Intel MCS 51

ir& M=@-51 PROGRAMMER’SGUIDE AND INSTRUCTION SET
Table 11. Instruction Opoode
Hex
Number
Code of Bytee ‘nemonic
Operende
cc
CD
CE
CF
Do
D1
D2
D3
D4
D5
D6
D7
CM
D9
DA
DB
DC
DD
DE
DF
EO
El
E2
E3
1
1
1
1
2
2
2
1
1
3
1
1
2
2
2
2
2
2
2
2
1
2
1
1
XCH
XCH
XCH
XCH
POP
ACALL
SETB
SETB
DA
DJNZ
XCHD
XCHD
DJNZ
DJNZ
DJNZ
DJNZ
DJNZ
DJNZ
DJNZ
DJNZ
MOVX
AJMP
MOVX
MOVX
A,R4
A,R5
A,R6
A,R7
dateaddr
codaaddr
biladdr
c
A
dateaddr,codeaddr
A,@RO
A,@Rl
RO,codeaddr
Rl,codeaddr
R2,codeaddr
R3,cadeaddr
R4,codeaddr
R5,codaaddr
R6,c0deaddr
R7,codeaddr
A,@DPTR
codeaddr
A,@RO
A,@Rl
E4
1
CLR A
E5
2 MOV A,dateaddr
In1 xadecimal Order (Continued)
Hex
Number
Code
Mnemonic
of Bytee
Operande
E6 1
MOV
A,@RO
E7 1
MOV
A,@Rl
E8 1 MOV A,RO
E9 1
MOV A,R1
EA
1
MOV
A,R2
EB
1
MOV
A,R3
EC 1
MOV
A,R4
ED 1
MOV A,R5
EE i
MOV
A,R6
EF 1
MOV A,R7
FO 1
MOVX @DPTR,A
FI 2
ACALL
codeaddr
F2
1
MOVX @RO,A
F3 1
MOVX @Rl,A
F4
1
CPL
A
F5
2
MOV
dataaddr,A
F6 1
MOV @RO,A
F7 1
MOV @Rl~
F8 1
MOV
RO,A
F9 1
MOV
RI,A
FA 1
MOV
R2,A
FB 1
MOV
R3,A
FC
1
MOV R4,A
FD
1
MOV
R5,A
FE
1
MOV
R6,A
FF 1
MOV
R7,A
2-27