HT66F25D datasheet(2/175 Pages) HOLTEK

2 / 175 page

Rev. 1.10

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Rev. 1.10

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A/D Flash Type 8-bit MCU with EEPROM

HT66F24D/HT66F25D

Table of Contents

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

CPU Featu�es ......................................................................................................................... 6

Pe�ip�e�al Featu�es................................................................................................................. 6

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

Selection Table................................................................................................. 7

Pin Assignment................................................................................................ 9

Pin Descriptions ............................................................................................ 10

HT66F�4D............................................................................................................................. 10

HT66F��D..............................................................................................................................11

Absolute Maximum Ratings.......................................................................... 12

D.C. Characteristics....................................................................................... 12

A.C. Characteristics....................................................................................... 14

LVD and LVR Electrical Characteristics....................................................... 15

A/D Converter Characteristics...................................................................... 16

Power-on Reset Characteristics................................................................... 17

System Architecture...................................................................................... 18

Clo�king and Pipelining......................................................................................................... 18

P�og�am Counte�................................................................................................................... 19

Sta�k ..................................................................................................................................... �0

A�it�meti� and Logi� Unit – ALU ........................................................................................... �0

Flash Program Memory................................................................................. 21

St�u�tu�e................................................................................................................................ �1

Spe�ial Ve�to�s ..................................................................................................................... �1

Look-up Table........................................................................................................................ ��

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

In Ci��uit P�og�amming ......................................................................................................... �4

RAM Data Memory......................................................................................... 25

St�u�tu�e................................................................................................................................ ��

Special Function Register Description........................................................ 28

Indi�e�t Add�essing Registe�s – IAR0� IAR1 ......................................................................... �8

�emo�y Pointe�s – �P0� �P1 .............................................................................................. �8

Bank Pointe� – BP................................................................................................................. �9

A��umulato� – ACC............................................................................................................... �9

P�og�am Counte� Low Registe� – PCL.................................................................................. �9

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

Status Registe� – STATUS.................................................................................................... �0

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