单片机外文翻译.docx

外文资料STC89C52ProcessingChipPrimefeatures:WithMCS-51SCMproductcompatibility,8KbytesinthesystemprogrammableFlashmemory,1000timesCaXiecycle,thestaticoperation:0Hz33Hz,tripleencryptionprogrammemory,32programmedI/Oport,three16timer/counter,theeightuninterrupteddual-careerUARTserialpassage,lowpowerconsumption,leisureandfallafterfallelectricpowermodecanbeawakenedandcontinuouswatchdogtimeranddouble-numberpointer,poweridentifier.Efficacy:characteristicsSTC89C52isonekindoflowpowerconsumption,highCMOS8bitmicro-controller,8KinsystemprogrammableFlashmemory.Usehigh-densitynonvolatilestoragetechnology,andindustrial80C51productinstructionandpinfullycompatible.TheFlashmemorychipsallowsprogramsinthesystem,alsosuitableforprogrammableconventionalprogramming.Inasinglechip,haveclever8bitsCPUandonlinesystemprogrammableFlash,increaseSTC89C52formanyembeddedcontrolsystemtoprovidehighvigorousapplicationandusefulsolutions.STC89C52hasfollowingstandardefficacy:8kbyteFlashRAM,256bytes,32I/Oport,thewatchdogtimer,two,threepointernumericalounter,a6vectorlevel2continuousstructure,theserialport,workingwithincrystalsandhorologicalcircuit.Inaddition,0HzAT89S52candroptothestaticlogicoperation,supporttwosoftwarecanchoosepowersavingmode.Idlemode,theCPUtostopworking,andallowstheRAM,timer/counters,serial,continuoustowork.Protectionasanapattern,RAMcontentissurvival,vibratorsfrozen,SCM,untilalltheworkunderacontinuousorhardwarereset.8-bitmicrocontrollers8KbytesinthesystemprogrammableFlashAT89S52devices.Mouth:P0P0mouthisatwo-wayopendrainI/O.Asexport,eachcandriveeightTTLlogiclevel.ForP0porttowrite1,footasthehighimpedanceinput.Whenaccesstoexternalprogramsandnumericalmemory,alsoknownaslowP0moutheightaddress/numericalreuse.Inthismode,withtheinternalP0resistor.Intheflashwhenprogramming,alsousedforP0mouth;absorbinstructionbytesIntheprocess,theoutputcommandbytecalibration.Whentheprogramrequiresexternal,calibrationonpull-upresistors.Mouth:P1mouthP1isanrnalresistanceoftheeighttwo-wayI/Obufferscandrive,P1outputfourTTLlogiclevel.Towrite1P1port,theinternalresistancetoport,canpushasinputmouth.Whenusedasinput,externalandinternalfootbecauseoflowresistance,willoutputcurrent(IIL).Inaddition,P1.0andP1.2respectivelytimer/counter2externalcountinginput(P1.0/T2)andwhenthetriggereditor/counterP1.1input(2),specificT2EX/areshownbelow.Inprogrammingandcalibration,flashP1mouthabsorbeightaddresslowbyte.Efficacy:thefoot.P1.0T2(timer/counterT2externalcountinginput),clockoutputP1.1T2EX(timer/counterT2capture/overloadedtriggeredsignalsanddirectioncontrol),P1.5MOSI(with)onlinesystemprogramming,P1.6MISO(with)onlinesystemprogramming,P1.7SCK(with)onlinesystemprogramming,Mouth:P2P2mouthisaninternalresistanceoftheeighttwo-wayI/ObuffersandP2outputcandrivefourTTLlogiclevel.Towrite1P2port,theinternalresistancetoport,canpushasinputmouth.Whenusedasinput,externalandinternalfootbecauseoflowresistance,willoutputcurrent(IIL).Intheexternalprogrammemoryaccessoruse16bitexternalnumericalmemoryaddressread(forexampleMOVXexecutionDPTR),P2mouthsendouthigh8address.Inthisapplication,P2mouthontheinternalusestrongpullsend1.Inusing8-bitaddress(suchasMOVXRI)accesstoexternalnumericalmemory,P2mouthoutputP2latchescontent.Inprogrammingandcalibration,flashP2mouthalsoabsorbhigheightaddressbyteandsomecontrolsignal.P3:aP3mouthontheinsideoftheeighttwo-waypull-upresistorsI/Obufferscandrive,p2outputfourTTLlogiclevel.ForP3porttowrite1,theinternalresistancetoport,canpushasinputasinput,externalandinternalfootbecauseoflowresistance,willoutputcurrent(IIL).P3mouthAT89S52specialfunctions(alsoasthesecondefficacy),areshownbelow.Inprogrammingandcalibration,flashalsoabsorbsomeP3mouthcontrolsignals.Portpinsecondefficacy:P3.0RXD(serialinput)P3.1TXD(serialexport),P3.2INTOthediscontinuous(0)P3.3INT1(1)thediscontinuousP3.4(time/counterTO0)P3.5T1(1)time/counter,P3.6WR(externalnumericalmemorywritefor)P3.7RD(externalnumericalmemoryreadfor)Inaddition,alsoabsorbsomeusedinmp3mouthFLASHmemoryprogrammingandcalibrationofprogramcontrolsignals.RST,resetinput:whenthevibrator,RSTpinappearedtwomachinecycleabovehighlevelwillberesetthechip.ALE/PROG-whenaccesstoexternalprogrammemoryornumericalmemory,ALE(addresslatchallow)outputpulsesareusedtolatchaddressofloweightbytes.Normally,ALEwithclockfrequenciesare1/6outputpulsesignalwithfixed,soitcanbeusedforthepurposeoroutputclocks.TimingThosewhowantanattentionis:wheneveraccesstoexternalnumericalmemorywillskipaALEpulse.ForFLASHmemoryprogramming,thispinisusedforinputprogrammingpulse(.)PROGIfnecessary,butthroughspecialeffecttothezoneregisters(SFR)8EHD0position,theunitcanbebannedALEoperations.Thispositionisabit,MOVXandMOVCinstructionswillbeactivated.ALE-Inaddition,thefootwillbeweak,executenalprogramMCUhignshouldbebanned,avoid.SetALEPSEN-programstoragePSENallowed(outputisoutsideoftheprogrammemoryread,choosecommunicationbyexternalprogrammemorywhentakingAT89C52instructions(or),eachmachinecyclePSENtwice,twopulseoutputisuseful,duringthisperiod,whenaccesstoexternalnumericalmemory,willskipPSENtwice.EA/VPP-externalaccesspermission,tomaketheCPUonlyaccesstoexternalprogrammemory(addressfor0000H-FFFFH),EAendmustremainlowlevel(ground).Shouldnoticeis:ifaLB1isencryptedtwhenprogrammingwilllatchEAend.AsforthehighleveloftheEA(VCCS),theCPUistheimplementationoftheprogrammemoryinternalinstructions.FLASHmemorywhenprogramming,thispinplus+12vprogrammingallowpowerVpp,ofcourse,thatisthepartisusedtoVppvoltage12Vprogramming.中文翻译STC89C52处理芯片首要性能：与MCS-51单片机产物兼容、8K字节在系统可编程Flash存储器、1000次擦写周期、全静态操作：0Hz33Hz、三级加密程序存储器、32个可编程I/O口线、三个16位定时器/计数器八个间断源、全双职工UART串行通道、低功耗空闲和掉电模式、掉电后间断可唤醒、看门狗定时器、双数值指针、掉电标识符。功效特性描述：STC89C52是一种低功耗、高性能CMOS8位微控制器，具有8K在系统可编程Flash存储器。使用高密度非易失性存储器技术制造，与工业80C51产物指令和引脚完全兼容。片上Flash允许程序存储器在系统可编程，亦适于常规编程器。在单芯片上，拥有灵巧的8位CPU和在线系统可编程Flash，使患上STC89C52为众多嵌入式控制应用系统提供高矫捷、超有用的解决方案。STC89C52具有以下标准功效：8k字节Flash，256字节RAM，32位I/O口线，看门狗定时器，2个数值指针，三个16位定时器/计数器，一个6向量2级间断结构，全双职工串行口，片内晶振及钟表电路。另外，AT89S52可降至0Hz静态逻辑操作，支持2种软件可选择节电模式。空闲模式下，CPU停止工作，允许RAM、定时器/计数器、串口、间断继续工作。掉电保护体式，RAM内容被生存，振动器被冻结，单片机一切工作停止，直到下一个间断或者硬件复位为止。8位微控制器8K字节在系统可编程FlashAT89S52P0口：P0口是一个8位漏极开路的双向I/O口。作为输出口，每位能驱动8个TTL逻辑电平。对于P0端口写“1”时，引脚用作高阻抗输入。当访问外部程序和数值存储器时，P0口也被作为低8位地址/数值复用。在这种模式下，P0具有内部上拉电阻。在flash编程时，P0口也用来吸收指令字节；在程序校验时，输出指令字节。程序校验时，需要外部上拉电阻。P1口：P1口是一个具有内部上拉电阻的8位双向I/O口，p1输出缓冲器能驱动四个TTL逻辑电平。对于P1端口写“1”时，内部上拉电阻把端口拉高，此时可以作为输入口使用。作为输入使用时，被外部拉低的引脚由于内部电阻的原因，将输出电流（IIL）。此外，P1.0和P1.2分别作定时器/计数器2的外部计数输入（P1.0/T2）和时器/计数器2的触发输入（P1.1/T2EX），具体如下表所示。在flash编程和校验时，P1口吸收低8位地址字节。引脚号第二功效：P1.0T2（定时器/计数器T2的外部计数输入），钟表输出P1.1T2EX（定时器/计数器T2的触发信号和方向控制）P1.5MOSI（在线系统编程用）P1.6MISO（在线系统编程用）P1.7SCK（在线系统编程用）P2口：P2口是一个具有内部上拉电阻的8位双向I/O口，P2输出缓冲器能驱动四个TTL逻辑电平。对于P2端口写“1”时，内部上拉电阻把端口拉高，此时可以作为输入口使用。作为输入使用时，被外部拉低的引脚由于内部电阻的原因，将输出电流（IIL）。在访问外部程序存储器或者用16位地址读取外部数值存储器（例如执行MOVXDPTR）时，P2口送出高八位地址。在这种应用中，P2口使用很强的内部上拉发送1。在使用8位地址（如MOVXRI）访问外部数值存储器时，P2口输出P2锁存器的内容。在flash编程和校验时，P2口也吸收高8位地址字节和一些控制信号。P3口：P3口是一个具有内部上拉电阻的8位双向I/O口，p2输出缓冲器能驱动四个TTL逻辑电平。对于P3端口写“1”时，阻把端口拉高，此时可以作为输入口使用。作为输入使用时，被外部拉低的引脚由于内部电阻的原因，将输出电流（IIL）。P3口亦作为AT89S52特殊功效（第二功效）使用，如下表所示。在flash编程和校验时，P3口也吸收一些控制信