会员注册 | 登录 | 微信快捷登录 支付宝快捷登录 QQ登录 微博登录 | 帮助中心 人人文库renrendoc.com美如初恋!
站内搜索 百度文库

热门搜索: 直缝焊接机 矿井提升机 循环球式转向器图纸 机器人手爪发展史 管道机器人dwg 动平衡试验台设计

外文翻译--51系列单片机的结构和功能.DOC外文翻译--51系列单片机的结构和功能.DOC -- 5 元

宽屏显示 收藏 分享

资源预览需要最新版本的Flash Player支持。
您尚未安装或版本过低,建议您

StructureandfunctionoftheMCS51seriesStructureandfunctionoftheMCS51seriesonechipcomputerMCS51isanameofapieceofonechipcomputerserieswhichIntelCompanyproduces.Thiscompanyintroduced8topgradeonechipcomputersofMCS51seriesin1980afterintroducing8onechipcomputersofMCS48seriesin1976.Itbelongtoalotofkindsthislineofonechipcomputerthechipshave,suchas8051,8031,8751,80C51BH,80C31BH,etc.,theirbasiccomposition,basicperformanceandinstructionsystemareallthesame.8051dailyrepresentatives51serialonechipcomputer.Anonechipcomputersystemismadeupofseveralfollowingparts1Onemicroprocessorof8CPU.2AtslicedatamemoryRAM128B/256B,itusedtodepositingnotcanreading/datathatwrite,suchasresultnotmiddleofoperation,finalresultanddatawantedtoshow,etc.3ProcedurememoryROM/EPROM4KB/8KB,isusedtopreservetheprocedure,someinitialdataandforminslice.ButdoesnottakeROM/EPROMwithinsomeonechipcomputers,suchas8031,8032,80C,etc..4Four8runsidebysideI/OinterfaceP0fourP3,eachmouthcanuseasintroduction,mayuseasexportingtoo.5Twotimer/counter,eachtimer/countermaysetupandcountintheway,usedtocounttotheexternalincident,cansetupintoatimingwaytoo,andcanaccordingtocountorresultoftimingrealizethecontrolofthecomputer.6Fivecutoffcuttingoffthecontrolsystemofthesource.7OneallduplexserialI/OmouthofUARTuniversalasynchronousreceiver/transmitterUART,isitrealizeonechipcomputeroronechipcomputerandserialcommunicationofcomputertousefor.8Stretchoscillatorandclockproducecircuit,quartzcrystalfinelytuneelectriccapacityneedouter.Allowoscillationfrequencyas12nowatmost.Everytheabovementionedpartwasjoinedthroughtheinsidedatabus.Amongthem,CPUisacoreoftheonechipcomputer,itisthecontrolofthecomputerandcommandcentre,madeupofsuchpartsasarithmeticunitandcontroller,etc..Thearithmeticunitcancarryon8personsofarithmeticoperationandunitALUoflogicoperationwhileincludingone,the1storingdevicetemporarilyof8,storingdevice2temporarily,8saccumulationdeviceACC,registerBandprocedurestateregisterPSW,etc.PersonwhoaccumulateACCcountby2inputendsenteredofcheckingetc.temporarilyasoneoperationoften,comefrompersonwhostore1operationisitisitmakeoperationtogoontocounttemporarily,operationresultandloopbackACCwithanotherone.Inaddition,ACCisoftenregardedasthetransferstationofdatatransmissionon8051inside.Thesameasgeneralmicroprocessor,itisthebusiestregister.HelprememberingthatagreeingwithAexpressesintheorder.Thecontrollerincludestheprocedurecounter,theorderisdeposited,theorderdecipher,theoscillatorandtimingcircuit,etc.Theprocedurecounterismadeupofcounterof8fortwo,amountsto16.Itisabyteaddresscounteroftheprocedureinfact,thecontentisthenextIAthatwillcarriedoutinPC.Thecontentwhichchangesitcanchangethedirectionthattheprocedurecarriesout.Shakethecircuitin8051onechipcomputers,onlyneedouterquartzcrystalandfrequencytofinelytunetheelectriccapacity,itsfrequencyrangeisits12MHZof1.2MHZ.Thispulsesignal,as8051basicbeatsofworking,namelytheminimumunitoftime.8051isthesameasothercomputers,theworkinharmonyunderthecontrolofthebasicbeat,justlikeanorchestraaccordingtothebeatplaythatiscommanded.ThereareROMprocedurememory,canonlyreadandRAMin8051slicesdatamemory,canisitcanwritetwotoread,theyhaveeachindependentmemoryaddressspace,disposewaytobethesamewithgeneralmemoryofcomputer.Procedure8051memoryand8751sliceprocedurememorycapacity4KB,addressbeginfrom0000H,usedforpreservingtheprocedureandformconstant.Data805187518031ofmemorydatamemory128B,addressfalse00FH,useformiddleresulttodepositoperation,thedataarestoredtemporarilyandthedataarebufferedetc..InRAMofthis128B,thereisunitof32bytesthatcanbeappointedasthejobregister,thisandgeneralmicroprocessorisdifferent,8051sliceRAMandjobregisterrankoneformationthesametoarrangethelocation.ItisnotverythesamethatthememoryofMCS51seriesonechipcomputerandgeneralcomputerdisposesthewayinaddition.Generalcomputerforfirstaddressspace,ROMandRAMcanarrangeindifferentspacewithintherangeofthisaddressatwill,namelytheaddressesofROMandRAM,withdistributingdifferentaddressspaceinaformation.Whilevisitingthememory,correspondingandonlyanaddressMemoryunit,canROM,itcanbeRAMtoo,andbyvisitingtheordersimilarly.ThiskindofmemorystructureiscalledthestructureofPrinceton.8051memoriesaredividedintoprocedurememoryspaceanddatamemoryspaceonthephysicsstructure,therearefourmemoryspacesinallTheprocedurestoresinoneanddatamemoryspaceoutsidedatamemoryandoneinprocedurememoryspaceandoneoutsideone,thestructureformsofthiskindofproceduredeviceanddatamemoryseparatedformdatamemory,calledHarvardstructure.Butusetheanglefromusers,8051memoryaddressspaceisdividedintothreekinds1Intheslice,arrangeblocksofFFFFH,0000Hoflocation,inunisonoutsidethesliceuse16addresses.2Thedatamemoryaddressspaceoutsideoneof64KB,theaddressisarrangedfrom0000H64KBFFFFHwith16addressestootothelocation.3Datamemoryaddressspaceof256Buse8addresses.Threeabovementionedmemoryspaceaddressesoverlap,fordistinguishinganddesigningtheordersymbolofdifferentdatatransmissionintheinstructionsystemof8051CPUvisitslice,ROMorderspendMOVC,visitblockRAMorderusesMOVXoutsidetheslice,RAMorderusesMOVtovisitinslice.8051onechipcomputerhavefour8walkabreastI/Oport,callP0,P1,P2andP3.Eachportis8accuratetwowaymouths,accountsfor32pinsaltogether.EveryoneI/Olinecanbeusedasintroductionandexportedindependently.Eachportincludesalatchnamelyspecialfunctionregister,oneexportsthedriverandaintroductionbuffer.Makedatacanlatchwhenoutputting,datacanbufferwhenmakingintroduction,butfourfunctionofpasswaytheseselfsame.Expandamongthesystemofmemoryoutsidehavingslice,fourportthesemayserveasaccuratetwowaymouthofI/Oincommonuse.Expandamongthesystemofmemoryoutsidehavingslice,P2mouthseehigh8addressoffP0mouthisatwowaybus,sendtheintroductionof8lowaddressesanddata/exportintimesharingThecircuitof8051onechipcomputersandfourI/Oportsisveryingeniousindesign.FamiliarwithI/Oportlogicalcircuit,notonlyhelptouseportscorrectlyandrationally,andwillinspiretodesigningtheperipherallogicalcircuitofonechipcomputertosomeextent.Loadabilityandinterfaceofporthavecertainrequirement,becauseoutputgrade,P0ofmouthandP1endoutput,P3ofmouthgradedifferentatstructure,so,theloadabilityandinterfaceofitsdoordemandtohavenothingincommonwitheachother.P0mouthisdifferentfromothermouths,itsoutputgradedrawstheresistancesupreme.Whenusingitasthemouthincommonusetouse,outputgradeisitleakcircuittoturnon,isitisiturgeNMOSdrawtheresistanceontakingtobeouterwithitwhileinputtingtogoouttofail.Whenbeingusedasintroduction,shouldwrite1toalatchfirst.EveryonewithP0mouthcandrive8ModelLSTTLloadtoexport.P1mouthisanaccuratetwowaymouthtoo,usedasI/Oincommonuse.DifferentfromP0mouthoutputofcircuitits,drawloadresistancelinkwithpoweroninsidehave.Infact,theresistanceisthattwoeffectsareinchargeofFETandtogetherOneFETisinchargeofload,itsresistanceisregular.Anotheronecanisitleadtoworkwithcloseattwostate,makeitsPresidentresistancevaluechangeapproximate0orgroupvalueheavytwosituationvery.Whenitis0thattheresistanceisapproximate,candrawthepintothehighlevelfastWhenresistancevalueisverylarge,P1mouth,inordertohindertheintroductionstatehigh.OutputasP1mouthhighelectricityatordinarytimes,canisitdrawelectriccurrentloadtoofferoutwards,drawtheresistanceonneedntanswerandthen.Herewhentheportisusedasintroduction,mustwriteinto1tothecorrespondinglatchfirsttoo,makeFETend.ThestructureofP2somemouthissimilartoP0mouth,thereareMUXswitches.Isitsimilartomouthpartlytourge,butmouthlargeaconversioncontrolssomethanP1.P3mouthonemultifunctionalport,mouthgettingmanythanP1ithaveand3doorand4buffer.Twopartthese,makeherbesidesaccuratetwowayfunctionwithP1mouthjust,canalsousethesecondfunctionofeverypin,anddoor3functiononeswitchinfact,itdeterminestobetooutputdataoflatchtooutputsecondsignaloffunction.ActasWAt1oclock,outputQendsignalActasQAt1oclock,canoutputWlinesignal.Atthetimeofprogramming,itisthatthefirstfunctionisstillthesecondfunctionbutneednthavesoftwarethatsetupP3mouthinadvance.IthardwarenotinsideistheautomatictohavetwofunctionoutputtedwhenCPUcarriesonSFRandseeksthelocationthelocationorthebytetovisittoP3mouth/atnotlastinglining,thereareinsidehardwarelatchQs1.TheoperationprincipleofP3mouthissimilartoP1mouth.Outputgrade,P3ofmouth,P1ofP1,connectwithinsidehaveloadresistanceofdrawing,everyoneoftheycandrive4ModelLSTTLloadtooutput.Aswhileinputtingthemouth,anyTTLorNMOScircuitcandriveP1of8051onechipcomputersasP3mouthinanormalway.Becausedrawresistanceonoutputgradeofthemhave,canopenawaycollectortooordrainsourceresistanceisiturgetoopenaway,donotneedtohavetheresistanceofdrawingouter.Mouthsareallaccuratetwowaymouthstoo.Whentheconductisinput,mustwritethecorrespondingportlatchwith1first.Asto80C51onechipcomputer,portcanonlyoffermilliampereofoutputelectriccurrents,isitoutputmouthgowhenurgingoneordinarybasingoftransistortoregardas,shouldcontactaresistanceamongtheportandtransistorbase,inordertotheelectricitywhilerestrainingthehighlevelfromexportingP1P3Beingrestoredtothethroneistheoperationofinitializingofanonechipcomputer.ItsmainfunctionistoturnPCinto0000Hinitially,maketheonechipcomputerbegintoholdtheconductprocedurefromunit0000H.Exceptthattheonesthatenterthesystemareinitializednormally,asbecauseprocedureoperateitmakemistakesoroperatetherearentmistake,inordertoextricateoneselffromapredicament,needtobepressedandrestoredtothethronethekeyrestartingtoo.Itisaninputendwhichisrestoredtothethronethesignalin8051ChinaRSTpin.Restoretothethronesignalhighlevel
编号:201311171100165635    大小:37.50KB    格式:DOC    上传时间:2013-11-17
  【编辑】
5
关 键 词:
教育专区 外文翻译 精品文档 外文翻译
温馨提示:
1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
2: 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
3.本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 人人文库网仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
  人人文库网所有资源均是用户自行上传分享,仅供网友学习交流,未经上传用户书面授权,请勿作他用。
0条评论

还可以输入200字符

暂无评论,赶快抢占沙发吧。

当前资源信息

4.0
 
(2人评价)
浏览:16次
英文资料库上传于2013-11-17

官方联系方式

客服手机:13961746681   
2:不支持迅雷下载,请使用浏览器下载   
3:不支持QQ浏览器下载,请用其他浏览器   
4:下载后的文档和图纸-无水印   
5:文档经过压缩,下载后原文更清晰   

相关资源

相关资源

相关搜索

教育专区   外文翻译   精品文档   外文翻译  
关于我们 - 网站声明 - 网站地图 - 友情链接 - 网站客服客服 - 联系我们
copyright@ 2015-2017 人人文库网网站版权所有
苏ICP备12009002号-5