单片机原理及应用（双语版·新形态版） 课件全套 孙秀娟 第1-10章 单片机概述-单片机的C语言程序设计

IntroductoryMicrocontrollerTheoryandApplicationsChapter1IntroducingMicrocontrollersMicrocontrollers微控制器，单片机TypesofComputersSupercomputers超级电脑Mainframecomputers主机电脑Minicomputers小型计算机Microcomputers微型计算机Microprocessors微处理机CraySupercomputerMicrocontrollers微控制器，单片机TypesofComputersSupercomputers超级电脑Mainframecomputers主机电脑Minicomputers小型计算机Microcomputers微型计算机Microprocessors微处理机IBMMainframecomputerMicrocontrollers微控制器，单片机TypesofComputersSupercomputers超级电脑Mainframecomputers主机电脑Minicomputers小型计算机Microcomputers微型计算机Microprocessors微信息处理机PDP8minicomputerMicrocontrollers微控制器，单片机TypesofComputersSupercomputers超级电脑Mainframecomputers主机电脑Minicomputers小型计算机Microcomputers微型计算机Microprocessors微信息处理机PCmicrocomputerTypesofComputersSupercomputers超级电脑Mainframecomputers主机电脑Minicomputers小型计算机Microcomputers微型计算机Microprocessors微信息处理机IntelmicroprocessorMicrocontrollers微控制器，单片机TypesofComputersSupercomputers超级电脑Mainframecomputers主机电脑Minicomputers小型计算机Microcomputers微型计算机Microprocessors微信息处理机IntelmicrocontrollerMicrocontrollers微控制器，单片机TypesofComputersSupercomputers超级电脑Mainframecomputers主机电脑Minicomputers小型计算机Microcomputers微型计算机Microprocessors微处理机Microcontrollers微控制器，单片机Microcomputers微型计算机Microprocessors微处理机Howaremicroprocessorsused?MicroprocessorEmbeddedSystemComputer嵌入式系统COMPUTEROperatingSystem操作系统MicroprocessorMemory存储器HarddriveUSBKeyboardMousePrinterportActuator传动装置ROMSoftwareROM里的软件Display显示器MicroprocessorSensor传感器MemoryEMBEDDEDSYSTEMEmbeddedSystemsAutomation自动化FluidControl流体控制ProcessControl过程控制AirborneSystems机载系统SubmarineCommunications潜水艇通信系统Vehiclecontrol汽车控制MedicalInstrumentation

医疗器械医用呼吸机HistoryoftheMicroprocessorCombinationalLogic组合逻辑SequentialLogic时序逻辑Bidirectionalbus双向总线Memories存储器MicroprocessorInputs输入Output输出11100HistoryoftheMicroprocessorLogiccircuits逻辑电路11100HistoryoftheMicroprocessorLogiccircuits逻辑电路CombinationalLogic组合逻辑Inputs输入Output输出CKCKCKCKQQQQInputOutputsQ3Q2Q1Q0SequentialLogic顺序逻辑I/OlinesRead/Write10Bidirectionalbus双向总线Writeto…Readfrom…Memories存储器WilliamsTube(1947)CoreMemory(1950)Memories存储器Memories存储器65963795451381798424ADDRESSBUS地址总线DATABUS数据总线Read/Write110010111111Decoder译码器Memoryarrangement11100100MSBLSBDATABUSADDRESSBUSMEMORYLOCATIONS内存单元Decoder译码器11100100MSBLSBDATABUSADDRESSBUS011111100001000Decoder译码器MEMORYLOCATIONS内存单元11100100MSBLSBDATABUSADDRESSBUS011111100001000R/W1100Decoder译码器11100100MSBLSBDATABUSADDRESSBUS011111100001000R/W1011100Decoder译码器11100100MSBLSBDATABUSADDRESSBUS011111100001000R/W1011101Decoder译码器IfAddressBushasNlinesandDataBushasDlines…NumberofMemoryLocations=2NHighestaddress=2N-1ForN=2NumberofMemoryLocations=22=4Highestaddress=22–1=3IfAddressBushasNlinesandDataBushasDlines…Highestdatavalue=2D-1ForD=3Highestdatavalue=23–1=7Unsignednumbers00000000 = 001011111111 = 25510 = 27+26+25 +24+23+22 +21+20无符号数ValueFor+usedigitsdirectlyFor-useTwo’sComplementSignbit0=+1=-10110011Signednumbers带符号数Two’sComplementNumbers补码 10011011 01100100(One’scomplement) 反码 01100101(Two’scomplement) 补码Signednumbers+0000001 = 00000001-0000001 = 11111111+0000010 = 00000010-0000100 = 11111100-2552550127-128000000000111111111111111Unsigned000000000111111110000000Signed无符号数带符号数IfAddressBushasNlinesandDataBushasDlines…ForSignedNumbersHighestdatavalue =2D-1–1Lowestdatavalue =-2D-1ForD=8Highestdatavalue =27–1 =127Lowestdatavalue =-27 =-128Pleasetrythefollowing..(Pages13-14)Question1.11.7Question1.11.8Question1.11.9Question1.11.10Question1.11.7Intel8088(1979)Intel8080(1974)Question1.11.7Question1.11.8Intel8086(1976)Intel80386(1989)Intel8080(1974)Question1.11.9Question1.11.10MICROPROCESSORMemoryAddressbusDatabusR/WStorageofprograminstructionsMICROPROCESSORAddressbusDatabusR/WStorageofprograminstructions1MemoryMICROPROCESSOR微处理器DataBus数据总线AddressBus地址总线MICROPROCESSOR微处理器RAM随机存储器ROM只读存储器INTERFACES接口WhatisthedifferencebetweenaMicroprocessorandaMicrocontroller?RAM随机存储器ROM只读存储器INTERFACES接口MICROPROCESSOR微处理器MICROCONTROLLER

