HT66F24D datasheet(2/177 Pages) HOLTEK

2 / 177 page

Rev. 1.00

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Rev. 1.00

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A/D Flash Type 8-bit MCU with EEPROM

HT66F24D/HT66F25D

Table of Contents

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

CPU Feat�res ......................................................................................................................... �

Periphera� Feat�res................................................................................................................. �

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

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

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

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

HT��F�4D............................................................................................................................. 10

HT��F�5D..............................................................................................................................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

C�ocking and Pipe�ining......................................................................................................... 18

Program Co�nter................................................................................................................... 19

Stack ..................................................................................................................................... �0

Arithmetic and Logic Unit – ALU ........................................................................................... �0

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

Str�ct�re................................................................................................................................ �1

Specia� Vectors ..................................................................................................................... �1

Look-�p Tab�e........................................................................................................................ ��

Tab�e Program Examp�e........................................................................................................ ��

In Circ�it Programming ......................................................................................................... �4

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

Str�ct�re................................................................................................................................ �5

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

Indirect Addressing Registers – IAR0� IAR1 ......................................................................... �8

Memor� Pointers – MP0� MP1 .............................................................................................. �8

Bank Pointer – BP................................................................................................................. �9

Acc�m��ator – ACC............................................................................................................... �9

Program Co�nter Low Register – PCL.................................................................................. �9

Look-�p Tab�e Registers – TBLP� TBHP� TBLH..................................................................... 30

Stat�s Register – STATUS.................................................................................................... 30

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