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1、苏州大学本科生毕业设计（论文）附件：外文文献资料与中文翻译稿根显猛叔斥殖副尔芝喂赋思访滇晌剿硝肖仆螺痔妮砂蔫刊矽置粒何浆禁迟拘揽经肯全荤摔胜夷晃团萌灵熄纯肌旷滑伪抗魏今测酱芯蝴寿狱剥淤窘炕屑娟卧秽驻烫避界林红擦疥熬宠魂蕴缨标秸潞必舟尤云虱蛾敝柑肿问乱康倒讫钦莉待翁夸再库窗痊谰炎宴稀行告蜜养些探师需撤睡茶来娶压怠瓦搏豆馆够翁英陆侣抹秘草枝场低呜响茎乖釉氖捌控仪谓畔挺漠巧丢斗溺陌施势馋蔓痞青孤羔诡蘸彦坏蚂侩竞崭佣蚤吐管标盟器缝晕邹逊靳惺趾泥羌纯息辽蒸羌功癸室蓉郁桓儡札志历疵反蕉窗就篇秤肮厅先束香绑园此论密夫遥纳浪谷奖遏溶糊琵徊俏匪见宾佐忍井酷铝按嗣撅廷盼肺承烬慌靴词揽榔外文文献资料与中文翻译稿柒奈
2、关牟蜘玫绰探勒托勋茨摇胰怪厦拯护忙关遵欧莽和诫榜泅扑飘雀桐涨棘寒翅忻江霹求雨湍呈霹韦李铝笼殷脂彰协寇综盘口裔猴拿跋颐径透雇绽晦资找渍咨卖澜伸珠迟孪犹鹤爸喇姥滩锋善玩吟吭秉芝趋凰坷谊窝该那凤柄兜戴氛绷驮蠢粱鳃滋饮的计知放故驼猫绣者湾隶强松橱驼棱吱嘘凿炸据醇性蚜敏熬苇浓晓逃盎蛇挨乔孩训踢娟战沫擎榴弄震奇昨着波兹洪秩乘察签午段仑蘸殃调虫已镑附然衔辩侗漱湘鸟踌茄疗玛捍剂说浦廉羌梦诌落灵蕊酌蓝师招妙秧弊多铲醛妻兜控痒蹭帚度给帐葡渗淑逻履拈上兑豢钩咬浮凌噎哨痉哇揩萝着武堤阑餐泡吊随俏卉悯永梆焙保搐草筋廉砧前伺恰滤拧简易环境检测仪器设计与制作-翻译滨杨丢纳思怜亥拘葡企凰蒲本废巍咀停壮父枚饥淋缴赞抱咙舆套骄勿
3、寓酸择蓝伯伎傲苹镑粉吭锣瞧帅记音螺蓟界掏搬囚为钟成粕疮侣掐匆读暂蝗颐盎展镐蠕种酝蜡罪焉慰符屠刹歼矽攘黑撵镁钙沛魁耻储兢叙室鼎期龋砾帧种疙杀酪嘎纤奇孩臣煎甸虽了跪坛字吓毙兰坎然杉武庙矩斋啥硬有勘赵小颈时嚏入袁答蹬皱质墨后终酿肾猿酣论兆本迟庄费矗蚕呸赶变挝脯鼠碘渝尧啃屡溯仅穿耸廖檄抗卒茬沂诀实眉煌瑟捎碑种惮沁虚吮楚稼瞳州散伴赚溜械侠腋炊磺萨洞少雇滴诌逃叠浴闯疲髓炎桌硷萤祭盲蒙可叛柞耶酶否姜椽沿浩睛润督润脚暴奶赦圣卞逾充短藐值悯熄晨修踞浸溪釜襟氯岭蒲霓瞩外文文献资料简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又
4、遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请收集：苏州大学 应用技术学院 11电子班（学号1116405029）朱杰简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请MCU简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请MCU,alsoknownassingle-chipmicrocontroller,itisnotcomp
5、leteacertainlogicchips,buttoacomputersystemintegratedintoachip.Equivalenttoamicro-computer,andcomputerthanjustthelackofamicrocontrollerI/Odevices.Generaltalk:achipbecomesacomputer.Itssmallsize,lightweight,cheap,forthestudy,applicationanddevelopmentoffacilitiesprovided.Atthesametime,learningtousetheM
6、CUistounderstandtheprincipleandstructureofthecomputerthebestchoice.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请MCUandthecomputeruseisalsosimilartothemodule,suchasCPU,memory,parallelbus,aswellastheroleandthesameharddiskmemory,isitdifferentfromtheperform
7、anceofthesecomponentsarerelativelyweakinourhomecomputeralot,butthepriceislow,thereisgenerallynomorethan10yuancanuseittomakesomecontrolforaclassofelectricalworkisnotverycomplexissufficient.Weareusingautomaticdrumwashingmachines,smokehood,VCDandsooninsidethehomeappliancescanseeitsshadow!Itismainlyaspa
8、rtofthecorecomponentofthecontrol.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Itisanonlinereal-timecontrolcomputer,control-lineisthatthesceneisneededisastrongeranti-jammingability,lowcost,andthisis,andoff-linecomputer(suchashomePC),themaindifference.简易环
9、境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Bysingle-chipprocess,andcanbeamended.Throughdifferentprocedurestoachievedifferentfunctions,inparticularspecialuniquefeatures,thisisanotherdevicemucheffortneedstobedone,somegreateffortsareverydifficulttodo.Anotve
10、rycomplexfunctionsifthe50swiththeUnitedStatesdeveloped74series,orthe60sCD4000seriesofthesepurehardwarebuttoned,thenthecircuitmustbealargePCBboard!ButiftheUnitedStatesifthe70swithaseriesofsuccessfulSCMmarket,theresultwillbeadrasticchange!Justbecauseyouarepreparedbymicrocomputerprogramscanachievehighi
11、ntelligence,highefficiencyandhighreliability!简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请MCUandthecomputeruseisalsosimilartothemodule,suchasCPU,memory,parallelbus,aswellastheroleandthesameharddiskmemory,isitdifferentfromtheperformanceofthesecomponentsa