单片机Interrupts中断CPU中央处理器RAMTimers定时器

UART通用异步收发机ROMClockPIA外围界面Microcontroller单片机MicroprocessorsandMicrocontrollersMicroprocessorNeedsexternalcomponentsManyinstructionsDatamovementinandoutLargenumbersMicrocontrollerFewexternalcomponentsFewinstructionsInternalmovementofbitsSmallnumbers:bitsorbytes指令位字节CompanyTypeCompatibilityINTELMCS-51series系列(8051)Compatiblewith8051与8051兼容ATMELAT89X51serieswithFlashPhilips8XC552&89C66XseriesTexasMSP430LGGMS90/97seriesCygnalC8051Fhi-speedSOCMotorola68HC11seriesNot8051compatible与8051不兼容ARMARM10&ARM11seriesMicrochipPICseriesRISCdevicesPopularMicrocontrollersIntel8051MicrochipPICIntelMCS-51series8051- ContainsROM8751- ContainsEPROM8031- ContainsnomemoryFormakingverylargenumbersFormakingsmallnumbersVerycheap,needsEPROM8951- ContainsFLASHmemory

快闪存储器WhatactionscantheMicrocontrollerdo?Takeanumberfrommemory(READ)Putanumberintomemory(WRITE)36h37h35h34h33h6565READ65WRITEMemoryCPUWhatactionscantheMicrocontrollerdo?Takeanumberfrommemory(READ)Putanumberintomemory(WRITE)Arithmeticoperations(8bit)WhatactionscantheMicrocontrollerdo?Takeanumberfrommemory(READ)Putanumberintomemory(WRITE)ArithmeticoperationsLogicaloperationsWhatactionscantheMicrocontrollerdo?Takeanumberfrommemory(READ)Putanumberintomemory(WRITE)ArithmeticoperationsLogicaloperationsDecisionsaboutprogramroute36h37h35h34h33h65Memory32h31h30h2FhPrograminstructionsinmemory5109437726930227WhatactionscantheMicrocontrollerdo?Takeanumberfrommemory(READ)Putanumberintomemory(WRITE)ArithmeticoperationsLogicaloperationsDecisionsaboutprogramrouteIntroductoryMicrocontrollerTheoryandApplicationsEndofChapter1IntroductoryMicrocontrollerTheoryandApplicationsChapter2TheHardwareoftheMCS-51MicrocontrollerOscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXD8051MicrocontrollerOscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXDToholdprogram程序16-bitaddressbus8-bitdatabus数据总线8-bitaddressbus地址总线OscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXD中央处理器中断振荡器定时器串口OscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXDMOVP3,23hOscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXDMOVP3,23hMOVP3,23hOscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXDMOVP3,23hOscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXDMOVP3,23h40239133843753663573483393210311130122913281427152616251724182319222021P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P2.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0Vcc+5vP0.0P0.1P0.2P0.3P0.4P0.5P0.6VssGNDXTAL2P3.0RXDRSTP3.1TXDP3.2INT0P3.3INT1P3.4T0P3.5T1P3.6WRP3.7RDXTAL1P0.7Vpp/EAPROG/ALEPSEN805140239133843753663573483393210311130122913281427152616251724182319222021P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P2.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0Vcc+5vP0.0P0.1P0.2P0.3P0.4P0.5P0.6VssGNDXTAL2P3.0RXDRSTP3.1TXDP3.2INT0P3.3INT1P3.4T0P3.5T1P3.6WRP3.7RDXTAL1P0.7Vpp/EAPROG/ALEPSEN8051P1P0P2P3PinAlternateDescriptionP3.0RXDSerialportreceivepinP3.1TXDSerialporttransmitpinP3.2/INT0Interrupt0inputP3.3/INT1Interrupt1inputP3.4T0Timer/Counter0inputP3.5T1Timer/Counter1inputP3.6/WRWriteEnable(externalchips)P3.7/RDReadEnable(externalchips)Port3AlternateFunctions16-bitaddressbus8-bitaddressbusOscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXD8051MicrocontrollerOscillatorInterruptCPUROMRAMTimer1Timer0I/OportsSerialExternalinterruptsCounterinputsP0P1P2P3TXDRXD8051MicrocontrollerCPU算术逻辑运算单元ArithmeticandLogicalUnitTYPESOFMEMORYARRANGEMENTVonNeumannarrangement00010C0B0A0908070605040302TYPESOFMEMORYARRANGEMENT冯·诺依曼JohnVonNeumannVonNeumannarrangement00010C0B0A0908070605040302TYPESOFMEMORYARRANGEMENT4B44016F2326A3554745DataProgramVonNeumannarrangementHarvardarrangement00010C0B0A09080706050403A02CBDTYPESOFMEMORYARRANGEMENT哈佛大学12345VonNeumannarchitectureOneaddress=onehouseBulawayo,Zimbabwe12345123451234512345HarvardarchitectureOneaddress=manyhousesFivetypesofmemoryExternalRAMExternalROM8051InternalROMSpecialFunctionRegistersInternalRAM特殊功能寄存器00hFFh80h7FhFFFF0000Datamemory8051MemoryMap内存分配数据存储器UpperdatamemoryLowerdatamemory00hFFh80h7FhFFFF0000Datamemory8051MemoryMap内存分配SpecialFunctionRegisters特殊功能寄存器00hFFh80h7FhFFFF0000DatamemorySpecialFunctionRegistersDatamemory8051MemoryMap内存分配数据存储器00hFFh80h7FhFFFF0000DatamemorySpecialFunctionRegistersDatamemoryProgramCodememory8051MemoryMap内存分配程序存储器00hFFh80h7FhFFFF0000DatamemorySpecialFunctionRegistersDatamemoryProgramCodememory8051MemoryMap内存分配InternalExternalFivetypesofmemoryExternalRAMExternalROM8051InternalROMSpecialFunctionRegistersInternalRAMDataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000InternalRAMInternalROMExternalROMExternalRAMHowdoesthe8051knowwhichtypeofmemory?DataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000MOVInternalRAMInternalROMExternalROMExternalRAMDataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000MOVInternalRAMInternalROMExternalROMExternalRAMDataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000MOV(indirect)InternalRAMInternalROMExternalROMExternalRAMDataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000MOVX(indirect)InternalRAMInternalROMExternalROMExternalRAMDataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000MOVC(indirect)InternalRAMInternalROMExternalROMExternalRAMDataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000MOVC(indirect)InternalRAMInternalROMExternalROMExternalRAMDataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000HowdoesitknowwhichCodeMemorytouse?InternalRAMInternalROMExternalROMExternalRAM40239133843753663573483393210311130122913281427152616251724182319222021P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P2.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0Vcc+5vP0.0P0.1P0.2P0.3P0.4P0.5P0.6VssGNDXTAL2P3.0RXDRSTP3.1TXDP3.2INT0P3.3INT1P3.4T0P3.5T1P3.6WRP3.7RDXTAL1P0.7Vpp/EAPROG/ALEPSEN8051EA=ExternalAccessIfLowthenExternalMemoryIfHighthenInternalMemory+5VDataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000InternalRAMInternalROMExternalROMExternalRAMEA=lowEA=highPleasetrythefollowing.. Question2.10.9 Question2.10.10 Question2.10.11 Question2.10.12 Question2.10.13Question2.10.9 Whichmemoryarrangementis foundinthe8051?HarvardarrangementACBD00hFFh80h7FhDatamemorySpecialFunctionRegisters83hQuestion2.10.10Address83h-directaddressingDirectaddressingaccessestheSFRsQuestion2.10.11EA=ExternalAccessIfLowthenExternalMemoryIfHighthenInternalMemoryIfEApinisHigh(+5V)thenInternalROMisaccessed00hFFh80h7FhDatamemorySpecialFunctionRegisters83hQuestion2.10.12Address83h-indirectaddressingIndirectaddressingaccessestheupperdatamemory00hFFh80h7FhQuestion2.10.13HighestaddressinInternalDatamemory?Highestaddress=FFh =255RegisterBanksAwaytomakeprogrammingeasierGivenamestomemorylocationsinInternalRAM00RegisterBanks07080F1017181FRegisterBank0RegisterBank1RegisterBank2RegisterBank3R0R7R0R7R0R7R0R7寄存器组RegisterBank3AddressofR6?RegisterBank0AddressofR4?WhatisaStack?TheStack堆栈inthe8051RatherlikeastackofplatesLIFOLastInFirstOutCoreMemoryStack19501.Datastorage数据存储2.Temporarystorageinaprogram暂存3.Returnaddressesforsubroutines 子程序返回地址4.Savingstatusinformation状态信息5.Interruptreturnaddresses 中断返回地址What’stheStackusedfor?BaseEndGrowingupwards基地址AddnewitemsontopBaseEndGrowingupwardsTheStackisinInternalRAM易失性存储器WhereistheStack?00hFFh80h7FhFFFF0000DatamemorySpecialFunctionRegistersDatamemoryProgramCodememory8051MemoryMap内存分配TheStackisinInternalRAM易失性存储器StackPointer栈指针StackPointer(8-bit)containstheaddressofthelastitemonthestackSTACKStackPointerStackPointerWhenthe8051isRESET–SPissetto07h07h1110000008h09h0Ah06h05h04h03hBaseDatamemorySpecialFunctionRegistersDatamemoryProgramCodememoryTheStackPointerisaSpecialFunctionRegister

