AT89C51中英文翻译

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1、外文翻译（原文）TheGeneralSituationofAT89C51TheAT89C51isalow-power,high-performanceCMOS8-bitmicrocomputerwith4KbytesofFlashProgrammableandErasableReadOnlyMemory(PEROM)and128bytesRAM.ThedeviceismanufacturedusingAtmel’shighdensitynonvolatilememorytechnologyandiscompatiblewiththeindustrystanda

2、rdMCS-51™instructionsetandpinout.Thechipcombinesaversatile8-bitCPUwithFlashonamonolithicchip;theAtmelAT89C51isapowerfulmicrocomputerwhichprovidesahighlyflexibleandcosteffectivesolutiontomanyembeddedcontrolapplications.Features:•CompatiblewithMCS-51™Products•4KBytesofIn-SystemReprogr

3、ammableFlashMemory•Endurance:1,000Write/EraseCycles•FullyStaticOperation:0Hzto24MHz•Three-LevelProgramMemoryLock•128x8-BitInternalRAM•32ProgrammableI/OLines•Two16-BitTimer/Counters•SixInterruptSources•ProgrammableSerialChannel•LowPowerIdleandPowerDownModesTheAT89C51providesthefollow

4、ingstandardfeatures:4KbytesofFlash,128bytesofRAM,32I/Olines,two16-bittimer/counters,afivevectortwo-levelinterruptarchitecture,afullduplexserialport,on-chiposcillatorandclockcircuitry.Inaddition,theAT89C51isdesignedwithstaticlogicforoperationdowntozerofrequencyandsupportstwosoftwares

5、electablepowersavingmodes.TheIdleModestopstheCPUwhileallowingtheRAM,timer/counters,serialportandinterruptsystemtocontinuefunctioning.ThePowerDownModesavesthe17外文翻译（原文）RAMcontentsbutfreezestheoscillatordisablingallotherchipfunctionsuntilthenexthardwarereset.BlockDiagramPinDescription

6、:VCCSupplyvoltage.GNDGround.Port0：Port0isan8-bitopendrainbidirectionalI/Oport.AsanoutputporteachpincansinkeightTTLinputs.When1sarewrittentoport0pins,thepinscanbeusedashighimpedanceinputs.(Sink/flow)Port0mayalsobeconfiguredtobethemultiplexedloworderaddress/databusduringaccessestoexte

7、rnalprogramanddatamemory.InthismodeP0hasinternalpull-ups.Port0alsoreceivesthecodebytesduringFlashprogramming,andoutputs17外文翻译（原文）thecodebytesduringprogramverification.Externalpull-upsarerequiredduringprogramverification.Port1：Port1isan8-bitbidirectionalI/Oportwithinternalpull-ups.Th

8、ePort1outputbuffers