HT45F4M datasheet(2/138 Pages) HOLTEK

2 / 138 page

Rev. 1.10

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Rev. 1.10

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HT45F4M

Lithium Battery Backup Power ASSP MCU

HT45F4M

Lithium Battery Backup Power ASSP MCU

Table of Contents

Features............................................................................................................ 6

CPU Feat��es ......................................................................................................................... 6

Pe�iphe�al Feat��es................................................................................................................. 6

General Description ........................................................................................ 7

Block Diagram.................................................................................................. 7

Pin Assignment................................................................................................ 8

Pin Description ................................................................................................ 9

Absolute Maximum Ratings.......................................................................... 10

D.C. Characteristics....................................................................................... 10

A.C. Characteristics........................................................................................11

ADC Electrical Characteristics..................................................................... 12

Over Voltage/Current circuit Electrical Characteristics ............................. 13

Power on Reset Electrical Characteristics.................................................. 13

System Architecture...................................................................................... 14

Clocking and Pipelining......................................................................................................... 14

P�og�am Co�nte�................................................................................................................... 1�

Stack ..................................................................................................................................... 16

A�ithmetic and Logic Unit – ALU ........................................................................................... 16

Flash Program Memory................................................................................. 17

St��ct��e................................................................................................................................ 17

Special Vecto�s ..................................................................................................................... 17

Look-�p Table........................................................................................................................ 18

Table P�og�am Example........................................................................................................ 19

In Ci�c�it P�og�amming ......................................................................................................... �0

On-Chip Deb�g S�ppo�t – OCDS ......................................................................................... �1

RAM Data Memory......................................................................................... 21

St��ct��e................................................................................................................................ �1

Special Function Register Description........................................................ 23

Indi�ect Add�essing Registe�s – IAR0� IAR1 ......................................................................... ��

Memo�� Pointe�s – MP0� MP1 .............................................................................................. ��

Bank Pointe� – BP................................................................................................................. �4

Acc�m�lato� – ACC............................................................................................................... �4

P�og�am Co�nte� Low Registe� – PCL.................................................................................. �4

Look-�p Table Registe�s – TBLP� TBHP� TBLH..................................................................... �4

Stat�s Registe� – STATUS.................................................................................................... ��

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

EEPROM Data Memo�� St��ct��e ........................................................................................ �7

EEPROM Registe�s .............................................................................................................. �7

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

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