WhereistheStackPointer?PUSH36hStackPointer36h37h35hXXXXPOP37hStackPointer36h37h35hXXXXBit 位Byte 字节 Bit-addressableRAM 位可寻址存储器Byte-addressableRAM 字节可寻址存储器

1101001110F00101F202F30RegisterBanksBit-addressableareaInternalDataRAMBit-addressableRAMByteBitaddressesaddBit7Bit6Bit5Bit4Bit3Bit2Bit1Bit02F2F.72F.62F.52F.42F.32F.22F.12F.02E2E.72E.62E.52E.42E.32E.22E.12E.02222.722.622.522.422.322.222.122.02121.721.621.521.421.321.221.121.02020.720.620.520.420.320.220.120.0ByteBitaddressesaddBit7Bit6Bit5Bit4Bit3Bit2Bit1Bit02F7F7E7D7C7B7A79782E7776757473727170221716151413121110210F0E0D0COB0A09082007060504030201002F.7h=7Fh20.0h=00hHowdoweknowifthenumberisabitorbyteaddress?…bythetypeofinstructionINC7Fh {Increment}SETB7Fh {Setbit}ByteBitPleasetrythefollowing..(Page28)Question2.10.14Question2.10.15Question2.10.16Question2.10.17Question2.10.18Question2.10.19Question2.10.14ForRegisterBank3whatisaddressofR4?Question2.10.15WhatishighestaddressinBank1?ForBank3,R0isat18h.ThereforeR4isat1Ch.07080F1017181F0123R0R7R0R7ForBank1,R0isat08h.ThereforeR7isat0Fh.Question2.10.16Whichbytehasbit-address7Ah?Question2.10.17Whatisbit-addressof27h.6?Question2.10.18Bit-addressofbit2inbyte21h?Question2.10.19StackpointerafteraPOPoperation?Bit-address=3EhByteis2FhBit-address=0AhDecrementedClockOscillator晶振VssGNDXTAL2XTAL1805130pF30pFExternalCrystal11.0592MHzVssGNDXTAL2XTAL18051ExternalClockSignalExternalclockClockOscillator晶振40239133843753663573483393210311130122913281427152616251724182319222021P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P2.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0Vcc+5vP0.0P0.1P0.2P0.3P0.4P0.5P0.6VssGNDXTAL2P3.0RXDRSTP3.1TXDP3.2INT0P3.3INT1P3.4T0P3.5T1P3.6WRP3.7RDXTAL1P0.7Vpp/EAPROG/ALEPSEN80518051RESETOperationThemeaningof“Cycles”ClockcycleMachinecycleClockfrequency=Oscillatorfrequency=Crystalfrequency时钟周期机器周期ForExample：WhentheCrystalFrequency=12MHZthen….8051RESETOperationVssGND+5VRESET8051Resetswitch5VToResetthe8051:-MakeRESETpinHigh(>2.5V)formorethan 2machinecycles2.MakeRESETpinLow(<2.5V)Whenbelow2.5V,microcontrollerwillresetVssGND+5VRESET0123451234567cyclesVReset8051resetsSwitchclosed8051RESETOperationVssGND+5VRESET8051Resetswitch5VPowerswitchVssGND+5VRESET0123451234567cyclesVReset8051resetsWhatdoesRESETdo?

Startstheprogramrunningat address0000h00hFFFF0000ProgramCodememory8051MemoryMap内存分配InternalExternal8051runsprogramfrom0000hWhatdoesRESETdo?

