MAX202E在串行通信中的应用

38427Voi.38No.427200l7EiectricaiMeasurement&InstrumentationJui.200l-51-MAX202EMAX202EAT89C5lUARTPCMAX202ERS-232TN43Bl00l-l390200l07-005l-03ApplyingchipMAX202EinserialcommunicationLiJialSunXueging2MaoLeshanlFengYuzhull.TsinghuaUniversityBeijingl00084China2.ThelstManagementCompanyofDagingPetroieumAdministrationBureauHeiiongjiangDagingl63453ChinaAbstractAkindofseriaicommunicationinterface,basedonthemicrocomputerAT89C5landMAX202E,andreiativehardwaredesignandsoftwareprocedurewhiietransmittingwiththePCareintroducedinthispaper.KeywordsmicrocomputerseriaicommunicationMAX202EdriveRS-232standardl2lll.l000842.l634530UART/MAX202E1MAX202ERS-232RS-422RS-423RS-44920mARS-232RS-232RS-232-5V~-l5Vl+5V~+l5V0l-3V~-l5V0+3V~+l5V2VRS-232TTLTTLRS-232MCl488MCl489MCl488l5Vl2VTTLRS-232MCl499RS-232TTL+5VMCl489RS-232MCl488MCl489MAXIMRS-232MAX202E/MAX202E/22,l20kbit/s3V/!sMAX202EEiectrostaticDischargeESDRS-232RlINl3R2IN8TlINllT2INl0GNDl5V+2V-6VCCl6RlOUTl2R2OUT9TlOUTl4T2OUT7Cl+lCl-3C2+4C2-5U9MAX202EC50.lufC60.lufC70.lufC80.lufC90.lufVCCTXDRXDl23J4CON3RS-232TTL/CMOS:l5kVIEC80l-2:8kV:l5kVRS-232MAX202E+5V40.l!Fl0!FVccllMAX202E2AT89C5lUART/P3.0P3.lP3.0RXDP3.lTXDSBUFl99Hl08I/O2l8l0329ll439ll29PCAT89C5l24MHz9600bit/s-52-38427Vol.38No.427200l7ElectricalMeasurement&InstrumentationJul.200lAT89C5lTMOD=0x20;/*T2*/Tll=0xF3;/*TllTHl*/THl=0xF3;SCON=0x58;/*l*/PCON=0x80;/*SMODl*/EA=0;/*CPU*/in5=0;TRl=l;/*Tl*/while(in5l28){TI=0;/*TI*/pr[in5]=pr[in5]*4096/20;/**/SBUF=pr[in5];/**/while(TI==0);TI=0;in5++;}EA=l;/*CPU*/pr[in5]PCl2PC88A/Dl23RS-232RS-2322225lPCPC9RS-232TXD/RXDTXDRXDPCTXDRXDPCRS-232223l20685472223l206854722TXDRXDRTSCTSDCDDSRDTRRI2RS-232C1RS-2321*13CTS2*143*15*DCE4*RTS165*CTS17DCE6*DCE187*19RTS8*20*9*)21*1022*1123*DTE/DEC1224*DTE25-53-38427VoI.38No.42720017EIectricaIMeasurement&InstrumentationJuI.20014PCWindowsVisuaIC++OLE(OCX)5AT89C51PCMAX202EAT89C51PC9600bit/s30s20K1.MSC-51/98M.1997.2.M.1992.3DavidJ.KrugIinskiScotWingoGeorgeShepherdM.VisuaIC++5.0.2000.1977-2001-05-02401.M.1999.2.LonWorksM.1994.3LonWorksJ.19997~20009.4.J.20011.5.LonWorksJ.20006.6.J.20003.7LonMakerForWindowsUser'sGuide2.0.ECHELON2000.8LNSDDESeverUser'sGuide.ECHELON2000.9TP/FT_10FIashControIModIe..1977-LonWorks2001-04-29MAX202E在串行通信中的应用作者：李佳，孙学庆，毛乐山，冯玉珠作者单位：李佳,毛乐山,冯玉珠(清华大学精密仪器与机械学系,)，孙学庆(大庆石油管理局,)刊名：电测与仪表英文刊名：ELECTRICALMEASUREMENT&INSTRUMENTATION年，卷(期)：2001,38(7)被引用次数：2次参考文献(3条)1.赵长德;李华;李东MSC—51/98单片机原理与应用19972.陈汝全微机与单片机接口技术及应用19923.DavidJ;Kruglinski;ScotWingo;GeorgeShepherd希望图书创作室ProgrammingMicrosoftVisualC++60技术内幕2000引证文献(2条)1.王海燕.邹丽新.马励行一种基于高速并行A/D转换的激光Z扫描的高频窄脉冲信号幅值测量系统的设计[期刊论文]-现代电子技术2009(3)2.钟秀贤全无线遥测系统[学位论文]硕士2003引用本文格式：李佳.孙学庆.毛乐山.冯玉珠MAX202E在串行通信中的应用[期刊论文]-电测与仪表2001(7)