HT67F488 datasheet(21/171 Pages) HOLTEK

21 / 171 page

Rev. 1.60

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HT67F488/HT67F489

TinyPowerTM A/D Flash MCU with LCD & EEPROM

Flash Program Memory

TheProgramMemoryisthelocationwheretheusercodeorprogramisstored.Forthisdeviceseries

theProgramMemoryisFlashtype,whichmeansitcanbeprogrammedandre-programmedalarge

numberoftimes,allowingtheusertheconvenienceofcodemodificationonthesamedevice.By

usingtheappropriateprogrammingtools,theFlashdevicesofferuserstheflexibilitytoconveniently

debuganddeveloptheirapplicationswhilealsoofferingameansoffieldprogrammingand

updating.

Structure

TheProgramMemoryhasacapacityof4K×16bitsto8K×16bits.TheProgramMemoryis

addressedbytheProgramCounterandalsocontainsdata,tableinformationandinterruptentries.

Tabledata,whichcanbesetupinanylocationwithintheProgramMemory,isaddressedbya

separatetablepointerregister.

Device

Capacity

HT67F488

4K×16

HT67F489

8K×16

Special Vectors

WithintheProgramMemory,certainlocationsarereservedfortheresetandinterrupts.Thelocation

000Hisreservedforusebythedeviceresetforprograminitialisation.Afteradeviceresetis

initiated,theprogramwilljumptothislocationandbeginexecution.

0000H

0004H

002CH

FFFH

Reset

Interrupt

Vector

16 bits

Reset

Interrupt

Vector

16 bits

1FFFH

HT67F488

HT67F489

1000H

Program Memory Structure

HT67F488 데이터시트(PDF) 21 Page - Holtek Semiconductor Inc

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