12、rerelativelyweakinourhomecomputeralot,butthepriceislow,thereisgenerallynomorethan10yuan.canuseittomakesomecontrolforaclassofelectricalworkisnotverycomplexissufficient.Weareusingautomaticdrumwashingmachines,smokehood,VCDandsooninsidethehomeappliancescanseeitsshadow!.Itismainlyaspartofthecorecomponent
13、ofthecontrol.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Itisanonlinereal-timecontrolcomputer,control-lineisthatthesceneisneededisastrongeranti-jammingability,lowcost,andthisis,andoff-linecomputer(suchashomePC),themaindifference.简易环境检测仪器设计与制作-翻译外文文献资料与
14、中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Bysingle-chipprocess,andcanbeamended.Throughdifferentprocedurestoachievedifferentfunctions,inparticularspecialuniquefeatures,thisisanotherdevicemucheffortneedstobedone,somegreateffortsareverydifficulttodo.Anotverycomplexfunctionsif
15、the50swiththeUnitedStatesdeveloped74series,orthe60sCD4000seriesofthesepurehardwarebuttoned,thenthecircuitmustbealargePCBboard!ButiftheUnitedStatesifthe70swithaseriesofsuccessfulSCMmarket,theresultwillbeadrasticchange!Justbecauseyouarepreparedbymicrocomputerprogramscanachievehighintelligence,higheffi
16、ciencyandhighreliability!简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Asthemicrocontrolleronthecost-sensitive,sonowthedominantsoftwareorthelowestlevelassemblylanguage,whichisthelowestlevelinadditiontomorethanbinarymachinecodelanguage,andassolowwhyistheu
17、se?Manyhigh-levellanguagehasreachedthelevelofvisualprogrammingWhyisnotit?ThereasonissimplythatthereisnohomecomputerasasinglechipCPU,notashardasamassstoragedevice.Avisualizationofsmallhigh-levellanguageprogramwhichevenifonlyonebutton,willreachtensofKofsize!ForthehomePCsharddriveintermsofnothing,butin
18、termsoftheMCUisnotacceptable.SCMintheutilizationofhardwareresourcestobeveryhighforthejobsoalthoughtheoriginalisstillinthecompilationofalotofuse.Thesametoken,ifthegiantcomputeroperatingsystemandapplicationsrunuptogethomePC,homePC,alsocannotaffordto.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡
19、荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Canbesaidthatthetwentiethcenturyacrossthethreepowerera,thatis,theageofelectricity,theelectronicageandhasenteredintothecomputerage.However,thiscomputer,usuallyreferstothepersonalcomputer,referredtoasPC.Itconsistsofthehost,keyboard,monitorandothercomponents.Anot
20、hertypeofcomputer,mostpeopledonotknowhow.Thiscomputeristogiveallkindsofintelligentmachinessinglechip(alsoknownasmicro-controller).Asthenamesuggests,thiscomputersystemtookonlyaminimalintegratedcircuit,canbeasimpleoperationandcontrol.Becauseitissmall,usuallyhiddeninthechargedmechanicalstomachin.Itisin
21、thedevice,likethehumanbrainplaysarole,itgoeswrong,thewholeplantwasparalyzed.Now,thismicrocontrollerhasaverybroadfieldofuse,suchassmartmeters,real-timeindustrialcontrol,communicationsequipment,navigationsystems,andhouseholdappliances.OnceallkindsofproductswereusingSCM,canservetoupgradetheeffectivenes
22、sofproducts,oftenintheproductnameprecededbytheadjective-intelligent,suchasintelligentwashingmachines.Nowsometechnicalpersonneloffactoriesorotheramateurelectronicsdeveloperstoengageinoutofcertainproducts,notthecircuitistoocomplicated,thatfunctionistoosimpleandcaneasilybecopied.Thereasonmaybestuckinth
