单片机指令助记符中英文51单片机汇编指令集2009-04-09 11:00（1）数据传送类指令（7种助记符）MOV（英文为Move）：对内部数据寄存器RAM和特殊功能寄存器SFR的数据进行传送；MOVC（Move Code）读取程序存储器数据表格的数据传送；MOVX(Move External RAM)对外部RAM的数据传送；XCH(Exchange)字节交换；XCHD(Exchange low-order Digit)低半字节交换；PUSH(Push onto Stack)入栈；POP (Pop from Stack)出栈；（2）算术运算类指令（8种助记符）ADD(Addition) 加法；ADDC(Add with Carry) 带进位加法；SUBB(Subtract with Borrow) 带借位减法；DA(Decimal Adjust) 十进制调整；INC(Increment) 加1；DEC(Decrement) 减1；MUL(Multiplication、Multiply) 乘法；DIV(Division、Divide) 除法；(3)逻辑运算类指令（10种助记符）ANL(AND Logic) 逻辑与；ORL(OR Logic) 逻辑或；XRL(Exclusive-OR Logic) 逻辑异或；CLR(Clear) 清零；CPL(Complement) 取反；RL(Rotate left) 循环左移；RLC(Rotate Left throught the Carry flag) 带进位循环左移；RR(Rotate Right) 循环右移；RRC(Rotate Right throught the Carry flag) 带进位循环右移；SWAP (Swap)低4位与高4位交换；(4)控制转移类指令（17种助记符）ACALL（Absolute subroutine Call）子程序绝对调用；LCALL（Long subroutine Call）子程序长调用；RET（Return from subroutine）子程序返回；RETI（Return from Interruption）中断返回；SJMP（Short Jump）短转移；AJMP（Absolute Jump）绝对转移；LJMP（Long Jump）长转移；CJNE (Compare Jump if Not Equal)比较不相等则转移；DJNZ (Decrement Jump if Not Zero)减１后不为０则转移；JZ (Jump if Zero)结果为０则转移；JNZ (Jump if Not Zero) 结果不为０则转移；JC (Jump if the Carry flag is set)有进位则转移；JNC (Jump if Not Carry)无进位则转移；JB (Jump if the Bit is set)位为１则转移；JNB (Jump if the Bit is Not set) 位为０则转移；JBC(Jump if the Bit is set and Clear the bit) 位为１则转移，并清除该位；NOP (No Operation)空操作；（5）位操作指令（1种助记符）SETB(Set Bit)位置１。

指令格式功能简述字节数周期一、数据传送类指令MOV A, Rn 寄存器送累加器1 1MOV Rn,A 累加器送寄存器1 1MOV A ,@Ri 内部RAM单元送累加器1 1MOV @Ri ,A 累加器送内部RAM单元1 1MOV A ,#data 立即数送累加器2 1MOV A ,direct 直接寻址单元送累加器2 1MOV direct ,A 累加器送直接寻址单元2 1MOV Rn,#data 立即数送寄存器2 1MOV direct ,#data 立即数送直接寻址单元3 2MOV @Ri ,#data 立即数送内部RAM单元2 1MOV direct ,Rn 寄存器送直接寻址单元2 2MOV Rn ,direct 直接寻址单元送寄存器2 2MOV direct ,@Ri 内部RAM单元送直接寻址单元2 2 MOV @Ri ,direct 直接寻址单元送内部RAM单元2 2 MOV direct2,direct1 直接寻址单元送直接寻址单元3 2 MOV DPTR ,#data16 16位立即数送数据指针3 2MOVX A ,@Ri 外部RAM单元送累加器(8位地址) 1 2 MOVX @Ri ,A 累加器送外部RAM单元(8位地址) 1 2 MOVX A ,@DPTR 外部RAM单元送累加器(16位地址) 1 2 MOVX @DPTR ,A 累加器送外部RAM单元(16位地址) 1 2 MOVC A ,@A+DPTR 查表数据送累加器(DPTR为基址) 1 2 MOVC A ,@A+PC 查表数据送累加器(PC为基址) 1 2XCH A ,@Ri 累加器与内部RAM单元交换1 1XCHD A ,direct 累加器与直接寻址单元交换2 1 XCHD A ,@Ri 累加器与内部RAM单元低4位交换1 1 SWAP A 累加器高4位与低4位交换1 1POP direct 栈顶弹出指令直接寻址单元2 2PUSH direct 直接寻址单元压入栈顶2 2二、算术运算类指令ADD A, Rn 累加器加寄存器1 1ADD A, @Ri 累加器加内部RAM单元1 1ADD A, direct 累加器加直接寻址单元2 1ADD A, #data 累加器加立即数2 1ADDC A, Rn 累加器加寄存器和进位标志1 1ADDC A, @Ri 累加器加内部RAM单元和进位标志1 1 ADDC A, #data 累加器加立即数和进位标志2 1 ADDC A, direct 累加器加直接寻址单元和进位标志2 1 INC A 累加器加1 1 1INC Rn 寄存器加1 1 1INC direct 直接寻址单元加1 2 1INC @Ri 内部RAM单元加1 1 1INC DPTR 数据指针加1 1 2DA A 十进制调整1 1SUBB A, Rn 累加器减寄存器和进位标志1 1SUBB A, @Ri 累加器减内部RAM单元和进位标志1 1 SUBB A, #data 累加器减立即数和进位标志2 1 SUBB