HT45R4U datasheet(2/105 Pages) HOLTEK

2 / 105 page

Rev. 1.10

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Rev. 1.10

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HT45R4U

TinyPowerTM A/D Type

e-Banking ASSP OTP MCU with LCD

Table of Contents

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

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

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

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

Pin Description ................................................................................................ 8

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

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

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

HIRC Oscillator Voltage/Temperature vs. Frequency Curves.................... 12

F�equen�y A��u�a�y (T�im 4�Hz at VDD=3V) ........................................................................ 1�

LVD/LVR Characteristics............................................................................... 12

LCD D.C. Characteristics .............................................................................. 13

Power-on Reset Characteristics................................................................... 13

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

Clo�king and Pipelining......................................................................................................... 14

P�og�am Counte�– PC........................................................................................................... 1�

Sta�k ..................................................................................................................................... 16

A�it�meti� and Logi� Unit – ALU ........................................................................................... 16

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

St�u�tu�e................................................................................................................................ 17

Spe�ial Ve�to�s ..................................................................................................................... 18

Look-up Table........................................................................................................................ 19

Table P�og�am Example........................................................................................................ �0

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

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

Gene�al Pu�pose Data �emo�y ............................................................................................ ��

Spe�ial Pu�pose Data �emo�y ............................................................................................. ��

Display �emo�y .................................................................................................................... ��

Special Function Register Description........................................................ 24

Indi�e�t Add�essing Registe�s – IAR0� IAR1 ......................................................................... �4

�emo�y Pointe�s – �P0� �P1 .............................................................................................. �4

Bank Pointer − BP................................................................................................................. ��

Accumulator − ACC............................................................................................................... ��

Program Counter Low Register − PCL.................................................................................. �6

Look-up Table Registers − TBLP, TBHP, TBLH..................................................................... �6

Status Register − STATUS.................................................................................................... �6

Inte��upt Cont�ol Registe�s.................................................................................................... �7

Time�/Event Counte� Registe�s............................................................................................. �7

Input/Output Po�ts and Cont�ol Registe�s ............................................................................. �7

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