8051指令和执行周期列表编辑导读:基于单片机实现遥控编码器 PT2262的软件解码|基于SST89C58型单片机的远程灯控箱系统|Keil C51 开发系统基本知识2|微型低功耗大容量心电记录仪的研制（图）|飞利浦 51LPC系列单片机用于控制交流电机|基于 MCU的多机并行通信|I2C 总线的单片机 C语言实现及其应用|基于 PIC 单片机的热水控制器设计|Proteus软件调试实现的数字式指针温度计|PIC18FXX8 单片机通用同步异步收发器的编程应用|正文：8051 INSTRUCTION SET 1.Arithmetic operations:Mnemonic Byte CycADD 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 1INC Ri 1 1INC Rn 1 1INC DPTR 1 1INC direct 2 1INC direct 2 1DEC A 1 1DEC Ri 1 1DEC Rn 1 1 DEC direct 2 1MUL AB 1 4DIV AB 1 4DA A 1 12.Logical opreations:ANL A,Ri 1 1XRL A,Ri 1 1ANL A,Rn 1 1XRL A,Rn 1 1ANL A,direct 2 1XRL A,direct 2 1ANL A,#data 2 1 XRL A,#data 2 1ANL direct,A 2 1 XRL direct,A 2 1ANL direct,#data 3 2 XRL direct,#data 3 2ORL A,Ri 1 1CLR A 1 1ORL A,Rn 1 1CPL A 1 1ORL A,direct 2 1 RL A 1 1ORL A,#data 2 1 RLC A 1 1ORL direct,A 2 1 RR A 1 1ORL direct,#data 3 2 RRC A 1 1SWAP A 1 13.Data transfer:Mnemonic Byte CycMOV A,Ri 1 1 MOV DPTR,#data16 3 2MOV A,Rn 1 1 MOVC A,A+DPTR 1 2MOV A,direct 2 1 MOVC A,A+PC 1 2MOV A,#data 2 1 MOVX A,Ri 1 2MOV Ri,A 1 1MOVX A,DPTR 1 2MOV Ri,direct 2 2 MOVX Ri,A 1 2MOV Ri,#data 2 1 MOVX DPTR,A 1 2MOV Rn,A 1 1 PUSH direct 2 2MOV Rn,direct 2 2 POP direct 2 2MOV Rn,#data 2 1 XCH A,Ri 1 1MOV direct,A 2 1 XCH A,Rn 1 1MOV direct,Ri 2 2 XCH A,direct 2 1MOV direct,Rn 2 2 XCHD A,Ri 1 1MOV direct,direct 3 2MOV direct,#data 3 24.Boolean variable manipulation:Mnemonic Byte CycCLR C 1 1 ANL C,bit 2 2SETB C 1 1 ANL C,/bit 2 2CPL C 1 1 ORL C,bit 2 2