51系列单片机的结构和功能-外文资料翻译

51列单片机的结和功能系在1976年引入8位MCS-48系列单片机了8MCS-系8051，，80C51BH，80C31BH用8051来表51系位CPU微处理）程序器ROM/EPROM中（4KB/8KB用ROM/如，，80c系列等）48排的/O并行口P0~P3，每个口可以用作输入，也可以用作输出2器器计）五）1行IO的（通器器UART在12v的振荡频率ALU算由18暂时存储和2个8位的累。Acc是Acc往对8051内的数据传对8或16位

在芯片为1.2MHz—12MHz。为。在有ROM（RAM（数据存储器，可以。8051为从0000H开00FH，128B有32，8051的-51和RAM地址范围会根据ROMROMRAM。8051的，排用16个地址口0000H为64KB，从0000H到含256B用8个地址用80511

问ROM用问RAM块顺序的MOVX语用MOV语句有个8并的I/O端口，分别为P0，，P2和P3是8位精确了32针。每一个/O个出口驱动器这四个口就可作为双向口常用I/O，P2高8位地址，P0口是一个公共两用口，传送输出低8的地址和数据。口于P1，动4个LS型TTL负有TTL或NMOS式的P1口1如8051单0000H从0000H的地址中RST引24倍即2的6v输2

（6电示波器显2.文文andoftheMCS-51theMCS-51seriesone-chipcomputerMCS-51anameofcomputerwhichIntelThiscompany8computersofseriesin1980introducingcomputersofMCS-48inItbelongtoofkindsthislineofone-chipcomputerchipshave,suchas8051,8751,80C51BH,80C31BH,etc.,theirand3

instructionthe8051dailyrepresentatives-51serialone-chipcomputers.systemmadeupseveralparts:1)microprocessor(CPU).(AtslicedataRAM(128B/256B),itusenotdeposittingnotcanthatwrite,suchresultnotoperation,resultanddatatoshow,(3)memoryROM/EPROM),usedtopreserveproceduredataandslice.ButdoesnotROM/EPROMone-chipsuchas,etc..4)FoursidesideinterfacefourP3,eachcanasintroductionasexporting(Twotimer/counter,timer/countermaytheway,usedtothesetuptimingwayandtocountoftimingthecomputer.6)cutoffcuttingoffcontrolofthesource(allduplexingserialmouthof(universal),itorcommunicationusefor.(oscillatorandclockelectriccapacityneedAllowoscillationfrequency12theabove-mentionedpartjoinedthroughdataCPUistheitofcomputeruparithmeticandcontrollerarithmeticunitcanon8ofALUoflogicwhileincludingone,the1ofstoring2temporarily,BprocedurePSW,ACCcountby2checkingetc.temporarilyasoneoperationoften,frompersonwho1isititgototemporarilyresultone.ACCisoftenastransferofdata8051ThesameasgeneralitistheHelprememberingagreeingAexpressesintheTheincludesthe,theordertheorderdecipher,theoscillatorandtimingcircuit,etc.Theprocedureismadeofcountertwo,toItisabyteaddressprocedurethetheIAwillcarriedoutPC.Thewhichitcanchange4

thedirectiontheprocedure.thecircuitinonlyquartzandfrequencyitsfrequencyrangeisitsof1.2MHZ.pulsesignal,beatsofnamelytheoftime.istheharmonythejustanorchestratobeatiscommanded.areROM(procedurememory,canonly)andRAMinslicesmemory,canitwrite)haveeachmemorywaytotheofmemoryslicememorycapacity4KB,from0000H,forpreservingtheofmemorydatamemory128B,address00FH,resultthedataaretemporarilyanddataarebufferedetc..InRAMofthis128B,thereisunitofthatasthejobregister,thisandgeneralmicroprocessordifferent,sliceRAMjobregisterthearrangethelocation.ItisnotthesamethememoryofMCS-51one-chipandcomputerforaddressspace,ROMandcandifferenttheofwill,addressesROMdistributingdifferentinaformation.Whilevisitingthememory,andanaddressMemoryROM,itcanbeRAMandbyvisitingtheorderkindofstructureiscalledtheofintomemoryspacedatamemoryspaceonthephysicsarefourspacesTheanddataspaceandofkindofanddatamemoryformdatamemory,calledHarvardButuseanglefromusers,spaceisdividedinto(1)Inthearrangeof,0000Hoflocationinunisontheslice(use16addresses).(2)datamemoryofthefrom0000H16addresses)tootothelocation.(3)memoryspaceof256B(use8above-mentionedmemoryspacefordistinguishingdesigningthesymboldifferentdatainthe5

