单片机—指令.pdf
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1、第三章全部指令数据传送类指令(包括寻址方式)说明字节数周期数MOV A,Rn MOV A,direct MOV A,Ri MOV A,#data MOV Rn,A MOV Rn,direct MOV Rn,#data MOV direct,A MOV direct,Rn MOV direct1,direct2 MOV direct,Ri MOV direct,#data MOV Ri,A MOV Ri,direct MOV Ri,#data MOV DPTR,#data16 MOVC A,A+DPTR MOVC A,A+PC MOVX A,Ri MOVX A,DPTR MOVX Ri,A 寄存
2、器内容送累加器A(Rn)直接寻址字节内容送累加器A(direct)间接 RAM 送累加器A(Ri)立即数送累加器A#data 累加器送寄存器Rn(A)直接寻址字节送寄存器Rn(direct)立即数送寄存器Rn#data 累加器送直接寻址字节directA 寄存器送直接寻址字节direct(Rn)直接寻址字节送直接寻址字节direct1(direct2)间接 RAM 送直接寻址字节direct(Ri)立即数送直接寻址字节direct#data 累加器送片内RAM(Ri)A 直接寻址字节送片内RAM(Ri)(direct)立即数送片内RAM(Ri)#data 16 位立即数送数据指针DPRT#da
3、ta16 变址寻址字节送累加器(相对 DPTR)A(A)+(DPTR)变址寻址字节送累加器(相对 PC)A(A)+(PC)片外 RAM(8 位地址)送累加器A(Ri)片外 RAM(16 位地址)送累加器A(DPTR)累加器送片外RAM(8 位地址)(Ri)A 1 2 1 2 1 2 2 2 2 3 2 3 1 2 2 3 1 1 1 1 1 1 1 1 1 1 2 1 1 2 2 2 2 1 2 1 2 2 2 2 2 2 MOVX DPTR,A PUSH direct POP direct XCH A,Rn XCH A,direct XCH A,Ri XCHD A,Ri 累加器送片外RAM(
4、16 位地址)(DPTR)A 直接寻址字节压入栈顶SP(SP)+1,(SP)(direct)栈顶弹至直接寻址字节direct(SP),SP(SP)-1 寄存器与累加器交换(A)(Rn)直接寻址字节与累加器交换(A)(direct)片内 RAM 与累加器交换(A)(Ri)片内 RAM 与累加器低4 位交换(A)3 0(Ri)30 1 2 2 1 2 1 1 2 2 2 1 1 1 1 MCS-51 传送指令示意图外部 RAM 的任何数据不能直接跳转,必须经过A。注意:PUSH ACC(累加器A 要写成 ACC)运算类指令指令助记符(包括寻址方式)说明字节数周期数ADD A,Rn 寄存器内容送累加
5、器A(A)+(Rn)1 1 ADD A,direct 直接寻址送累加器A(A)+(direct)2 1 ADD A,Ri 间接寻址 RAM 送累加器A(A)+(Ri)1 1 ADD A,#data 立即数送累加器A(A)+data 2 1 ADDC A,Rn 寄存器加到累加器(带进位)A(A)+(Rn)+CY 1 1 ADDC A,direct 直接寻址加到累加器(带进位)A(A)+(direct)+C+CY 2 1 ADDC A,Ri 间接寻址 RAM 加到累加器(带进位)A(A)+(Ri)+CY 1 1 ADDC A,#data 立即数加到累加器(带进位)A(A)+data+CY 2 1
6、SUBB A,Rn 累加器内容减去寄存器内容(带借位)A(A)-(Rn)-CY 1 1 SUBB A,direct 累加器内容减去直接寻址(带借位)A(A)-(direct)-CY 2 1 SUBB A,Ri 累加器内容减去间接寻址(带借位)A(A)-(Ri)-CY 1 1 SUBB A,#data 累加器内容减去立即数(带借位)A(A)-data-CY 2 1 INC A 累加器加 1 A(A)+1 1 1 INC Rn 寄存器加 1 Rn(Rn)+1 1 1 INC direct 直接寻址加1 direct(direct)+1 2 1 INC Ri 间接寻址 RAM 加 1(Ri)(Ri)
7、+1 1 1 INC DPTR 地址寄存器加1 DPTR DPTR+1 1 2 DEC A 累加器减 1 A(A)-1 1 1 DEC Rn 寄存器减 1 Rn(Rn)-1 1 1 DEC direct 直接寻址地址字节减1 direct(direct)-1 2 1 DEC Ri 间接寻址 RAM 减 1(Ri)(Ri)-1 1 1 MUL AB 累加器 A 和寄存器 B 相乘AB(A)*(B)1 4 DIV AB 累加器 A 除以寄存器B AB(A)/(B)1 4 DA A 对 A 进行十进制调整1 1 注意:INC A;DEC A(指令不影响任何的标志位!)MUL AB 累加器 A 和寄存
