HT69F2562 datasheet(22/194 Pages) HOLTEK

22 / 194 page

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HT69F2562

Ultra-Low Power Flash MCU with LCD & EEPROM

HT69F2562

Ultra-Low Power Flash MCU with LCD & EEPROM

Look-�p Table

Initialisation Secto�

000H

004H

0�CH

1FFFH

Inte��pt Vecto�s

1� bits

n00H

nFFH

�000H

3FFFH

Bank 1

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.

Aftersettingupthetablepointer,thetabledatacanberetrievedfromtheProgramMemoryusingthe

correspondingtablereadinstructionsuchas“TABRD[m]”or“TABRDL[m]”respectivelywhen

thememory[m]islocatedinsector0.Ifthememory[m]islocatedinothersectors,thedatacanbe

retrievedfromtheprogrammemoryusingthecorrespondingextendedtablereadinstructionsuchas

“LTABRD[m]”or“LTABRDL[m]”respectively.Whentheinstructionisexecuted,thelowerorder

tablebytefromtheProgramMemorywillbetransferredtotheuserdefinedDataMemoryregister[m]

asspecifiedintheinstruction.ThehigherordertabledatabytefromtheProgramMemorywillbe

transferredtotheTBLHspecialregister.

Theaccompanyingdiagramillustratestheaddressingdataflowofthelook-uptable.

Last Page o�

TBHP Registe�

TBLP Registe�

Data

1� bits

P�og�am Memo��

Registe� TBLH

Use� Selected

Registe�

High B�te

Low B�te

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