HT66F319 datasheet(3/185 Pages) HOLTEK

3 / 185 page

Rev. 1.20

De�e��e� 0�� 201�

Rev. 1.20

De�e��e� 0�� 201�

HT66F319

Enhanced A/D Flash MCU with EEPROM and UART

HT66F319

Enhanced A/D Flash MCU with EEPROM and UART

EEPROM Data Memory.................................................................................. 30

EEPROM Data Me�o�y St�u�tu�e ........................................................................................ 30

EEPROM Registe�s .............................................................................................................. 30

Reading Data f�o� the EEPROM ......................................................................................... 32

W�iting Data to the EEPROM................................................................................................ 32

W�ite P�ote�tion..................................................................................................................... 32

EEPROM Inte��upt ................................................................................................................ 32

P�og�a��ing Conside�ations................................................................................................ 33

Oscillators ...................................................................................................... 34

Os�illato� Ove�view ............................................................................................................... 34

System Clock Configurations................................................................................................ 34

Exte�nal C�ystal/Ce�a�i� Os�illato� – HXT ........................................................................... 3�

Inte�nal RC Os�illato� – HIRC ............................................................................................... 3�

Exte�nal 32.7�8kHz C�ystal Os�illato� – LXT........................................................................ 3�

Inte�nal 32kHz Os�illato� – LIRC........................................................................................... 37

Supple�enta�y Os�illato�s .................................................................................................... 37

Operating Modes and System Clocks ......................................................... 38

Syste� Clo�ks ...................................................................................................................... 38

Syste� Ope�ation Modes...................................................................................................... 39

Cont�ol Registe� .................................................................................................................... 40

Fast Wake-up........................................................................................................................ 41

Ope�ating Mode Swit�hing.................................................................................................... 42

Stand�y Cu��ent Conside�ations .......................................................................................... 4�

Wake-up................................................................................................................................ 4�

P�og�a��ing Conside�ations ............................................................................................... 47

Watchdog Timer............................................................................................. 48

Wat�hdog Ti�e� Clo�k Sou��e.............................................................................................. 48

Wat�hdog Ti�e� Cont�ol Registe� ......................................................................................... 48

Wat�hdog Ti�e� Ope�ation ................................................................................................... 49

Reset and Initialisation.................................................................................. 50

Reset Fun�tions ................................................................................................................... �0

Reset Initial Conditions ........................................................................................................ �3

Input/Output Ports ........................................................................................ 56

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

Po�t A Wake-up ..................................................................................................................... �8

I/O Po�t Cont�ol Registe�s..................................................................................................... �8

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

Pin-sha�ed Fun�tion.............................................................................................................. �0

I/O Pin St�u�tu�es.................................................................................................................. �1

P�og�a��ing Conside�ations ............................................................................................... �2

HT66F319 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

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