51單片機(jī)匯編指令集(附記憶方法)

1、05151單片機(jī)匯編指令集單片機(jī)匯編指令集一、數(shù)據(jù)傳送類指令（一、數(shù)據(jù)傳送類指令（7種助記符）種助記符）MOV（英文為Move）：對(duì)內(nèi)部數(shù)據(jù)寄存器RAM和特殊功能寄存器SFR的數(shù)據(jù)進(jìn)行傳送；MOVC（MoveCode）讀取程序存儲(chǔ)器數(shù)據(jù)表格的數(shù)據(jù)傳送；MOVX(MoveExternalRAM)對(duì)外部RAM的數(shù)據(jù)傳送；XCH(Exchange)字節(jié)交換；XCHD(ExchangelowderDigit)低半字節(jié)交換；PUSH(Pushon

2、toStack)入棧；POP(PopfromStack)出棧；二、算術(shù)運(yùn)算類指令（二、算術(shù)運(yùn)算類指令（8種助記符）種助記符）ADD(Addition)加法；ADDC(AddwithCarry)帶進(jìn)位加法；SUBB(SubtractwithBrow)帶借位減法；DA(DecimalAdjust)十進(jìn)制調(diào)整；INC(Increment)加1；DEC(Decrement)減1；MUL(Multiplication、Multiply)乘法；DI

3、V(Division、Divide)除法；三、邏輯運(yùn)算類指令（三、邏輯運(yùn)算類指令（1010種助記符）種助記符）ANL(Logic)邏輯與；L(Logic)邏輯或；XRL(ExclusiveLogic)邏輯異或；CLR(Clear)清零；CPL(Complement)取反；RL(Rotateleft)循環(huán)左移；RLC(RotateLeftthroughttheCarryflag)帶進(jìn)位循環(huán)左移；RR(RotateRight)循環(huán)右移；RR

4、C(RotateRightthroughttheCarryflag)帶進(jìn)位循環(huán)右移；SWAP(Swap)低4位與高4位交換；四、控制轉(zhuǎn)移類指令（四、控制轉(zhuǎn)移類指令（1717種助記符）種助記符）ACALL（AbsolutesubroutineCall）子程序絕對(duì)調(diào)用；LCALL（LongsubroutineCall）子程序長(zhǎng)調(diào)用；RET（Returnfromsubroutine）子程序返回；RETI（ReturnfromInterrupt

5、ion）中斷返回；SJMP（ShtJump）短轉(zhuǎn)移；AJMP（AbsoluteJump）絕對(duì)轉(zhuǎn)移；LJMP（LongJump）長(zhǎng)轉(zhuǎn)移；CJNE(CompareJumpifNotEqual)比較不相等則轉(zhuǎn)移；2指令集（集（111111條）條）助記符說(shuō)明說(shuō)明字節(jié)字節(jié)周期周期代碼1.1.數(shù)據(jù)傳送指令（數(shù)據(jù)傳送指令（3030條）條）MOVARn寄存器送A11E8EFMOVAdata直接字節(jié)送A21E5MOVA@Ri間接RAM送A11E6E7MO

6、VA#data立接數(shù)送A2174MOVRnAA送寄存器11F8FFMOVRndata直接數(shù)送寄存器22A8AFMOVRn#data立即數(shù)送寄存器21787FMOVdataAA送直接字節(jié)21F5MOVdataRn寄存器送直接字節(jié)2188—8FMOVdatadata直接字節(jié)送直接字節(jié)3285MOVdata@Ri間接Rn送直接字節(jié)228687MOVdata#data立即數(shù)送直接字節(jié)3275MOV@RiAA送間接Rn12F6F7MOV@Rida

7、ta直接字節(jié)送間接Rn11A6A7MOV@Ri#data立即數(shù)送間接Rn227677MOVDPTR#data1616位常數(shù)送數(shù)據(jù)指針3190MOVCbit直接位送進(jìn)位位21A2MOVbitC進(jìn)位位送直接位2292MOVCA@ADPTRADPTR尋址程序存貯字節(jié)送A3293MOVCA@APCAPC尋址程序存貯字節(jié)送A1283MOVXA@Ri外部數(shù)據(jù)送A（8位地址）12E2E3MOVXA@DPTR外部數(shù)據(jù)送A（16位地址）12E0MOVX@

8、RiAA送外部數(shù)據(jù)（8位地址）12F2F3MOVX@DPTRAA送外部數(shù)據(jù)（16位地址）12F0PUSHdata直接字節(jié)進(jìn)棧道，SP加122C0POPdata直接字節(jié)出棧，SP減122D0XCHARn寄存器與A交換11C8—CFXCHAdata直接字節(jié)與A交換21C5XCHA@Ri間接Rn與A交換11C6C7XCHDA@Ri間接Rn與A低半字節(jié)交換11D6D72.2.邏輯運(yùn)算指令（邏輯運(yùn)算指令（3535條）條）ANLARn寄存器與到A1