Startstheprogramrunningat address0000hPutsinitial初始值valuesin theSpecialFunctionRegisters (SFRs)WhatdoesRESETdo?SFRnameValueSFRnameValueA(ACC)00PSW00B00SBUF00DPTR00SCON00IE00SP07hIP00TCON00P0FFhTH000P1FFhTL000P2FFhTH100P3FFhTL100PCON00TMOD00ParallelInput/OutputPortsI/OportsP0P1P2P340239133843753663573483393210311130122913281427152616251724182319222021P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P2.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0Vcc+5vP0.0P0.1P0.2P0.3P0.4P0.5P0.6VssGNDXTAL2P3.0RXDRSTP3.1TXDP3.2INT0P3.3INT1P3.4T0P3.5T1P3.6WRP3.7RDXTAL1P0.7Vpp/EAPROG/ALEPSEN8051P1P0P2P3ReferenceasBITSReferenceasBYTESAlternate切换功能functionpinsSimplifiedPortCircuit接口电路P1.0+5VDataWriteenableDQReadenableToCPUSimplifiedPortCircuit(Write)P1.0+5VDQCK0TurnonCLRP1.0DataWriteenableReadenable010SimplifiedPortCircuit(Write)P1.0+5VDQCK1TurnoffSETBP1.0DataWriteenableReadenable011SimplifiedPortCircuitP1.0+5VDataWriteenableDQReadenableSink2mA0SimplifiedPortCircuitP1.0+5VDataWriteenableDQReadenableSource60mA1SimplifiedPortCircuitP1.0+5VDataWriteenableDQReadenableSink2mASource60mA灌电流拉电流LowZHighZPortCurrentCapability8051P1.48051P1.4LEDLEDGND+5V60mA2mASETBP1.4CLRP1.410SimplifiedPortCircuit(Read)P1.0+5VDQCKTurnoffDataWriteenableReadenable10SETBP1.0MOVC,P1.011READINGPORTSPutportinhi-Zstate(byoutputting1s)2.Copydatafromport40239133843753663573483393210311130122913281427152616251724182319222021P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P2.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0Vcc+5vP0.0P0.1P0.2P0.3P0.4P0.5P0.6VssGNDXTAL2P3.0RXDRSTP3.1TXDP3.2INT0P3.3INT1P3.4T0P3.5T1P3.6WRP3.7RDXTAL1P0.7Vpp/EAPROG/ALEPSEN8051P1P0P2P3Alternate切换功能functionpinsPowerConsiderationsNMOStransistor晶体管CMOStransistorPowerConsiderationsHighcurrentLowcurrentPowerModesDeviceconditionFrequencyPowersupplycurrentOperatingmode12MHz16MHz10.2mA12.6mAIdlemode12MHz16MHz3.9mA5.1mAPower-downmode50mAPowerModesDeviceconditionFrequencyPowersupplycurrentOperatingmode12MHz16MHz10.2mA12.6mAIdlemode空闲方式12MHz16MHz3.9mA5.1mAPower-downmode50mACPUturnedoffPowerModesDeviceconditionFrequencyPowersupplycurrentOperatingmode12MHz16MHz10.2mA12.6mAIdlemode空闲方式12MHz16MHz3.9mA5.1mAPower-downmode掉电方式50mAOnlymemoryonMinimalMicrocontrollerSystemMinimalMicrocontrollerSystem12LEDs发光二及管4Photocells光电阻16Resistors电阻Pleasetrythefollowing..(Page28)Question2.10.20Question2.10.22Question2.10.24Question2.10.27Question2.10.20Capacitorvaluesforexternalcrystal?Question2.10.22RSTvoltagetocausereset?Question2.10.24DatainAafterreset?Question2.10.27InactivecomponentsinIdlemode?Two30pFcapacitorsAcontains00hCPUHighfor2machinecycles,then<2.5VIntroductoryMicrocontrollerTheoryandApplicationsEndofChapter2IntroductoryMicrocontrollerTheoryandApplicationsChapter3TheMCS-51InstructionSetandSpecialFunctionRegistersLANGUAGESFORTHE8051HighLevellanguages:- C51,SDCC,SmallC,PL/M-51Assemblylanguage:- ASM51高级语言编译语言Edit(Write)AssembleRun汇编SourceCodeObjectCode源码目标码Edit(Write)AssembleRunSourceCodeObjectCodeReadablebypeopleReadableby8051MOVA,25hPOPAINCAADDA,45h100101011001100111001011SourceCodeObjectCodeMOVA,25hE525MOV4Bh,26h854B26INCA04SETB20h.3D203AssemblyLanguageProgramFormatLABEL OPCODE

