HT45F5R datasheet(3/138 Pages) HOLTEK

3 / 138 page

Rev. 1.10

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Rev. 1.10

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HT45F5R

Charger ASSP Flash MCU

HT45F5R

Charger ASSP Flash MCU

Special Function Register Description........................................................ 29

Indi�e�t Add�essing Registe�s – IAR0� IAR1 ......................................................................... �9

Me�o�y Pointe�s – MP0� MP1 .............................................................................................. �9

Bank Pointe� – BP................................................................................................................. �0

A��u�ulato� – ACC............................................................................................................... �0

P�og�a� Counte� Low Registe� – PCL.................................................................................. �0

Look-up Ta�le Registe�s – TBLP� TBHP� TBLH..................................................................... �0

Status Registe� – STATUS.................................................................................................... �1

EEPROM Data Memory.................................................................................. 33

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

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

Reading Data f�o� the EEPROM ........................................................................................ �5

W�iting Data to the EEPROM................................................................................................ �5

W�ite P�ote�tion..................................................................................................................... �5

EEPROM Inte��upt ................................................................................................................ �5

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

Oscillators ...................................................................................................... 37

Os�illato� Ove�view ............................................................................................................... �7

System Clock Configurations................................................................................................ �7

Inte�nal RC Os�illato� – HIRC ............................................................................................... �8

Inte�nal ��kHz Os�illato� – LIRC........................................................................................... �8

Supple�enta�y Os�illato�...................................................................................................... �8

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

Syste� Clo�ks ...................................................................................................................... �8

Syste� Ope�ation Modes...................................................................................................... 40

Cont�ol Registe� .................................................................................................................... 41

Ope�ating Mode Swit�hing ................................................................................................... 4�

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

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

Watchdog Timer............................................................................................. 47

Wat�hdog Ti�e� Clo�k Sou��e.............................................................................................. 47

Wat�hdog Ti�e� Cont�ol Registe� ......................................................................................... 47

Wat�hdog Ti�e� Ope�ation ................................................................................................... 48

Reset and Initialisation.................................................................................. 49

Reset Fun�tions .................................................................................................................... 49

Reset Initial Conditions ......................................................................................................... 51

Input/Output Ports......................................................................................... 54

Pull-high Resisto�s ................................................................................................................ 54

Po�t A Wake-up ..................................................................................................................... 55

I/O Po�t Cont�ol Registe�s..................................................................................................... 55

I/O Po�t Sou��e Cu��ent Cont�ol............................................................................................ 5�

Pin-sha�ed Fun�tions ............................................................................................................ 57

Pin-sha�ed Fun�tion Sele�tion Registe�s.............................................................................. 57

I/O Pin St�u�tu�es.................................................................................................................. �0

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

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