HT47C20 datasheet(37/56 Pages) HOLTEK

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Instruction Set Summary

Mnemonic

Description

Flag Affected

Arithmetic

ADD A,[m]

ADDM A,[m]

ADD A,x

ADC A,[m]

ADCM A,[m]

SUB A,x

SUB A,[m]

SUBM A,[m]

SBC A,[m]

SBCM A,[m]

DAA [m]

Add data memory to ACC

Add ACC to data memory

Add immediate data to ACC

Add data memory to ACC with carry

Add ACC to register with carry

Subtract immediate data from ACC

Subtract data memory from ACC

Subtract data memory from ACC with result in data memory

Subtract data memory from ACC with carry

Subtract data memory from ACC with carry and result in

data memory

Decimal adjust ACC for addition with result in data memory

Z, C, AC, OV

Logic Operation

AND A,[m]

OR A,[m]

XOR A,[m]

ANDM A,[m]

ORM A,[m]

XORM A,[m]

AND A,x

OR A,x

XOR A,x

CPL [m]

CPLA [m]

AND data memory to ACC

OR data memory to ACC

Exclusive-OR data memory to ACC

AND ACC to data memory

OR ACC to data memory

Exclusive-OR ACC to data memory

AND immediate data to ACC

OR immediate data to ACC

Exclusive-OR immediate data to ACC

Complement data memory

Complement data memory with result in ACC

Increment & Decrement

INCA [m]

INC [m]

DECA [m]

DEC [m]

Increment data memory with result in ACC

Increment data memory

Decrement data memory with result in ACC

Decrement data memory

Rotate

RRA [m]

RR [m]

RRCA [m]

RRC [m]

RLA [m]

RL [m]

RLCA [m]

RLC [m]

Rotate data memory right with result in ACC

Rotate data memory right

Rotate data memory right through carry with result in ACC

Rotate data memory right through carry

Rotate data memory left with result in ACC

Rotate data memory left

Rotate data memory left through carry with result in ACC

Rotate data memory left through carry

None

HT47C20

January 18, 2000

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