OPERANDCOMMENTBEGIN: MOV A,#34h;loadaccumulator

MOV 0C6h,A标号操作码操作数注释

SJMP BEGIN

Base SymbolDecimal noneBinary bHexadecimal hNumberFormats十进制二进制十六进制00000011b = 310 = 03h00100000b = 3210 = 20h1610 = 10h =00010000b30h = 4810 =00110000b11111111b = FFh = 2551043h=01000011bInaprogram,ahexnumbercannotbeginwithaletter F0h 0F0h E4h 0E4h C7h 0C7h

FFh 0FFhADDRESSINGMODES寻址方式

00010C0B0A0908070605040302ImmediateAddressingMOV07h,#3Fh3F3F

立即Numberneedsa#(hash井)00010C0B0A0908070605040302DirectAddressingMOV09h,02h直接

FFFFNo#meansanaddressR0R70F1017181FRegisterBank0RegisterAddressingMOVA,R6AccumulatorA寄存器5A5AHouseNo12DirectIndirect间接007HouseNo15HouseNo12R0R10C0B0A0908R7R6R5R4R3R2IndirectAddressingMOV@R1,#6Eh0A6E6EIndirectaddressingcanuseR0,R1orDPTRasindirectionregister.@=at16-bitAddressingModesImmediateDirectRegisterIndirect34hR5R0AAAAR0R10C0B0A0908R7R6R5R4R3R2InherentAddressingCLR AINC ADEC AInstructionswhichdonotmakeuseofmemoryornumbersAccumulatorAddressingRegisterARegisterAcanhavetwodifferentaddressingmodesAccumulatorAddressing8-bitbusesAccumulatoraddressingADirectaddressingACCPUSHACC {Directaddressing}POPACC {Directaddressing}INCA {Accumulatoraddressing}INCACC {Directaddressing}MOV23h,ACC {Directaddressing}MOV23h,A {Accumulatoraddress}AddressingAArethesethesame?MOV23h,ACCRAMAddressingADirectaddressingMOV23h,ACCAddressingARAMDirectaddressingRAMMOV23h,ACCAddressingADirectaddressingRAMMOV23h,ACCAddressingADirectaddressingRAMMOV23h,AAddressingAAccumulatoraddressingRAMMOV23h,AAddressingAAccumulatoraddressingMOV23h,ACC 24clockcycles