8、器 B 相乘AB(A)*(B)结果:高位字节在B 中,地位字节在A 中;如果积大于225(0FFH)则标志位OV 置位,否则 OV 清“0”DIV AB 累加器 A 除以寄存器B AB(A)/(B)结果:商的整数部分存放在累加器A 中,余数在寄存器B 中。进位位CY 和溢出标志位 OV 清“0”。如果原来B 中的内容为0(被零除),则结果 A 和 B 中内容不确定,且溢出标志位 OV 置位,在任何情况下,CY 都清“0”。文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编
9、码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D
10、7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9
11、R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2
12、Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8
13、J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7
14、Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3
15、U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10表 3-4 逻辑运算类指令指令助记符(包括寻址方式)说明字节数周期数ANL A,Rn 寄存器“与”到累加器A(A)(Rn)1 1 ANL A,direct 直接寻址“与”到累加器A(A)(direct)2 1 ANL A,Ri 间接寻址 RAM“与”到累加器A(A)(Ri)1 1 ANL A,#data 立即数“与”到累加器A(A)data
16、 2 1 ANL direct,A 累加器“与”到直接寻址direct(direct)(A)2 1 ANL direct,#data 立即数“与”到直接寻址direct(direct)data 3 2 ORL A,Rn 寄存器“或”到累加器A(A)(Rn)1 1 ORL A,direct 直接寻址“或”到累加器A(A)(direct)2 1 ORL A,Ri 间接寻址 RAM“或”到累加器A(A)(Ri)1 1 ORL A,#data 立即数“或”到累加器A(A)data 2 1 ORL direct,A 累加器“或”到直接寻址direct(direct)(A)2 1 ORL direct,#
17、data 立即数“或”到直接寻址direct(direct data)3 2 XRL A,Rn 立即数“异或”到累加器A(A)(Rn)1 1 XRL A,direct 直接寻址“异或”到累加器A(A)(direct)2 1 XRL A,Ri 间接寻址 RAM“异或”到累加器A(A)(Ri)1 1 XRL A,#data 立即数“异或”到累加器A(A)data 2 1 XRL direct,A 累加器“异或”到直接寻址direct(direct)(A)2 1 XRL direct,#data 立即数“异或”到直接寻址direct(direct)data 3 2 CLR A 累加器清零A0 1 1
18、 CPL A 累加器求反A(A)1 1 RL A 累加器循环左移A 循环左移一位1 1 RLC A 经过进位位的累加器循环左移A 带进位循环左移一位1 1 RR A 累加器循环右移A 循环右移一位1 1 RRC A 经过进位位的累加器循环右移A 带进位循环右移一位1 1 SWAP A A 半字节交换1 1 结论:与或非的作用:与 0 相与清零与 1 相或置 1 与 0 异或不变与 1 相与不变与 0 相或不变与 1 异或取反文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档
19、编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7
20、D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E
21、9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU
22、2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R
23、8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF
24、7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q
25、3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10文档编码:CL7D7K10E9R8 HU2Z7Z6R8J4 ZF7Q2Q8Q3U10表 3-5 位操作类指令指令助记符(包括寻址方式)说明字节数周期数CLR C 清进位位CY0 1 1 CLR bit清直接地址位bit0 2 1 SETB C 置进位位CY1 1 1 SETBbit置直接地址位bit1 2 1 CPL C 进位位求反CYCY_1 1 CPL bit 直接地址位求反bitbit_2 1 ANL C,bit
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