HT45F4N datasheet(3/170 Pages) HOLTEK

3 / 170 page

Rev. 1.30

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Rev. 1.30

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HT45F4N/HT45FH4N

Power Bank Flash MCU

HT45F4N/HT45FH4N

Power Bank Flash MCU

A��u�ulato� – ACC............................................................................................................... 3�

P�og�a� Counte� Low Registe� – PCL.................................................................................. 3�

Look-up Ta�le Registe�s – TBLP� TBHP� TBLH..................................................................... 3�

Status Registe� – STATUS.................................................................................................... 35

EEPROM Data Memory.................................................................................. 37

EEPROM Data Me�o�y St�u�tu�e ........................................................................................ 37

EEPROM Registe�s .............................................................................................................. 37

Reading Data f�o� the EEPROM ........................................................................................ 39

W�iting Data to the EEPROM................................................................................................ 39

W�ite P�ote�tion..................................................................................................................... 39

EEPROM Inte��upt ................................................................................................................ 39

P�og�a��ing Conside�ations................................................................................................ �0

Oscillator ........................................................................................................ 41

Os�illato� Ove�view ............................................................................................................... �1

System Clock Configurations................................................................................................ �1

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

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

Operating Modes and System Clocks ......................................................... 42

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

Syste� Ope�ation Modes...................................................................................................... �3

Cont�ol Registe� .................................................................................................................... �5

Ope�ating Mode Swit�hing ................................................................................................... �7

Stand�y Cu��ent Conside�ations........................................................................................... 50

Wake-up................................................................................................................................ 50

Watchdog Timer............................................................................................. 51

Wat�hdog Ti�e� Clo�k Sou��e.............................................................................................. 51

Wat�hdog Ti�e� Cont�ol Registe� ......................................................................................... 51

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

Reset and Initialisation.................................................................................. 53

Reset Fun�tions .................................................................................................................... 53

Reset Initial Conditions ......................................................................................................... 5�

Input/Output Ports......................................................................................... 59

Pull-high Resisto�s ................................................................................................................ 59

Po�t A Wake-up ..................................................................................................................... �0

I/O Po�t Cont�ol Registe�s..................................................................................................... �1

Pin-�e�apping Fun�tions ...................................................................................................... ��

Pin-�e�apping Registe� ........................................................................................................ ��

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

P�og�a��ing Conside�ations................................................................................................ �5

Timer Modules – TM ...................................................................................... 66

Int�odu�tion ........................................................................................................................... ��

TM Ope�ation ........................................................................................................................ ��

TM Clo�k Sou��e................................................................................................................... ��

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