A, direct 累加器减直接寻址单元和进位标志2 1 DEC A 累加器减1 1 1DEC Rn 寄存器减1 1 1DEC @Ri 内部RAM单元减1 1 1DEC direct 直接寻址单元减1 2 1MUL AB 累加器乘寄存器B 1 4DIV AB 累加器除以寄存器B 1 4三、逻辑运算类指令ANL A, Rn 累加器与寄存器1 1ANL A, @Ri 累加器与内部RAM单元1 1ANL A, #data 累加器与立即数2 1ANL A, direct 累加器与直接寻址单元2 1ANL direct, A 直接寻址单元与累加器2 1ANL direct, #data 直接寻址单元与立即数3 1ORL A, Rn 累加器或寄存器1 1ORL A,@Ri 累加器或内部RAM单元1 1ORL A,#data 累加器或立即数2 1ORL A,direct 累加器或直接寻址单元2 1ORL direct, A 直接寻址单元或累加器2 1ORL direct, #data 直接寻址单元或立即数3 1XRL A,@Ri 累加器异或内部RAM单元1 1XRL A,#data 累加器异或立即数2 1XRL A,direct 累加器异或直接寻址单元2 1XRL direct, A 直接寻址单元异或累加器2 1XRL direct, #data 直接寻址单元异或立即数3 2RL A 累加器左循环移位1 1RLC A 累加器连进位标志左循环移位1 1RR A 累加器右循环移位1 1RRC A 累加器连进位标志右循环移位1 1CPL A 累加器取反1 1CLR A 累加器清零1 1四、控制转移类指令类ACCALL addr11 2KB范围内绝对调用2 2AJMP addr11 2KB范围内绝对转移2 2LCALL addr16 2KB范围内长调用3 2LJMP addr16 2KB范围内长转移3 2SJMP rel 相对短转移2 2JMP @A+DPTR 相对长转移1 2RET 子程序返回1 2RET1 中断返回1 2JZ rel 累加器为零转移2 2JNZ rel 累加器非零转移2 2CJNE A ,#data ,rel 累加器与立即数不等转移3 2 CJNE A ,direct ,rel 累加器与直接寻址单元不等转移3 2 CJNE Rn,#data ,rel 寄存器与立即数不等转移3 2 CJNE @Ri ,#data,rel RAM单元与立即数不等转移3 2 DJNZ Rn ,rel 寄存器减1不为零转移2 2DJNZ direct ,rel 直接寻址单元减1不为零转移3 2 NOP 空操作1 1五、布尔操作类指令MOV C, bit 直接寻址位送C 2 1MOV bit, C C送直接寻址位2 1CLR C C清零1 1CLR bit 直接寻址位清零2 1CPL C C取反1 1CPL bit 直接寻址位取反2 1SETB C C置位1 1SETB bit 直接寻址位置位2 1ANL C, bit C逻辑与直接寻址位2 2ANL C, /bit C逻辑与直接寻址位的反2 2ORL C, bit C逻辑或直接寻址位2 2ORL C, /bit C逻辑或直接寻址位的反2 2JC rel C为1转移2 2JNC rel C为零转移2 2JB bit,rel 直接寻址位为1转移3 2JNB bit,rel 直接寻址为0转移1.通用数据传送指令.MOV----> moveMOVSX---->extended move with sign data MOVZX---->extended move with zero data PUSH---->pushPOP---->popPUSHA---->push allPOPA---->pop allPUSHAD---->push all dataPOPAD---->pop all dataBSWAP---->byte swapXCHG---->exchangeCMPXCHG---->compare and change XADD---->exchange and addXLAT---->translate2.输入输出端口传送指令.IN---->inputOUT---->output3.目的地址传送指令.LEA---->load effective addressLDS---->load DSLES---->load ESLFS---->load FSLGS---->load GSLSS---->load SS4.标志传送指令.LAHF---->load AH from flagSAHF---->save AH to flagPUSHF---->push flagPOPF---->pop flagPUSHD---->push dflagPOPD---->pop dflag二、算术运算指令ADD---->addADC---->add with carryINC---->increase 1AAA---->ascii add with adjustDAA---->decimal add with adjustSUB---->substractSBB---->substract with borrowDEC---->decrease 1NEC---->negativeCMP---->compareAAS---->ascii adjust on substractDAS---->decimal adjust on substractMUL---->multiplicationIMUL---->integer multiplicationAAM---->ascii adjust on multiplicationDIV---->divideIDIV---->integer divideAAD---->ascii adjust on divideCBW---->change byte to wordCWD---->change word to double wordCWDE---->change word to double word with sign toEAXCDQ---->change double word to quadrate