AT89C51的介绍-毕业论文外文翻译

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1、专业文献翻译题目:AT89C51的介绍姓名:学院:专业:电子信息科学与技术班级:班学号:指导教师:职称:20年月日13南京农业大学教务处制原文：TheIntroductionofAT89C51DescriptionTheAT89C51isalow-power,high-performanceCMOS8-bitmicrocomputerwith4KbytesofFlashprogrammableanderasablereadonlymemory(PEROM).ThedeviceismanufacturedusingAtmel’shigh-densitynonvo

2、latilememorytechnologyandiscompatiblewiththeindustry-standardMCS-51instructionset.Theon-chipFlashallowstheprogrammemorytobereprogrammedin-systemorbyaconventionalnonvolatilememoryprogrammer.Bycombiningaversatile8-bitCPUwithFlashonamonolithicchip,theAtmelAT89C51isapowerfulmicrocompute

3、rwhichprovidesahighly-flexibleandcost-effectivesolutiontomanyembeddedcontrolapplications.FunctioncharacteristicTheAT89C51providesthefollowingstandardfeatures:4KbytesofFlash,128bytesofRAM,32I/Olines,two16-bittimer/counters,one5vectortwo-levelinterruptarchitecture,afullduplexserialpor

4、t,one-chiposcillatorandclockcircuitry.Inaddition,theAT89C51isdesignedwithstaticlogicforoperationdowntozerofrequencyandsupportstwosoftwareselectablepowersavingmodes.TheIdleModestopstheCPUwhileallowingtheRAM,timer/counters,serialportandinterruptsystemtocontinuefunctioning.ThePower-dow

5、nModesavestheRAMcontentsbutfreezestheoscillatordisablingallotherchipfunctionsuntilthenexthardwarereset.13PinDescriptionVCC：Supplyvoltage.GND：Ground.Port0Port0isan8-bitopen-drainbi-directionalI/Oport.Asanoutputport,eachpincansinkeightTTLinputs.When1sarewrittentoport0pins,thepinscanbe

6、usedashigh-impedanceinputs.Port0mayalsobeconfiguredtobethemultiplexedaddress/databusduringaccessestoexternalprogramanddatamemory.InthismodeP0hasinternalPull-upresistor.Port0alsoreceivesthecodebytesduringFlashprogramming,andoutputsthecodebytesduringProgramverification.ExternalPull-up

7、resistorsarerequiredduringProgramverification.Port1Port1isan8-bitbi-directionalI/OportwithinternalPull-upresistors.ThePort1outputbufferscansink/sourcefourTTLinputs.When1sarewrittentoPort1pinstheyarepulledhighbytheinternalPull-upresistorsandcanbeusedasinputs.Asinputs,Port1pinsthatare

8、externallybeingpull