原创 8051的汇编控制指令占用字节执行周期列表

 2007-2-27 16:08  4145 4 4 分类: MCU/ 嵌入式

8051 INSTRUCTION SET

1.Arithmetic operations:

    Mnemonic            Byte    Cyc
    ADD   A,@Ri 1 1
    ADD   A,Rn 1 1
    ADD   A,direct 2 1
    ADD   A,#data 2 1
    ADDC  A,@Ri 1 1
    ADDC  A,Rn 1 1
    ADDC  A,direct 2 1
    ADDC  A,#data 2 1
    SUBB  A,@Ri 1 1
    SUBB  A,Rn 1 1
    SUBB  A,direct 2 1
    SUBB  A,#data 2 1
    INC   A 1 1
    INC   @Ri 1 1
    INC   Rn 1 1
    INC   DPTR 1 1
    INC   direct 2 1
    INC   direct 2 1
    DEC   A 1 1
    DEC   @Ri 1 1
    DEC   Rn 1 1
    DEC   direct 2 1
    MUL    AB 1 4
    DIV   AB 1 4
    DA      A 1 1

2.Logical opreations:
    ANL   A,@Ri 1 1
    XRL   A,@Ri 1 1
    ANL   A,Rn 1 1
    XRL   A,Rn 1 1
    ANL   A,direct          2 1
    XRL   A,direct   2 1
    ANL   A,#data          2 1
    XRL   A,#data          2 1
    ANL   direct,A   2 1
    XRL   direct,A          2 1
    ANL   direct,#data 3 2
    XRL   direct,#data 3 2
    ORL   A,@Ri 1 1
    CLR   A 1 1
    ORL   A,Rn 1 1
    CPL   A 1 1
    ORL   A,direct  2 1
     RL   A 1 1
    ORL   A,#data 2 1
    RLC   A 1 1
    ORL   direct,A 2 1
    RR   A 1 1
    ORL   direct,#data 3 2
    RRC   A 1 1
    SWAP  A 1 1

3.Data transfer:
    Mnemonic            Byte Cyc
    MOV   A,@Ri 1 1
    MOV   DPTR,#data16 3 2
    MOV   A,Rn 1 1
    MOVC  A,@A+DPTR 1 2
    MOV   A,direct          2 1
    MOVC  A,@A+PC          1 2
    MOV   A,#data          2 1
    MOVX  A,@Ri 1 2
    MOV   @Ri,A 1 1
    MOVX  A,@DPTR          1 2
    MOV   @Ri,direct 2 2
    MOVX  @Ri,A 1 2
    MOV   @Ri,#data 2 1
    MOVX  @DPTR,A          1 2
    MOV   Rn,A 1 1
    PUSH  direct          2 2
    MOV   Rn,direct 2 2
    POP   direct          2 2
    MOV   Rn,#data          2 1
    XCH   A,@Ri 1 1
    MOV   direct,A     2 1
    XCH   A,Rn 1 1
    MOV   direct,@Ri 2 2
    XCH   A,direct   2 1
    MOV   direct,Rn 2 2
    XCHD  A,@Ri 1 1
    MOV   direct,direct     3 2
    MOV   direct,#data 3 2

4.Boolean variable manipulation:
    Mnemonic            Byte Cyc
    CLR   C 1 1
    ANL   C,bit 2 2
    SETB  C 1 1
    ANL   C,/bit          2 2
    CPL   C 1 1
   ORL   C,bit 2 2
    CLR   bit 2 1
    ORL   C,/bit          2 2
    SETB  bit 2 1
   MOV   C,bit 2 1
    CPL   bit 2 1
   MOV   bit,C 2 2

5.Program and machine control:
    Mnemonic            Byte Cyc
    NOP 1 1
    JZ    rel 2 2
    RET 1 2
    JNZ   rel 2 2
    RETI          1 2
    JC    rel 2 2
    ACALL addr11          2 2
    JNC   rel 2 2
    AJMP  addr11     2 2
    JB    bit,rel          3 2
    LCALL addr16          3 2
    JNB   bit,rel          3 2
    LJMP  addr16          3 2
    JBC   bit,rel          3 2
    SJMP  rel 2 2
   CJNE  A,direct,rel 3 2
    JMP   @A+DPTR          1 2
    CJNE  A,#data,rel 3 2
    DJNZ  Rn,rel          2 2
   CJNE  @Ri,#data,rel 3 2
    DJNZ  direct,rel 3 2
   CJNE  Rn,#data,rel 3 2

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