word三、逻辑运算指令───────────────────────────────────────AND---->andOR---->orXOR---->xorNOT---->notTEST---->testSHL---->shift leftSAL---->arithmatic shift leftSHR---->shift rightSAR---->arithmatic shift rightROL---->rotate leftROR---->rotate rightRCL---->rotate left with carryRCR---->rotate right with carry四、串指令───────────────────────────────────────MOVS---->move stringCMPS---->compare stringSCAS---->scan stringLODS---->load stringSTOS---->store stringREP---->repeatREPE---->repeat when equalREPZ---->repeat when zero flagREPNE---->repeat when not equalREPNZ---->repeat when zero flagREPC---->repeat when carry flagREPNC---->repeat when not carry flag五、程序转移指令───────────────────────────────────────1>无条件转移指令(长转移)JMP---->jumpCALL---->callRET---->returnRETF---->return far2>条件转移指令(短转移,-128到+127的距离内) JAE---->jump when above or equalJNB---->jump when not belowJB---->jump when belowJNAE---->jump when not above or equalJBE---->jump when below or equalJNA---->jump when not aboveJG---->jump when greaterJNLE---->jump when not less or equalJGE---->jump when greater or equalJNL---->jump when not lessJL---->jump when lessJNGE---->jump when not greater or equalJLE---->jump when less or equalJNG---->jump when not greaterJE---->jump when equalJZ---->jump when has zero flagJNE---->jump when not equalJNZ---->jump when not has zero flagJC---->jump when has carry flagJNC---->jump when not has carry flagJNO---->jump when not has overflow flagJNP---->jump when not has parity flagJPO---->jump when parity flag is oddJNS---->jump when not has sign flagJO---->jump when has overflow flagJP---->jump when has parity flagJPE---->jump when parity flag is evenJS---->jump when has sign flag3>循环控制指令(短转移)LOOP---->loopLOOPE---->loop equalLOOPZ---->loop zeroLOOPNE---->loop not equalLOOPNZ---->loop not zeroJCXZ---->jump when CX is zeroJECXZ---->jump when ECX is zero4>中断指令INT---->interruptINTO---->overflow interruptIRET---->interrupt return5>处理器控制指令HLT---->haltWAIT---->waitESC---->escapeLOCK---->lockNOP---->no operationSTC---->set carryCLC---->clear carryCMC---->carry make changeSTD---->set directionCLD---->clear directionSTI---->set interruptCLI---->clear interrupt六、伪指令─────────────────────────────────────DW---->definw wordPROC---->procedureENDP---->end of procedureSEGMENT---->segmentASSUME---->assumeENDS---->end segmentEND---->end增量INC－Incremect 减量DNC－Decrement 短转移SJMP－Short jump 长转移LJMP－Long jump 比较转移CJNE－Compare jump not equality 绝对转移AJMP－Absolute jump 空操作NOP－No operation 交换XCH－Exchange 加法ADD－Addition 乘法MUL－Multiplication除法DIV－Division 左环移RL－Rotate left 进位左环移RLC－Rotate left carry 右环移RR－Rotate right 进位右环移RRC－Rotate right carry参考：/question/39663944.html?si=8自己想也想出来了，还用问吗？自己去想，印象会更深。