单片机的发展毕业论文外文翻译Word文件下载.docx

单片机的发展毕业论文外文翻译Word文件下载.docx

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（1）thelate70sinthemid-80

Thetechnologyduringthisperiodwasmainlythedevelopmentofsimulationsystems,nowisnothightechnology,theuserrequestisnothigh.

（2）thelate80'

sduringthelate-90

ThemainuseofthisperiodwithanemulationfunctionWinbondchipproduction,thetechnologyiscalledBondout.Usingthischiptogreatlysimplifythedesignofemulator,sothestandardofdomesticemulatorwithalargeincreasecanbelargelyoccupiedbytheuserresources.

Simulationperformanceisduetotheincreaseindomesticproductionintheemulatornearly10yearsnoprogresshasbeenproducedusingthismodel.Althoughindividualcompanieshavealsotriedothertechniquestoimprovethesimulationofthestandard,forexample,HOOKStechnology,butbecauseoftheirtechnicallimitationsdidnotsucceed.InsteadabroadearliersimulatortechnologyusedHOOKS,HOOKSattheinitialstageduetothecomplexityofthetechnologyitself,simulationperformanceandpriceasthedomesticuseofthesimulatorBondout.

WiththedevelopmentofICtechnology,thedomesticproductionHOOKStechnologyisripe,butseveralmajordomesticmanufacturersalsoBondouttechnologiesintoxicated.

（3）After2000year

Chinain2000emulatorperiodchangesinthemarket,thelargest,themoststrikingchangeistheWinbondW78958chipsimulationoftheproduction.

WinbondW78958chipduringthedesignstage,theinternalfunctionsofthesimulationonlytotheproductionsimulatortosimulatormanufacturersinordertobetterpromotetheW78958.Afterseveralyearsofchange,however,W78958simulatorevolvedintotheuseofasimulationoftheASICratherthanusingthestandardchip,thescopeofuseislimitedtodomesticand20,000ayearlessthantheamountthecompanyalsocontributedtotheWinbondAfterenteringin2002announcedthatitwouldstopproductionofthechip.

W78958production,thedomesticmanufacturerssimulatorinaveryembarrassingsituation.W78958useathomeasaresultofnearly10years,thedomesticuserbaseisverylarge,theseuserswillnotbeabletoreceivecontinuedsupport,especiallymaintenance.Inaddition,thedomesticfocusintheW78958onthetechnicalworkdonecannotberenewedandimproved,manypeopleintheindustrythattheindustrywillfaceasimulatortosetuporre-shuffleofthesituation.

HOOKSsimulatortechnologyisnodoubtW78958manufacturersafterthelossofalternatives,buttheabsenceoflong-termfollow-upandattention,nottheshorttermthemajorityofmanufacturersofcomplexHOOKSmaturetechnologyproducts.Expertsbelievethattheoverallsimulatormanufacturersintransitionmayneed2-3yearsofthecycle,andthereisconsiderablesimulatormanufacturerswillbeeliminated,themarketwillhavemainlyconcentratedinafewsimulatormanufacturers.

Chipmanufacturersasmoreandmoreresourcesgettingstrongerandstronger,withchiptochipcompatiblesimulationsimulationmodel,thereisincompletecoverageofresources（suchasadditionalports,additionalexternalinterrupt）,addressdifferentdistribution（suchastheP4I）,tooperateindifferentways（suchasEXTRAM,WTD）andothershortcomings.SimulationwithadedicatedchiptochiporPhilipssimulationofmorethan20manufacturersmorethan400kindsofchips,thefirstsimulationrequiredmoreandmore,sothere'

sanewgenerationofsimulatortechnology.

Butanewgenerationofpatentedtechnologymakesthesimulatorthereisnoeconomicpowercannotaffordtobuythebeginners.

Second,thedevelopmenttrendofsingle-chip

Itcanbesaidnowisasingle-chipopinionsoftheperiod,theworld'

smajorchipmanufacturingcompanieshaveintroducedtheirownsingle-chip,fromthe8,16-32,justtonameafew,everything,itiscompatiblewithmainstreamC51seriesof,therearenotcompatible,buttheyowneachotherintoeachother,forSCMapplicationsworldwide.

Throughoutthedevelopmentprocessofsingle-chip,youcanindicatethedevelopmenttrendofsingle-chip,generallyare:

1.Low-powerCMOStechnology

MCS-51seriesof8031introducedthepowerconsumptionof630mW,andnowwidespreadinthesingle-chip100mWorso,withthegrowingdemandforlow-powersingle-chip,andnowallthebasicsingle-chipmanufacturersareuseofCMOS（complementarymetaloxidesemiconductorprocess）.Asthe80C51ontheuseofHMOS（highdensitymetaloxidesemiconductorprocess）andCHMOS（high-densitycomplementarymetaloxidesemiconductorprocess）.AlthoughtheCMOSlowpowerconsumption,butbecauseofitsphysicalcharacteristicstodetermineitsspeedisnothighenough,andthenCHMOSwithhigh-speedandlowpowerconsumptioncharacteristicsofthesefeatures,itismoresuitableinlowpowerconsumption,asbattery-poweredapplications.Therefore,theprocessforsometimetocomewillbethemainwaytodevelopsingle-chip

