单片微型计算机汇编语言指令表.pdf

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1、1 附录 5 MCS-51 指令表MCS-51指令中所用符号和含义Rn当前工作寄存器组的8 个工作寄存器（n=07）。Ri可用于间接寻址的寄存器，只能是当前寄存器组中的2 个寄存器R0、R1（i=0，1）。direct内部RAM 中的 8 位地址（包括内部RAM 低 128 单元地址和专用寄存器单元地址）。#data 8 位常数。#data16 16 位常数。addr16 16 位目的地址，只限于在LCALL和 LJMP指令中使用。addr11 11 位目的地址，只限于在ACALL和 AJMP指令中使用。rel 相对转移指令中的8 位带符号偏移量。DPTR 数据指针，16 位寄存器，可用作16

2、 位地址寻址。SP 堆栈指针，用来保护有用数据。bit 内部RAM 或专用寄存器中的直接寻址位。A累加器。B专用寄存器，用于乘法和除法指令或暂存器。C进位标志或进位位，或布尔处理机中的累加器。间接寻址寄存器的前缀标志，如Ri，DPTR。/位操作数的前缀，表示对位操作数取反，如/bit。（）以的内容为地址的单元中的内容，X为表示指针的寄存器Ri（i=0、1）、DPTR、SP（Ri、DPTR、SP的内容均为地址）或直接地址单元。如：为了区别地址单元与立即数如30H单元与立即数30H，注释时，表述地址单元时用括号如（30H），立即数直接表示30H。$表示当前指令的地址。表示数据交换。箭头左边的内容被

3、箭头右边的内容所代替。2 十六进制代码助记符功能对标志位影响字节数周期数P OV AC CY 算术运算指令282F ADD A,Rn A+RnA 1 1 25 ADD A,direct A+(direct)A 2 1 26,27 ADD A,Ri A+(Ri)A 1 1 24 ADD A,#data A+data A 2 1 383F ADDC A,Rn A+Rn+CY A 1 1 35 ADDC A,direct A+(direct)+CY A 2 1 36,37 ADDC A,Ri A+(Ri)+CY A 1 1 34 ADDC A,#data A+data+CYA 2 1 989F SU

4、BB A,Rn A-Rn-CY A 1 1 95 SUBB A,direct A-(direct)-CY A 2 1 96,97 SUBB A,Ri A-(Ri)-CY A 1 1 94 SUBB A,#data A-data-CY A 2 1 04 INC A A+1 A X X X 1 1 080F INC Rn Rn+1 RnX X X X 1 1 05 INC direct(direct)+1(direct)X X X X 2 1 06,07 INC Ri(Ri)+1(Ri)X X X X 1 1 A3 INC DPTR DPTR+1 DPTR1 2 14 DEC A A-1A X X

5、 X 1 1 181F DEC Rn Rn-1 RnX X X X 1 1 15 DEC direct(direct)-1(direct)X X X X 2 1 16,17 DEC Ri(Ri)-1(Ri)X X X X 1 1 A4 MUL AB A*BBA X 0 1 4 84 DIV AB A/BA B X 0 1 4 D4 DA A 对 A进行十进制调整 X 1 1 逻辑运算指令585F ANL A,Rn A RnA X X X 1 1 55 ANL A,direct A(direct)A X X X 2 1 56，57 ANL A,Ri A(Ri)A X X X 1 1 54 ANL

6、 A,#data Adata A X X X 2 1 52 ANL direct,A(direct)A(direct)X X X X 2 1 53 ANL direct,#data(direct)data(direct)X X X X 3 2 484F ORL A,Rn ARn A X X X 1 1 45 ORL A,direct A(direct)A X X X 2 1 文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9

7、ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文

8、档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3

9、R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A

10、9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L1

11、0文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5

12、M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L

13、9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L103 十六进制代码助记符功能对标志位影响字节数周期数POVACC Y46,47 ORL A,Ri A(Ri)A X X X 1 1 44 ORL A,#data Adata A X X X 2 1 42 ORL direct,A(direct)A(direct)X X X X 2 1 43 ORL direct,#data(direct)data(direct)X X X X 3 2 686F XRL A,Rn ARn A X X X 1 1 65 XRL A,direct A(di

