80C51指令表一、数据传送指令MOV A,Rn ; (Rn)→AMOV A,direct ; (direct)→AMOV A,@Ri ; ((Ri))→AMOV A,#data ; #data→AMOV Rn,A ; (A)→ RnMOV Rn,direct ; (direct)→ RnMOV Rn,#data ; #data→ RnMOV direct,A ; (A)→directMOV direct,Rn ; (Rn)→directMOV direct1,direct2 ; (direct1)→direct2MOV direct,@Ri ; ((Ri))→directMOV direct,#data ; #data→directMOV @Ri,A ; ((Ri))→AMOV @Ri,direct ; (direct)→(Ri)MOV @Ri,#data ; #data→ ((Ri))MOV DPTR,#data16 ; dataH→ DPH,data → LDPL MOVX A,@DPTR ; ((DPTR))→AMOVX @DPTR,A ; (A)→(DPTR)MOVX A,@Ri ; ((Ri))→AMOVX @Ri,A ;(A) →(Ri)MOVC A,@A+PC ; (PC)+1→PC,((A)+(PC))→ A MOVC A,@A+DPTR ; (A)+(DPTR)→APUSH direct ; (SP)+1 → SP,(direct) → (SP) POP direct ;((SP)) → (direct), (SP)-1 → SP XCH A,Rn ; (A) ←→(Rn)XCH A,direct ; (A) ←→(direct)XCH A,@Ri ; (A) ←→((Ri))XCHD A,@Ri ; (A)0~3 ←→((Ri))0~3SWAP A ; (A)0~3 ←→(A)4~7二、算术运算指令ADD A,Rn ; (A) + (Rn)→ AADD A,direct ; (A) + (direct)→ AADD A,@Ri ; (A) + ((Ri))→ AADD A,#data ; (A) + #data→ AADDC A,Rn ; (A) + (Rn) + cy→ AADDC A,direct ; (A) + (direct) + cy→ AADDC A,@Ri ; (A) + ((Ri)) + cy→ AADDC A,#data ; (A) + # data + cy→ ASUBB A,Rn ; (A) - ( Rn) - cy→ ASUBB A,direct ; (A) - (direct) - cy→ ASUBB A,@Ri ; (A) - ((Ri)) - cy→ ASUBB A,#data ; (A) - # data - cy→ AINC A ; (A) + 1 → AINC Rn ; (Rn) + 1 →RnINC direct ; (direct) + 1 →directINC @Ri ; ((Ri)) + 1 → (Ri)INC DPTR ; (DPTR) + 1 → DPTRDEC A ; (A) - 1 → ADEC Rn ; (Rn) - 1 →RnDEC direct ; (direct) - 1 →directDEC @Ri ; ((Ri)) - 1 → (Ri)MUL AB ; (A)·(B) → ABDIV AB ; (A) / (B) 商→ A , 余数→ B DA A ; 对A进行十进制调整三、逻辑操作指令ANL A,Rn ; (A)∧(Rn) → AANL A,direct ; (A)∧(direct) →AANL A,@Ri ; (A)∧((Ri)) → AANL A,#data ; (A)∧#data → AANL direct,A ; (direct)∧(A) →directANL direct,#data ; (direct)∧#data →directORL A,Rn ; (A)∨(Rn) → AORL A,direct ; (A)∨(direct) → AORL A,@Ri ; (A)∨((Ri)) → AORL A,#data ; (A)∨#data → AORL direct,A ; (direct)∨(A) →directORL direct,#data ; (direct)∨#data →directXRL A,Rn ; (A)⊕(Rn) → AXRL A,direct ; (A)⊕(direct) → AXRL A,@Ri ; (A)⊕((Ri)) → AXRL A,#data ; (A)⊕#data → AXRL direct,A ; (direct)⊕(A) →directXRL direct,#data ; (direct)⊕#data →directCLR A ; 0 → ACPL A ; (A) → ARL A ; (A)循环左移1位RLC A ; (A)带进位循环左移1位RR A ; (A)循环右移1位RRC A ; (A)带进位循环右移1位SWAP A ;(A)半字节交换四、位操作指令CLR C ; 0 → cyCLR bit ; 0 → bitSETB C ; 1 → cySETB bit ; 1 → bitCPL C ; (cy) → cyCPL bit ; (bit) → bitANL C,bit ; (cy) ∧(bit) → cyANL C,/bit ; (cy) ∧(bit) → cyORL C,bit ; (cy) ∨(bit) → cyORL C,/bit ; (cy) ∨(bit) → cyMOV C,bit ; (bit) → cyMOV bit,C ; (cy) → bit五、控制转移指令ACALL addr11 ; (PC)+2 → PC , (SP)+1 → SP;(PCL) → (SP),(SP)+1 → SP;(PCH) → (SP),addr11 → PC10～0 LCALL addr16 ; (PC)+3 → PC , (SP)+1 → SP;(PCL) → (SP),(SP)+1 → SP;(PCH) → (SP),addr16 → PCRET ; (SP) → PCH,(SP) -1 → SP;(SP) → PCL,(SP) -1 → SPRETI ; (SP) → PCH,(SP) -1 → SP;(SP) → PCL,(SP) -1 → SPAJMP add11 ; (PC)+2 → PC，;addr11 → CP10～0 LJMP add16 ; addr16 → PCSJMP rel ; (PC)+2 → PC,(PC)+ rel → PC JMP @A+DPTR ; ((A)+(DPTR))→ PCJZ rel ; (A)=0 : (PC)+2 +rel =PC; (A)≠0 : (PC)+2 =PCJNZ rel ; (A)≠0 : (PC)+2 +rel =PC; (A)=0 : (PC)+2 =PCJC rel ; (C)=1 : (PC)+2+rel =PC; (C)=0 : (PC)+2 =PCJNC rel ; (C)=0 : (PC)+2+rel =PC; (C)=1 : (PC)+2 =PCJB bit,rel ; (bit)=1 : 则(PC)+3+rel =PC; (bit)=0 : 则(PC)+3 =PCJNB bit,rel ; (bit)=0 : 则(PC)+3+rel =PC; (bit)=1 : 则(PC)+3 =PCJBC bit,rel ; (bit)=1 : 则(PC)+3+rel =PC, 0 → bit; (bit)=0 : 则(PC)+3 =PCCJNE A,direct,rel ; (A) = (direct), 则(PC)+3 → PC; (A) > (direct), 则(PC)+3+rel → PC,0 → CY; (A) < (direct), 则(PC)+3+rel → PC,1 → CY CJNE A,#data,rel ; (A) = #data, 则(PC)+3 → PC; (A) > #data, 则(PC)+3+rel → PC,0 → CY; (A) < #data, 则(PC)+3+rel → PC,1 → CY CJNE Rn,#data,rel ; (Rn) = #ata , 则(PC)+3 → PC; (Rn) > #ata, 则(PC)+3+rel → PC,0 → CY; (Rn) < #ata, 则(PC)+3+rel → PC,1 → CY CJNE @Ri,#data,rel ; ((Rn)) = #data, 则(PC)+3 → PC; ((Rn)) > #ata, 则(PC)+3+rel → PC,0 → CY; ((Rn)) < #ata, 则(PC)+3+rel → PC,1 → CY DJNZ Rn,rel ; (Rn)-1 → Rn,(Rn)=0,则(PC)+2 → PC;(Rn)≠0,则(PC)+2+rel → PCDJNZ direct,rel ; (direct)-1 → (direct),;(direct) ≠0,则(PC)+3+rel → PC;(direct)=0,则(PC)+3 → PCNOP ; 空操作。