�

Reading Data f�o� the EEPROM .............................................................................................38

W�iting Data to the EEPROM.....................................................................................................38

W�ite P�ote�tion..........................................................................................................................38

EEPROM Inte��upt .....................................................................................................................38

P�og�a��ing Conside�ations.....................................................................................................39

Oscillators .......................................................................................................... 40

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

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

Inte�nal RC Os�illato� – HIRC ....................................................................................................41

Inte�nal 3�kHz Os�illato� – LIRC................................................................................................41

Exte�nal 3�.7�8kHz C�ystal Os�illato� – LXT.............................................................................41

Supple�enta�y Os�illato�...........................................................................................................43

Operating Modes and System Clocks ............................................................. 43

Syste� Clo�ks ...........................................................................................................................43

Syste� Ope�ation Modes...........................................................................................................44

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

Ope�ating Mode Swit�hing ........................................................................................................47

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

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

Watchdog Timer................................................................................................. 53

Wat�hdog Ti�e� Clo�k Sou��e...................................................................................................�3

Wat�hdog Ti�e� Cont�ol Registe� ..............................................................................................�3

Wat�hdog Ti�e� Ope�ation ........................................................................................................�4

Reset and Initialisation...................................................................................... 55

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

Reset Initial Conditions ..............................................................................................................�8

Input/Output Ports............................................................................................. 62

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

Po�t A Wake-up ..........................................................................................................................�3

I/O Po�t Cont�ol Registe�s..........................................................................................................�3

Pin-sha�ed Fun�tions .................................................................................................................�3

I/O Po�t Sou��e Cu��ent Cont�ol.................................................................................................�9

I/O Pin St�u�tu�es.......................................................................................................................71

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

HT66F0082 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

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