2.Ofmicro-chip

Nowaregenerallyinconventionalsingle-chipwillbethecentralprocessingunit（CPU）,randomaccessdatastorage（RAM）,read-onlyprogrammemory（ROM）,parallelandserialcommunicationinterface,systeminterruption,timingcircuits,integratedcircuitclockinasinglechip,enhancedsingle-chipintegration,suchasA/Dconverter,PMW（pulsewidthmodulationcircuit）,WDT（watchdog）,andsomewillbesingle-chipLCD（LCD）driverintegratedcircuitsareinasinglechip,thisunitincludessingle-chipcircuitsonmoreandmorepowerfulfeatures.Evensingle-chipmanufacturerscanalsobetailoredinaccordancewiththerequirementsofusers,tocreateasinglechipwithitsownchipcharacteristics.Inaddition,theproductisnowtheuniversaldemandofsmallsize,lightweight,whichrequiresinadditiontopowerfulsingle-chipandlowpowerconsumption,butalsoitssmallersize.Manynowhaveavarietyofsingle-chippackage,whichSMD（surfacemount）isgainingpopularity,makingthesystemconstitutedbythesingle-chipmicro-movinginthedirectionofdevelopment.

3.Themainstreamandmulti-speciescoexistence

Althoughawidevarietyofsingle-chip,unique,butstillsingle-chipmicrocomputer80C51prevailingatthecore,compatiblewithitsstructureandcommandsystemofPHILIPSproducts,ATMELcompany'

sproductsandChinaTaiwan'

sWinbondSeriesSinglemachine.Therefore,single-chipmicrocomputerasthecoreC8051occupiedthehalf.Microchip'

sPICandreducedinstructionset（RISC）hasastrongdevelopmentmomentumofChinaTaiwanHOLTEKsingle-chipcompaniesinrecentyears,increasingproduction,withitshighqualitylow-costadvantages,tooccupyacertainmarketshare.MOTOROLAadditiontothecompany'

sproducts,severallargecompaniesinJapan'

sexclusivesingle-chipmicrocomputer.Acertainperiodoftime,thissituationwillcontinuetobeupheld,therewillnotbeasingle-chipmonopolydomination,takingthecomplementaryinterdependence,complementarityandcommondevelopment.

Third,thetechnicaldevelopmentofdigitalsingle-chip

Thenumberofsingle-chiptechnologyisreflectedintheinternalstructure,powerconsumption,aswellastheexternalvoltagelevelonthemanufacturingprocess.Intheseareas,moretypicallydescribesthenumberofsingle-chiplevel.Atthemoment,usersneedmoreandmoresingle-chip,butgettinghigherandhigherrequirements.Thefollowingfourareasonwhichthetechnologicalprogressthatthesituationofsingle-chipmicrocomputer.

1,theinternalstructureoftheprogress

Single-chipintegratedin-househasbeenanincreasingnumberofparts,thesepartsincludecommonlyusedcircuits,suchas:

timers,comparators,A/Dconverter,D/Aconverters,serialcommunicationinterface,Watchdogcircuit,LCDcontroller.Somesingle-chipcontrolnetworkinordertoconstituteorformalocalnetwork,theinternallocalareanetworkcontrolmodulecontainstheCAN.Forexample,Infineon'

sC505C,C515C,C167CR,C167CS-32FM,81C90;

Motorola'

s68HC08AZseries.EspeciallyintheC167CS-32FMinsingle-chip,alsocontainstwointernalCAN.Therefore,suchsingle-chipnetworksareveryeasytopose.Especiallyinthecontrolsystemmorecomplicated,theconstituteaveryusefulcontrolnetwork.Inordertofacilitatetheuseofvariablefrequencycontrolofsingle-chip,toformthemostcost-effectiveembeddedcontrolsystems.Somesetupaspecialsingle-chipinternalcontrolforvariablefrequencypulsewidthmodulationcontrolcircuit,thesingle-chipmicrocomputerhasFujitsu'

sMB89850seriesofcompanies,MB89860series;

sMC68HC08MR16,MR24andsoon.Inthesesingle-chip,thepulsewidthmodulationcircuit6-channeloutput,canproducethree-phasePWMACvoltage,andinternalcontrolwithdead-zonefunction.

Ofparticularnoteare:

Itisnowsomehaveadoptedtheso-calledsingle-chiptrinuclear（TrCore）structure.Thisisasystem-levelchipsbuiltonthe（Systemonachip）onthestructureoftheconcept.Thissingle-chipconsistsofthreecorecomponents:

amicro-controllerandtheDSPcore,adataandprogrammemoryisnuclearandthelastoneistheexternalapplicationspecificintegratedcircuit（ASIC）.Themostimportantfeatureofthissingle-chipistheDSPandmicrocontrolleratthesametimedosoinachip.Althoughthestructuredefinition,DSPisatypeofsingle-chip,butitsroleismainlyseeninthehigh-speedcomputingandspecialtreatmentasabove,suchasfastFouriertransform.Itcombinestraditionalsingle-chipintegratedsingle-chipgreatlyenhancedfunctionality.Thisisthesingle-chip,oneofthegrea