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1、毕业设计(论文)英文资料翻译学生姓名：学号：1403134332系别：机电系专业：自动化指导教师：2007年5月18日1AT89C51（8-bitMicrocontrollerwith4KBytesFlash）Features•CompatiblewithMCS-51™Products•4KBytesofIn-SystemReprogrammableFlashMemory•Endurance:1,000Write/EraseCycles•FullyStaticOperation:0Hzto12MH
2、z•256x8-bitInternalRAM•32ProgrammableI/OLines•two16-bitTimer/Counters•fiveInterruptSources•ProgrammableSerialChannel•Low-powerIdleandPower-downModesDescriptionTheAT89C51isalow-power,high-performanceCMOS8-bitmicrocomputerwith8KbytesofFlashprogrammablea
3、nderasablereadonlymemory(PEROM).ThedeviceismanufacturedusingAtmel’shigh-densitynonvolatilememorytechnologyandiscompatiblewiththeindustry-standard80C51and80C51instructionsetandpinout.Theon-chipFlashallowstheprogrammemorytobereprogrammedin-systemorbyaco
4、nventionalnonvolatilememoryprogrammer.Bycombiningaversatile8-bitCPUwithFlashonamonolithicchip,theAtmelAT89C51isapowerfulmicrocomputerwhichprovidesahighly-flexibleandcost-effectivesolutiontomanyembeddedcontrolapplications.PinConfigurationsTheAT89C51pro
5、videsthefollowingstandardfeatures:4KbytesofFlash,256bytesofRAM,32I/Olines,two16-bittimer/counters,asix-vectortwo-levelinterruptarchitecture,afull-duplexserialport,on-chiposcillator,andclockcircuitry.Inaddition,theAT89C51isdesignedwithstaticlogicforope
6、rationdowntozerofrequencyandsupportstwosoftwareselectablepowersavingmodes.TheIdleModestopstheCPUwhileallowingtheRAM,timer/counters,serialport,andinterruptsystemtocontinuefunctioning.ThePower-downmodesavestheRAMcontentsbutfreezestheoscillator,disabling
7、allotherchipfunctionsuntilthenexthardwarereset.PinDescription9VCCSupplyvoltage.GNDGround.Port0Port0isan8-bitopendrainbi-directionalI/Oport.Asanoutputport,eachpincansinkeightTTLinputs.When1sarewrittentoport0pins,thepinscanbeusedashighimpedanceinputs.Po
8、rt0canalsobeconfiguredtobethemultiplexedloworderaddress/databusduringaccessestoexternalprogramanddatamemory.Inthismode,P0hasinternalpullups.Port0alsoreceivesthecodebytesduringFlashprogrammingandoutputsthecodebytesduringprogramverification.Exte