14、rect)A X X X 2 1 66,67 XRL A,Ri A(Ri)A X X X 1 1 64 XRL A,#data Adata A X X X 2 1 62 XRL direct,A(direct)A(direct)X X X X 2 1 63 XRL direct,#data(direct)data(direct)X X X X 3 2 E4 CLR A 0A X X X 1 1 F4 CPL A AAX X X X 1 1 23 RL A A循环左移一位X X X X 1 1 33 RLC A A带进位位循环左移一位 X X 1 1 03 RR A A循环右移一位X X X X

15、 1 1 13 RRC A A带进位位循环右移一位 X X 1 1 C4 SWAP A A半字节交换X X X X 1 1 数据传送指令E8EF MOV A,Rn Rn A X X X 1 1 E5 MOV A,direct(direct)A X X X 2 1 E6,E7 MOV A,Ri(Ri)A X X X 1 1 74 MOV A,#data data A X X X 2 1 F8FF MOV Rn,A ARnX X X X 1 1 A8AF MOV Rn,direct(direct)RnX X X X 2 2 787F MOV Rn,#data data RnX X X X 2 1

16、F5 MOV direct,A A(direct)X X X X 2 1 888F MOV direct,Rn direct RnX X X X 2 2 85 MOV direct1,direct2(direct2)(direct1)X X X X 3 2 86,87 MOV direct,Ri(Ri)(direct)X X X X 2 2 75 MOV direct,#data data (direct)X X X X 3 2 F6,F7 MOV Ri,A A(Ri)X X X X 1 1 A6,A7 MOV Ri,direct(direct)(Ri)X X X X 2 2 76,77 MO

17、V Ri,#data data (Ri)X X X X 2 1 90 MOV DPTR,#data16 data16 DPTRX X X X 3 2 93 MOVC A,A+DPTRA+DP TR A X X X 1 2 83 MOVC A,A+PC A+PC A X X X 1 2 文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9

18、H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:C

19、G8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV

20、6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3

21、S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码

22、:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3

23、HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 Z

24、T3S9H2C5L104 十六进制代码助记符功能对标志位影响字节数周期数P OV A C C Y E2,E3 MOVX A,Ri(Ri)AX X X 1 2 E0 MOVX A,DPTR(DPTR)AX X X 1 2 F2,F3 MOVX Ri,AA(Ri)X X X X 1 2 F0 MOVX DPTR,A A(DPTR)X X X X 1 2 C0 PUSH directSP+1 SP(direct)SPX X X X 2 2 D0 POP direct SP(direct)SP-1SPX X X X 2 2 C8CF XCH A,RnARn X X X 1 1 C5 XCH A,dir

25、ect A(direct)X X X 2 1 C6,C7 XCH A,RiA(Ri)X X X 1 1 D6,D7 XCHD A,Ri A03(Ri)03X X X 1 1 位操作指令C3 CLR C 0CYX X X 1 1 C2 CLR bit 0bitX X X 2 1 D3 SETB C1CYX X X 1 1 D2 SETB bit 1bitX X X 2 1 B3 CPL CCY CYX X X 1 1 B2 CPL bit bit bitX X X 2 1 82 ANL C,bitCY bit CYX X X 2 2 B0 ANL C,/bit CY bit CYX X X 2

26、2 72 ORL C,bitCY bit CYX X X 2 2 A0 ORL C,/bit CY bit CYX X X 2 2 A2 MOV C,bitbit CYX X X 2 1 92 MOV bit,C CY bitX X X X 2 2 控制转移指令*1 ACALL addr11PC+2 PC,SP+1 SP(PC)07（SP）,SP+1 SP(PC)815（SP）addr11(PC)100X X X X 2 2 12 LCALL addr16PC+3 PC,SP+1 SP(PC)07（SP）,SP+1 SP(PC)815（SP）addr16PC X X X X 3 2 文档编码:

27、CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 H

28、V6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT

29、3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编

30、码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3

31、 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9

32、ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文

33、档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L105 十六进制代码助记符功能对标志位影响字节数周期数P O V A C C Y 22 RETSP(PC)815,SP-1SPSP(PC)07,SP-1SPX X X X 1 2 32 RETISP(PC)815,SP-1SPSP(PC)07,SP-1SP中断返回X X X X

34、 1 2*1 AJMP addr11PC+2 PCaddr11(PC)100X X X X 2 2 02 LJMP addr16addr16PCX X X X 3 2 80 SJMP relPC+2 PC,rel PCX X X X 2 2 73 JMP A+DPTR A+DPTR PCX X X 1 2 60 JZ relA=0,rel PC A0,PC+2 PC X X X X 2 2 70 JNZ relA0,relPC A=0,PC+2 PC X X X X 2 2 40 JC relCY=1,rel PCCY=0,PC+2 PCX X X X 2 2 50 JNC relCY=0,r