instructionofCPUROMMOVC,usestheslice,RAMordercomputerfour8callandEach8accuratealtogether.Everyonelineintroductionandindependently.Eachportincludeslatch(namelyregister),onethedriverintroductionbuffer.datacanlatchwhendatacanbufferintroduction,butfourfunctionofpasswaytheseamongthesystemmemoryoutsidefourporttwo-waymouthofcommonuse.Expandthesystemmemorymouthseemouthtwo-waybus,theintroduction8lowaddressesanddata/exporttimesharingOutputP3ofmouth,ofP1,connectinsideofdrawing,everydrive4LStoAswhileinputtingthemouth,TTLorNMOScircuitP1ofasP3mouthinanormal.drawonoutputgradeofthemhave,openwaycollectordrain-sourceisiturgetoopenahaveofdrawingouterly.two-waymouthstoo.Whentheconductinput,writeportlatchwithAs80C51one-chipcomputer,portcanonlyoffermilliampereoutputitoutputmouthurgingoneordinarybasingoftransistoras,aamongtheportandbaseinordertothewhilelevelfromexportingBeingthethronetheofofancomputer.toturn0000Hinitially,theone-chiptothefromExceptthatonesthatenterthesystemareinitializednormally,asprocedureitmistakesoroperatetherearen'tmistake,inextricatefromapredicament,beandthethronekeytoo.ItisaninputendwhichisrestoredtothethroneRSTpin.Restoretothethroneeffective,should242cycles)theaboveitseffectivetimes.If6offrequencyutilizationtoshake,tothesignalshould4tofinishrestoringtotheandProducelogicpictureofcircuitwhichisrestoredthe6

signal:tocircuittwopartsoutsidetheentirely.thatcircuitthesignal(RSThandSchmitt'sthethronecircuitto,Schmitttriggerconstantly,ofcycleone,thengotrestoredtheandoperatedthenecessarysignaltheresistanceofcircuitelectriccapacityparametersuitablefor6canisitrestorethethronesignalhighdurationgreater2machinetoguarantee.BeinginthecircuitisPiecesofsystemcouldrunning,shouldittheCheckingone'sheadmonitorthepinthepushrestoredthekey,thewaveformobservesandenoughrangecanalsoitrestoretothecircuitgroupholdingcarrytochange.8CPU7

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MQ-2型半导应快用STC12C5410AD了转换目STC12C5410ADMQ-2，，传Abstractthemethod--sensortechnology,itsdomainisandwidespread,ismoreandrequest,themoreurgent.Thebecomeweighsoneofnationallevelofimportantsymbols.Therefore,andgraspskindoftheprinciplethecharacteristicimportant.10

Intotoandunderstanding,inparticularsmogresearchasitstheuse,onpractical,widespreadthemodelprincipledesignedthissystem.Thisarticlethemonolithiccircuitunionsensordevelophasdesignedthissupervisorysystem.presentpaperthesmogthemonolithiccircuitunifiesasthecoreandtechnology,designskindofsmogalarmapparatus.Inwhichthe2M007resistancesmogrealizationsmogthethehigh,responds,theandonmerits,thepriceisinexpensive,theservicelifeislong.SelectstheSTC12C5410ADmonolithicitsconformityhardwaremultiplier,resourcesandonPDMkeyer,hashighlowmeritsandsopowerloss,ultraisthesimilartechnologyquitehighproduct.MaytheSTC12C5410ADmonolithiccircuit2M007semiconductorgasasthedesignalarmapparatustoreporttothepolice,thebreakdownfromdiagnosis,demonstrated,reportstothethetimedelaytoandwithfunctionsandsomachinecorrespondence.Iskindthe11

theeasytooperate,thepriceinexpensive,thesmogalarmcertainpracticalvalue.Keyword:Smog,alarmapparatus,STC12C5410,sensor具有高集成度等优点，开发设计了一种基于AT89C51为了提高系统的灵敏度和准确性器MQ-7CO）控制电路进行报关词CarbonisdesignedonAT89C51alevelofintegration.Inordertoimproveand,theused.Thealarmismonitoredon-time,permittedvaleoftheofcarbonexceeded,thecircuitwillalarm,anditis-externalvalvewithKey：carbonmonoxide;alarm;electrochemicalsensor1.能征述12

能CMOS8在程存公司高密度非易失性存储器技术制造，与Flash芯灵8和在系统可编Flash，AT89S52为众多嵌入式控制应用系统提供8k字节字节RAM位，个数据指针，三个