MOV23h,A 12clockcycles

时钟周期BitAddressingSomeinstructionsrefertobitsSETB28.5h {Set28.5h}SETB45h {Set28.5h}CLRP0.3 {ClearP0pin3}CPL5Eh {Complementbit5Eh}Whichlocationscanbebit-addressed?BitAddressingSomeinstructionsrefertobitsInternalRAM20h-2FhAccumulatorACCRegisterBI/OPortsMostSFRs

Whichlocationscanbebit-addressed? CLRACC.40AccumulatorABitAddressing CLR P0.30AccumulatorAClearPin3ofPort0 CLRACC.4BitAddressingBitAddressing20212C2B2A29282726252423222D2E2F CLR 24.6h00 CLR P0.3AccumulatorAClearPin3ofPort0 CLRACC.4THEMCS-51INSTRUCTIONSETFulldetailsinAppendixA(Page236)AppendixAInstruction DescriptionBytesClock cyclesADD A,direct A+(direct)->A 2 12ADD A,@Ri

A+(Ri)->A 1 12INC A A+1->A 1 12INC DPTR DPTR+1->DPTR 1 24addr11 =11-bitaddressaddr16 =16-bitaddressdirect =8-bitaddressofinternalRAMorSFRRn =DataintheregistersR0toR7@Ri =IndirectaddressusingR0orR1[]: =IFconditionin[]isTRUEthenaction() =Dataattheaddressin()rel =OffsettobeaddedtocreatetheaddressTHEMCS-51INSTRUCTIONSETDataMovementInstructionsDataMovementInstructionsMOVA,#34hMOVA,47hMOVA,R3MOVA,@R034hFFhFFh34h5Fh5FhC6hC6h47hR0R3ACCA累加器Direct直接寻址@Ri间接寻址Rn寄存器#data立即数PossibleDataTransferInstructionsMOV,AACCA累加器Direct直接寻址@Ri间接寻址Rn寄存器#data立即数PossibleDataTransferInstructionsMOV,DPTR16-bit16-bitNowtrythefollowing..Question3.5.1Question3.5.5Question3.5.7Question3.5.8Question3.5.9Page47-!!!!Question3.5.1Number5toR5,8toR7MOV R5,#05hMOV R7,#08hQuestion3.5.5Write55htoPort1MOV P1,#55hQuestion3.5.7CopyfromA9hto36hAddressingmodes:36h=Direct,A9h=IndirectUseR0asindirectregisterPage20Table2.2DataMemoryDataMemCodeMemoryCodeMemorySFRs0080FFFFFFFFFF0000IndirectInternalRAMInternalROMExternalROMExternalRAMDirectMOV R0,#0A9hMOV 36h,@R0Question3.5.1Number5toR5,8toR7MOV R5,#05hMOV R7,#08hQuestion3.5.5Write55htoPort1MOV P1,#55hQuestion3.5.7CopyfromA9hto36hAddressingmodes:36h=Direct,A9h=IndirectUseR0asindirectregisterPage20Table2.2Question3.5.8

MovefromaddressinR0to48hMOV 48h,@R0MOV R6,@R1Question3.5.9

MovefromaddressinR1toR6ACCA累加器Direct直接寻址@Ri间接寻址Rn寄存器#data立即数PossibleDataTransferInstructionsQuestion3.5.8

MovefromaddressinR0to48hMOV 48h,@R0MOV R6,@R1Question3.5.9

MovefromaddressinR1toR6MOV A,@R1MOVR6,ADataMovementInstructionsMOVCA,@A+DPTRProgramCodememoryAC656h00hDPTR=C656h56h56hDataMovementInstructionsMOVXA,@DPTRDatamemoryAMOVX@DPTR,AC656h56h56hDPTR=C656hPOP37hStackPointer36h37h35hXXXXDataMovementInstructionsPUSH36hStackPointer36h37h35hXXXXDataMovementInstructionsDataMovementInstructionsXCHA,67h(Exchange)67h66h65h68h10011100A11110000MOVR7,AMOVA,67hMOV67h,R748cyclesDataMovementInstructionsXCHDA,@R