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Instruction Set Summary (cont'd)
Mnemonic
Data Transfer
MOV
A,Rn
*)
MOV
A,direct
MOV
A,@Ri
MOV
A,#data
MOV
Rn,A
MOV
Rn,direct
MOV
Rn,#data
MOV
direct,A
MOV
direct,Rn
MOV
direct,direct
MOV
direct,@Ri
MOV
direct,#data
MOV
@Ri,A
MOV
@Ri,direct
MOV
@Ri, #data
MOV
DPTR, #data16 Load data pointer with a 16-bit constant
MOVC A,@A + DPTR
MOVC A,@A + PC
MOVX A,@Ri
MOVX A,@DPTR
MOVX @Ri,A
MOVX @DPTR,A
PUSH direct
POP
direct
XCH
A,Rn
XCH
A,direct
XCH
A,@Ri
XCHD A,@Ri
*) MOV A,ACC is not a valid instruction
Semiconductor Group
Description
Move register to accumulator
Move direct byte to accumulator
Move indirect RAM to accumulator
Move immediate data to accumulator
Move accumulator to register
Move direct byte to register
Move immediate data to register
Move accumulator to direct byte
Move register to direct byte
Move direct byte to direct byte
Move indirect RAM to direct byte
Move immediate data to direct byte
Move accumulator to indirect RAM
Move direct byte to indirect RAM
Move immediate data to indirect RAM
Move code byte relative to DPTR to accumulator
Move code byte relative to PC to accumulator
Move external RAM (8-bit addr.) to A
Move external RAM (16-bit addr.) to A
Move A to external RAM (8-bit addr.)
Move A to external RAM (16-bit addr.)
Push direct byte onto stack
Pop direct byte from stack
Exchange register with accumulator
Exchange direct byte with accumulator
Exchange indirect RAM with accumulator
Exchange low-order nibble indir. RAM with A
*
211
Instruction Set
Byte
Cycle
1
1
2
1
1
1
2
1
1
1
2
2
2
1
2
1
2
2
3
2
2
2
3
2
1
1
2
2
2
1
3
2
1
2
1
2
1
2
1
2
1
2
1
2
2
2
2
2
1
1
2
1
1
1
1
1
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