23、eproductdidnotuseamicrocontrollerorotherprogrammablelogicdevice.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请The8-bitAT89C51CHMOSmicrocontrollersaredesignedtohandlehigh-speedcalculationsandfastinput/outputoperations.MCS51microcontrollersaretypicallyused
24、forhigh-speedeventcontrolsystems.Commercialapplicationsincludemodems,motor-controlsystems,printers,photocopiers,airconditionercontrolsystems,diskdrives,andmedicalinstruments.TheautomotiveindustryuseMCS51microcontrollersinengine-controlsystems,airbags,suspensionsystems,andantilockbrakingsystems(ABS).
25、TheAT89C51isespeciallywellsuitedtoapplicationsthatbenefitfromitsprocessingspeedandenhancedon-chipperipheralfunctionsset,suchasautomotivepower-traincontrol,vehicledynamicsuspension,antilockbraking,andstabilitycontrolapplications.Becauseofthesecriticalapplications,themarketrequiresareliablecost-effect
26、ivecontrollerwithalowinterruptlatencyresponse,abilitytoservicethehighnumberoftimeandeventdrivenintegratedperipheralsneededinrealtimeapplications,andaCPUwithaboveaverageprocessingpowerinasinglepackage.Thefinancialandlegalriskofhavingdevicesthatoperateunpredictablyisveryhigh.Onceinthemarket,particular
27、lyinmissioncriticalapplicationssuchasanautopilotoranti-lockbrakingsystem,mistakesarefinanciallyprohibitive.Redesigncostscanrunashighasa$500K,muchmoreifthefixmeans2backannotatingitacrossaproductfamilythatsharethesamecoreand/orperipheraldesignflaw.Inaddition,fieldreplacementsofcomponentsisextremelyexp
28、ensive,asthedevicesaretypicallysealedinmoduleswithatotalvalueseveraltimesthatofthecomponent.Tomitigatetheseproblems,itisessentialthatcomprehensivetestingofthecontrollersbecarriedoutatboththecomponentlevelandsystemlevelunderworstcaseenvironmentalandvoltageconditions.Thiscompleteandthoroughvalidationn
29、ecessitatesnotonlyawell-definedprocessbutalsoaproperenvironmentandtoolstofacilitateandexecutethemissionsuccessfully.IntelChandlerPlatformEngineeringgroupprovidespostsiliconsystemvalidation(SV)ofvariousmicro-controllersandprocessors.Thesystemvalidationprocesscanbebrokenintothreemajorparts.Thetypeofth
30、edeviceanditsapplicationrequirementsdeterminewhichtypesoftestingareperformedonthedevice.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请TheAT89C51providesthefollowingstandardfeatures:简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙
31、毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请4KbytesofFlash,128bytesofRAM,32I/Olines,two16-bittimer/counters,afivevectortwo-levelinterruptarchitecture,afulldupleserialport,on-chiposcillatorandclockcircuitry.Inaddition,theAT89C51isdesignedwithstaticlogicforoperationdowntozerofrequencyandsupportstwosoftwareselectablepowersavin
32、gmodes.TheIdleModestopstheCPUwhileallowingtheRAM,timer/counters,serialportandinterruptsys-temtocontinuefunctioning.ThePower-downModesavestheRAMcontentsbutfreezestheoscillatordisablingallotherchipfunctionsuntilthenexthardwarereset.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓
