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1、科技论文Frequencyconversioncontrolsystemmicrocontrollerperipheralcircuitdesign系别尚德光伏学院专业应用电子技术班级0903学生姓名学号指导教师2011年4月15无锡科技职业学院科技论文Frequencyconversioncontrolsystemmicrocontrollerperipheralcircuitdesign_______________________________________________________________________________Fr
2、equencyconversioncontrolsystemmicrocontrollerperipheralcircuitdesign【abstract】single-chipmicrocomputerwithappropriateperipheraldevicesandapplications,consistsoftheapplicationsystembecometheminimumsystem.Thearticletothefrequencyconversioncontrolsystemofthesinglechipmicrocomputer
3、buffercircuitdesignisdiscussed.【keywords】frequencyconversioncontrol;Singlechipmicrocomputer;BuffercircuitThisdesignUSESthechoicePHILIPSsemiconductorscompanywithmanualresetfunctionMAX708products.MAX708canalsomonitorthesecondpowersignal,astheprocessorprovidevoltagedropintowarning
4、function,usingthisfunction,thesystemcanbeinpowersupplyfalltoresetbeforeperformingsomesafetyoperation,saveparameters,sendwarningsignalsorswitchingback-upbattery,etc.Inaddition,thesystemalsoexpandedtheprogrammableperipheralPSD303chip.BecausethesystemI/Omouthquantityandreal?Thepro
5、ductMAX708thatdesignstoadopttochoosePHILIPSthatthesemi-conductorcompaniestaketomovetoresetfunction.TheMAX708canalsokeepwatchonthesecondpowersignalandprovidetheelectricvoltagetheearly-warningfunctionfordroppingintoforprocessorandmakeuseofthisfunction,systemcanwhenthepowerdropint
6、otocarryoutsomesafetyoperationsbeforeresetting,keepparameter,sendoutalertsignalorcutoversparebatteryetc..Ontopofthat,thesystemexpandedprogrammableoutercirclechipPSD303.BecausetheIofsystem
7、theOamountstillhaveaverybigmarginwithactualamountneeded,pastthesystemexpandedtwoslicesof82
8、55Asesagain,theonewasusedforconnectingakeyboardandshownelectriccircuit,theoneisusedforcontacttosendletternumber,andurgentparkingsignal...etc..15无锡科技职业学院科技论文Frequencyconversioncontrolsystemmicrocontrollerperipheralcircuitdesign____________________________________________________
9、___________________________A,keyboardwithshowelectricc