HT45F12 datasheet(20/104 Pages) HOLTEK

20 / 104 page

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HT45F12

8-Bit Flash MCU with Op Amps & Comparators

HT45F12

8-Bit Flash MCU with Op Amps & Comparators

Initialisation Vecto�

Exte�nal Inte��u�t 1 Vecto�

Exte�nal Inte��u�t 0 Vecto�

Ti�e�/Event Counte�

Inte��u�t Vecto�

Rese�ved

Multi-function

Inte��u�t Vecto�

Look-u� Ta�le

(�5� wo�ds)

Look-u� Ta�le

(�5� wo�ds)

Note: n = 0 ~ 3

000H

004H

008H

00CH

010H

014H

018H

n00H

nFFH

300H

3FFH

P�og�a� Me�o�y

(10�4*15)

15-�it

Program Memory Structure

Look-up Table

AnylocationwithintheProgramMemorycanbedefinedasalook-uptablewhereprogrammerscan

storefixeddata.Tousethelook-uptable,thetablepointermustfirstbesetupbyplacingtheaddress

ofthelookupdatatoberetrievedinthetablepointerregister,TBLPandTBHP.Theseregisters

definethetotaladdressofthelook-uptable.

Aftersettingupthetablepointer,thetabledatacanberetrievedfromtheProgramMemoryusing

the“TABRDC[m]”or“TABRDL[m]”instructions,respectively.Whentheinstructionisexecuted,

thelowerordertablebytefromtheProgramMemorywillbetransferredtotheuserdefinedData

Memoryregister[m]asspecifiedintheinstruction.Thehigherordertabledatabytefromthe

ProgramMemorywillbetransferredtotheTBLHspecialregister.Anyunusedbitsinthistransferred

higherorderbytewillbereadas“0”.Theaccompanyingdiagramillustratestheaddressingdataflow

ofthelook-uptable.

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