HT45F3W datasheet(21/167 Pages) HOLTEK

21 / 167 page

Rev. 1.50

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Rev. 1.50

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HT45F3W

R-Type Blood Pressure Meter Flash MCU

HT45F3W

R-Type Blood Pressure Meter Flash MCU

Flash Program Memory

TheProgramMemoryisthelocationwheretheusercodeorprogramisstored.Forthisdeviceseries

theProgramMemoryisFlashtype,whichmeansitcanbeprogrammedandre-programmedalarge

numberoftimes,allowingtheusertheconvenienceofcodemodificationonthesamedevice.By

usingtheappropriateprogrammingtools,theFlashdeviceofferuserstheflexibilitytoconveniently

debuganddeveloptheirapplicationswhilealsoofferingameansoffieldprogrammingand

updating.

Structure

TheProgramMemoryhasacapacityof16K×16bits.TheProgramMemoryisaddressedbythe

ProgramCounterandalsocontainsdata,tableinformationandinterruptentries.Tabledata,which

canbesetupinanylocationwithintheProgramMemory,isaddressedbyaseparatetablepointer

Initialization

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Exte�nal Inte��upt 0

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000H

004H

008H

Multi fun�tion inte��upt 0

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00CH

010H

014H

018H

Multi fun�tion inte��upt 1

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Multi fun�tion inte��upt �

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ADC Inte��upt

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100H

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01CH

Multi fun�tion inte��upt 3

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Multi fun�tion inte��upt 4

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Look-up Ta�le (�5� Wo�ds)

3FFFH

0FFH

3EFFH

3F00H

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Program Memory Structure

Special Vectors

WithintheProgramMemory,certainlocationsarereservedfortheresetandinterrupts.Thelocation

000Hisreservedforusebythedeviceresetforprograminitialisation.Afteradeviceresetis

initiated,theprogramwilljumptothislocationandbeginexecution.

Look-up Table

AnylocationwithintheProgramMemorycanbedefinedasalook-uptablewhereprogrammerscan

storefixeddata.Tousethelook-uptable,thetablepointermustfirstbesetupbyplacingtheaddress

ofthelookupdatatoberetrievedinthetablepointerregister,TBLPandTBHP.Theseregisters

definethetotaladdressofthelook-uptable.

HT45F3W Datenblatt(PDF) 21 Page - Holtek Semiconductor Inc

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