HT66F005 datasheet(3/109 Pages) HOLTEK

3 / 109 page

Rev. 1.30

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Rev. 1.30

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HT66F005/HT66F006

Cost-Effective A/D Flash MCU with EEPROM

HT66F005/HT66F006

Cost-Effective A/D Flash MCU with EEPROM

EEPROM Data Memory.................................................................................. 27

EEPROM Data Memo�y St�uctu�e ........................................................................................ ��

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

Reading Data f�om the EEPROM ......................................................................................... �9

W�iting Data to the EEPROM................................................................................................ �9

W�ite P�otection..................................................................................................................... �9

EEPROM Inte��u�t ................................................................................................................ �9

P�og�amming Conside�ations................................................................................................ �9

P�og�amming Exam��es........................................................................................................ 30

Oscillator ........................................................................................................ 31

Osci��ato� Ove�view ............................................................................................................... 31

System Clock Configurations................................................................................................ 31

Exte�na� C�ysta�/Ce�amic Osci��ato� – HXT ........................................................................... 31

High S�eed Inte�na� RC Osci��ato� – HIRC ........................................................................... 3�

Inte�na� 3�kHz Osci��ato� – LIRC........................................................................................... 3�

Su��ementa�y Osci��ato�...................................................................................................... 3�

Operating Modes and System Clocks ......................................................... 33

System C�ocks ...................................................................................................................... 33

System O�e�ation Modes...................................................................................................... 34

Cont�o� Registe� .................................................................................................................... 35

Fast Wake-u�........................................................................................................................ 36

O�e�ating Mode Switching and Wake-u�.............................................................................. 3�

NORM�L Mode to SLOW Mode Switching........................................................................... 38

SLOW Mode to NORM�L Mode Switching........................................................................... 39

Ente�ing the SLEEP0 Mode .................................................................................................. 39

Ente�ing the SLEEP1 Mode .................................................................................................. 40

Ente�ing the IDLE0 Mode...................................................................................................... 40

Ente�ing the IDLE1 Mode...................................................................................................... 40

Standby Cu��ent Conside�ations........................................................................................... 41

Wake-u�................................................................................................................................ 41

P�og�amming Conside�ations................................................................................................ 4�

Watchdog Timer............................................................................................. 42

Watchdog Time� C�ock Sou�ce.............................................................................................. 4�

Watchdog Time� Cont�o� Registe� ......................................................................................... 4�

Watchdog Time� O�e�ation ................................................................................................... 44

Reset and Initialisation.................................................................................. 45

Reset Ove�view..................................................................................................................... 45

Reset Functions .................................................................................................................... 46

Reset Initia� Conditions ......................................................................................................... 49

Input/Output Ports......................................................................................... 51

Pu��-high Resisto�s ................................................................................................................ 51

Po�t � Wake-u� ..................................................................................................................... 5�

I/O Po�t Cont�o� Registe�s..................................................................................................... 5�

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