35、el PCCY=1,PC+2 PCX X X X 2 2 20 JB bit,relbit=1,relPCbit=0,PC+3PCX X X X 3 2 30 JNB bit,relbit=0,relPCbit=1,PC+3 PCX X X X 3 2 10 JBC bit,relbit=1,relPC,0bitbit=0,PC+3 PCX X X X 3 2 B5 CJNE A,direct,rel A(direct),relPCA=(direct),PC+3PCX X X 3 2 B4 CJNE A,#data,rel Adata,relPC A=data,PC+3 PC X X X 3

36、2 B8BF CJNE Rn,#data,rel Rn data,relPC Rn=data,PC+3PCX X X 3 2 B6B7 CJNE Ri,#data,rel(Ri)data,relPC(Ri)=data,PC+3PC X X X 3 2 D8DF DJNZ Rn,rel Rn-10,relPCRn-1=0,PC+2 PCX X X X 2 2 D5 DJNZ direct,rel(direct)-10,relPC(direct)-1=0,PC+3 PCX X X 3 2 00 NOP 空操作，PC+1 PCX X X X 1 1 文档编码:CG8H7K5M3R3 HV6J3U6L

37、9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5

38、L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7

39、K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U

40、6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2

41、C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8

42、H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J

43、3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L106 附录 6 AT89 系列单片机1AT89 系列单片机简介AT89 系列单片机是ATMEL 公司的 8 位 Flash 单片机系列，这个系列单片机的最大特点是在片内含有Flash 存储器。因此,在应用中有着十分广泛的前途,特别是在便携式省电及特殊信息保存的仪器和系统中显得更为有用。AT89 系列单片机是以805

44、1 核构成的,它和 8051 系列单片机是兼容的，故而对于熟悉8051 的用户来说,用 ATMEL 公司的 89 系列单片机进行取代8051 的系统设计是轻而易举的事28 9 系列单片机的优点1)内部含 Flash 存储器。在系统的开发过程中可以十分容易进行程序的修改，从而大大缩短了系统的开发周期；能有效地保存一些数据信息，即使外界电源损坏也不会影响到信息的保存。2)89 系列单片机的引脚和80C51 的引脚相同。当用89 系列单片机取代80C51 时，不管采用 40 引脚或是44 引脚的产品，只要用相同引脚的89 系列单片机取代80C51 的单片机即可以直接进行代换。3)静态时钟方式。89

45、系列单片机采用静态时钟方式，节省电能，这对于降低便携式产品的功耗十分有用。4)错误编程亦无废品产生。一般的OTP 产品一旦错误编程就成了废品，而89 系列单片机内部采用了Flash 存储器，所以错误编程之后仍可以重新编程直到正确为止故不存在废品。5)可进行反复系统试验。用89 系列单片机设计的系统可以反复进行系统试验，每次试验可以编入不同的程序修改使系统不断能追随用户的最新要求。389 系列单片机的内部结构89 系列单片机的内部结构和80C51 相近，主要含有如下一些部件：(1)8031 CPU (6)片内 RAM (2)振荡电路(7)并行 I O 接口(3)总线控制部件(8)定时器(4)中断

46、控制部件(9)串行 I O 接口(5)片内 Flash 存储器(10)片内 EEPROM 89 系列单片机中AT89C1051 的 Flash 存储器容量最小只有1 K，储器容量最大有20K。这个系列中结构最简单的是AT89C1051，它内部不含串行接口；最复杂的是AT89S8252 内部含标准的串行接口、一个串行外围接口SPI，Watchdog 定时器，双数据指针，EEPROM 电源下降的中断恢复等功能和部件。89 系列单片机目前有多种型号分别为AT89C1051、AT89C2051、AT89C4051、AT89C51 AT89LV51、AT89C52、AT89LV52、AT89S8252、

47、AT89LS8252、AT89C55、AT89LV55、AT89S53 AT89LS53、AT89S4D12。其中 AT89LV51、AT89LV52 和 AT89LV55 分别是 AT89C51、AT89C52 和AT89C55 的低电压产品，最低电压可以低至2.7 V。而 AT89C1051 和 AT89C2051 则是低档型低电压产品，它们仅有20 个引脚最低电压仅为2.7 V。文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6

48、L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C

49、5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H

50、7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3U6L9A9 ZT3S9H2C5L10文档编码:CG8H7K5M3R3 HV6J3