资源描述：
《毕业设计英文文献翻译.pdf》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、EnglishliteratureAT89C51isaflickering4KbytescaneraseProgrammableread-onlyMemory(FPEROMErasableProgrammableRead----FalshwithMemoryofhowlowvoltage,high)CMOS8amicroprocessorchip,called.AT89C2051isaflickering2Kbyteswithaprogrammableread-onlymemorycanbeerasedthe
2、microcontroller.Thechipcaneraseread-onlymemorycanbeerased100timesrepeatedly.ThisdeviceadoptsATMELhigh-densitynon-volatilestoragetechnology,manufacturingandindustrialstandardMCS-51instructionsetandoutputtubeJiaoXiangcompatible.DuetotheCPUandmulti-function8-b
3、itwillflashmemorychips,inasingleATMELofAT89C51isakindofeffectivemicrocontroller,itisakindofAT89C2051streamlinedversion.FormanyAT89CMCUembeddedcontrolsystemprovidesahighflexibilityandinexpensivesolutions.1Majorfeatures:.CompatiblewithMCS,51-4Kbytes,programma
4、bleflashmemoryLife:1000write/wipecycleDataretentiontime:10yearsThestaticjob,0Hz:24Hz-3,aprogrammemorylock128*8bits,internalRAM32programmable,I/O16,twotimers/countersInterruptsource,5programmableserialpassageTheidle,lowpowerconsumptionandpowermodeWithintheos
5、cillatorandclock,slice2tubefoot:TheVCC:powersupplyvoltage.GND:grounding.Mouth:forP0P0mouthopenatwo-wayleakagelevelI/O,eachfootcanabsorb8TTLgatecurrent.WhenthepipemouthP1firstwrite1foot,isdefinedasthehighimpedanceinput.ExternalprogramscanbeusedforP0datastora
6、ge,itcanbedefinedastheeighthdata/address.Inprogramming,FIASHP0mouthastheoriginalcode,whenFIASHinputandoutputtocalibratetheoriginalcode,P0P0externalmustbepulled.P1:P1mouth:isaninternalprovidestheresistanceoftheeighttwo-wayI/Obuffers,P1mouthcanreceive4TTLgate
7、currentoutput.TheonefootP1,internalandcanbeusedforhighinput,P1mouthbyexternaldownforlowlevels,willoutputcurrent,thisisduetotheinternal.Inprogrammingandcalibration,FLASHP1mouthaseighthaddressreceives.1EnglishliteratureP2:foraninternalonmouthP2pull-upresistor
8、sofeighttwo-wayI/ObuffersandP2mouthcanreceive,output4TTLdoormouth,whenthecurrentiswrittenP2"1",thetubefeetwerepulledontheinternalresistanceandpullasinput.Andso,astheinputoftubefeetwereP2externaldown,wi