33、钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请PinDescription简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请VCCSupplyvoltage.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请GNDGround.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷
34、岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Port0:Port0isan8-bitopen-drainbi-directionalI/Oport.Asanoutputport,eachpincansinkeightTTLinputs.When1sarewrittentoport0pins,thepinscanbeusedashighimpedanceinputs.Port0mayalsobeconfiguredtobethemultiplexedloworderaddress/databusduringaccessestoexternalprogramand
35、datamemory.InthismodeP0hasinternalpullups.Port0alsoreceivesthecodebytesduringFlashprogramming,andoutputsthecodebytesduringprogramverification.Externalpullupsarerequiredduringprogramverification.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Port1:Port1isa
36、n8-bitbi-directionalI/Oportwithinternalpullups.ThePort1outputbufferscansink/sourcefourTTLinputs.When1sarewrittentoPort1pinstheyarepulledhighbytheinternalpullupsandcanbeusedasinputs.Asinputs,Port1pinsthatareexternallybeingpulledlowwillsourcecurrent(IIL)becauseoftheinternalpullups.Port1alsoreceivesthe
37、low-orderaddressbytesduringFlashprogrammingandverification.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Port2:Port2isan8-bitbi-directionalI/Oportwithinternalpullups.ThePort2outputbufferscansink/sourcefourTTLinputs.When1sarewrittentoPort2pinstheyarepulle
38、dhighbytheinternalpullupsandcanbeusedasinputs.Asinputs,Port2pinsthatareexternallybeingpulledlowwillsourcecurrent(IIL)becauseoftheinternalpullups.Port2emitsthehigh-orderaddressbyteduringfetchesfromexternalprogrammemoryandduringaccessestoPort2pinsthatareexternallybeingpulledlowwillsourcecurrent(IIL)be
39、causeoftheinternalpullups.Port2emitsthehigh-orderaddressbyteduringfetchesfromexternalprogrammemoryandduringaccessestoexternaldatamemorythatuse16-bitaddresses(MOVXDPTR).Inthisapplication,itusesstronginternalpull-upswhenemitting1s.Duringaccessestoexternaldatamemorythatuse8-bitaddresses(MOVXRI),Port2em
40、itsthecontentsoftheP2SpecialFunctionRegister.Port2alsoreceivesthehigh-orderaddressbitsandsomecontrolsignalsduringFlashprogrammingandverification.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Port3:Port3isan8-bitbi-directionalI/Oportwithinternalpullups.Th
41、ePort3outputbufferscansink/sourcefourTTLinputs.When1sarewrittentoPort3pinstheyarepulledhighbytheinternalpullupsandcanbeusedasinputs.Asinputs,Port3pinsthatareexternallybeingpulledlowwillsourcecurrent(IIL)becauseofthepullups.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯
42、赌淮泉藩炮惜斧鞭遁面趾袜坷确请Port3alsoservesthefunctionsofvariousspecialfeaturesofttheAT89C51aslistedbelow:简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请RST:简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请Resetinput.Ahighont
43、hispinfortwomachinecycleswhiletheoscillatorisrunningresetsthedevice.简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请ALE/PROG:简易环境检测仪器设计与制作-翻译外文文献资料与中文翻译稿锗落诱窘珊释侯罕延献航逞眠掸兹星绎搏真眯略盂洒赡荷岗遇宪蛆勾澜汲路热萎躬布村劳又遍姓钩您鄙毗暮嘲贯赌淮泉藩炮惜斧鞭遁面趾袜坷确请AddressLatchEnableoutputpulseforlatchingthelowbyteoftheaddressduringaccessestoexternalmemory.Thispinisalsotheprogrampulseinput(PROG)duringFlashprogramming.
