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1、毕业设计文献资料翻译（原文及译文）原文名称：AT89S51课题名称：编码键盘式电子密码锁14目录一、原文……………………………………………………2二、译文……………………………………………………914AT89S51Features•CompatiblewithMCS-51®Products•4KBytesofIn-SystemProgrammable(ISP)FlashMemory–Endurance:1000Write/EraseCycles•4.0Vto5.5VOperatingRange•FullyStaticOperation:0Hzto33MHz•Thre
2、e-levelProgramMemoryLock•128x8-bitInternalRAM•32ProgrammableI/OLines•Two16-bitTimer/Counters•SixInterruptSources•FullDuplexUARTSerialChannel•Low-powerIdleandPower-downModes•InterruptRecoveryfromPower-downMode•WatchdogTimer•DualDataPointer•Power-offFlag•FastProgrammingTime•FlexibleISPPr
3、ogramming(ByteandPageMode)DescriptionTheAT89S51isalow-power,high-performanceCMOS8-bitmicrocontrollerwith4Kbytesofin-systemprogrammableFlashmemory.ThedeviceismanufacturedusingAtmel’shigh-densitynonvolatilememorytechnologyandiscompatiblewiththe14industry-standard80C51instructionsetandpin
4、out.Theon-chipFlashallowstheprogrammemorytobereprogrammedin-systemorbyaconventionalnonvolatilememoryprogrammer.Bycombiningaversatile8-bitCPUwithin-systemprogrammableFlashonamonolithicchip,theAtmelAT89S51isapowerfulmicrocontrollerwhichprovidesahighly-flexibleandcost-effectivesolutiontom
5、anyembeddedcontrolapplications.TheAT89S51providesthefollowingstandardfeatures:4KbytesofFlash,128bytesofRAM,32I/Olines,Watchdogtimer,twodatapointers,two16-bittimer/counters,afivevectortwo-levelinterruptarchitecture,afullduplexserialport,on-chiposcillator,andclockcircuitry.Inaddition,the
6、AT89S51isdesignedwithstaticlogicforoperationdowntozerofrequencyandsupportstwosoftwareselectablepowersavingmodes.TheIdleModestopstheCPUwhileallowingtheRAM,timer/counters,serialport,andinterruptsystemtocontinuefunctioning.ThePower-downmodesavestheRAMcontentsbutfreezestheoscillator,disabl
7、ingallotherchipfunctionsuntilthenextexternalinterruptorhardwarereset.PinDescriptionVCCSupplyvoltage.GNDGround.Port0Port0isan8-bitopendrainbidirectionalI/Oport.Asanoutputport,eachpincansinkeightTTLinputs.When1sarewrittentoport0pins,thepinscanbeusedashigh-impedanceinputs.Port0canalsobe
