Atmel 8051 User Manual

The 8051 Instruction Set
1-21 Atmel 8051 Microcontrollers Hardware Manual
4316B–8051–02/04
1.13 Instruction Table Table 1-14 shows the Hex value of each instruction detailing the:
 byte size
 number of cycles
 flags modified by the instruction
Table 1-14. 8051 Instruction Table
xF
INC R7
1-1
DEC R7
1-1
ADD A,R7
1-1,C,OV,AC
ADDC A,R7
1-1,C,OV,AC
ORL A,R7
1-1
ANL A,R7
1-1
XRL A,R7
1-1
MOV R7,#imm
2-1
MOV dir,R7
2-2
SUBB A,R7
1-1,C,OV,AC
MOV R7,dir
2-2
CJNE R7,#imm,rel
3-2,C
XCH A,R7
1-1
DJNZ R7,rel
2-2
MOV A,R7
1-1
MOVX R7,A
1-1
xE
INC R6
1-1
DEC R6
1-1
ADD A,R6
1-1,C,OV,AC
ADDC A,R6
1-1,C,OV,AC
ORL A,R6
1-1
ANL A,R6
1-1
XRL A,R6
1-1
MOV R6,#imm
2-1
MOV dir,R6
2-2
SUBB A,R6
1-1,C,OV,AC
MOV R6,dir
2-2
CJNE R6,#imm,rel
3-2,C
XCH A,R6
1-1
DJNZ R6,rel
2-2
MOV A,R6
1-1
MOVX R6,A
1-1
xD
INC R5
1-1
DEC R5
1-1
ADD A,R5
1-1,C,OV,AC
ADDC A,R5
1-1,C,OV,AC
ORL A,R5
1-1
ANL A,R5
1-1
XRL A,R5
1-1
MOV R5,#imm
2-1
MOV dir,R5
2-2
SUBB A,R5
1-1,C,OV,AC
MOV R5,dir
2-2
CJNE R5,#imm,rel
3-2,C
XCH A,R5
1-1
DJNZ R5,rel
2-2
MOV A,R5
1-1
MOVX R5,A
1-1
xC
INC R4
1-1
DEC R4
1-1
ADD A,R4
1-1,C,OV,AC
ADDC A,R4
1-1,C,OV,AC
ORL A,R4
1-1
ANL A,R4
1-1
XRL A,R4
1-1
MOV R4,#imm
2-1
MOV dir,R4
2-2
SUBB A,R4
1-1,C,OV,AC
MOV R4,dir
2-2
CJNE R4,#imm,rel
3-2,C
XCH A,R4
1-1
DJNZ R4,rel
2-2
MOV A,R4
1-1
MOVX R4,A
1-1
xB
INC R3
1-1
DEC R3
1-1
ADD A,R3
1-1,C,OV,AC
ADDC A,R3
1-1,C,OV,AC
ORL A,R3
1-1
ANL A,R3
1-1
XRL A,R3
1-1
MOV R3,#imm
2-1
MOV dir,R3
2-2
SUBB A,R3
1-1,C,OV,AC
MOV R3,dir
2-2
CJNE R3,#imm,rel
3-2,C
XCH A,R3
1-1
DJNZ R3,rel
2-2
MOV A,R3
1-1
MOVX R3,A
1-1
xA
INC R2
1-1
DEC R2
1-1
ADD A,R2
1-1,C,OV,AC
ADDC A,R2
1-1,C,OV,AC
ORL A,R2
1-1
ANL A,R2
1-1
XRL A,R2
1-1
MOV R2,#imm
2-1
MOV dir,R2
2-2
SUBB A,R2
1-1,C,OV,AC
MOV R2,dir
2-2
CJNE R2,#imm,rel
3-2,C
XCH A,R2
1-1
DJNZ R2,rel
2-2
MOV A,R2
1-1
MOVX R2,A
1-1
x9
INVC R1
1-1
DEC R1
1-1
ADD A,R1
1-1,C,OV,AC
ADDC A,R1
1-1,C,OV,AC
ORL A,R1
1-1
ANL A,R1
1-1
XRL A,R1
1-1
MOV R1,#imm
2-1
MOV dir,R1
2-2
SUBB A,R1
1-1,C,OV,AC
MOV R1,dir
2-2
CJNE R1,#imm,rel
3-2,C
XCH A,R1
1-1
DJNZ R1,rel
2-2
MOV A,R1
1-1
MOVX R1,A
1-1

Atmel 8051 Specifications

General

Brand	Atmel
Model	8051
Category	Microcontrollers
Language	English