ETIC 2230 Guia do Utilizador descarregar pdf (Página 19)

Rev. 1.10 18 November 14, 2014 Rev. 1.10 19 November 14, 2014

HT66FW2230

Wireless Charger A/D Flash 8-Bit MCU

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Program Memory Structure

Look-up Table

AnylocationwithintheProgramMemorycanbedenedasalook-uptablewhereprogrammerscan

storexeddata.Tousethelook-uptable,thetablepointermustrstbesetupbyplacingtheaddress

ofthelookupdatatoberetrievedinthetablepointerregister,TBLPandTBHP.Theseregisters

denethetotaladdressofthelook-uptable.

Aftersettingupthetablepointer,thetabledatacanberetrievedfromtheProgramMemoryusing

the“TABRD[m]”or“TABRDL[m]”instructions,respectively.Whentheinstructionisexecuted,

thelowerordertablebytefromtheProgramMemorywillbetransferredtotheuserdefined

DataMemoryregister[m]asspecifiedintheinstruction.Thehigherordertabledatabytefrom

theProgramMemorywillbetransferredtotheTBLHspecialregister.Anyunusedbitsinthis

transferredhigherorderbytewillbereadas“0”.

Theaccompanyingdiagramillustratestheaddressingdataowofthelook-uptable.

User S electe d

High B yteLow B yte

Last p age o r

TBHP R egister

TBLP R egis te r

Data

Address

16 b its

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Instruction

Table Location Bits

b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

TABRD [m] @11 @10 @9 @8 @7 @6 @5 @4 @3 @2 @1 @0

TABRDL [m] 1 1 1 1 @7 @6 @5 @4 @3 @2 @1 @0

Table Location

Note:b11~b0:Tablelocationbits

@7~@0:Tablepointer(TBLP)bits

@11~@8:Tablepointer(TBHP)bits

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 147 148

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ETIC 2230 Guia do Utilizador Página 19