标签: 信号控制器

基于FPGA的嵌入式交通信号控制器的设计与应用

ThepurposeofthisApplicationNoteistofamiliarizeengineerswithPIC16C78Xdesignconsiderations,specifically:•Potentialnoiseproblemsinmixedsignaldesign•Featuresandperformanceofthenewanalog/digi-talperipherals•SomecommonapplicationsforthePIC16C78XThePIC16C781andPIC16C782arethefirstdevicesinanewlineofmixedanalog/digitalmicrocontrollersfromMicrochip.Thesemicrocontrollersareamarriageofourtraditionalmicrocontrollerarchitecturewithnewmixedsignalperipheralsthatchangemanyoftheoldconventionsofembeddedmicrocontrollerdesign.Notonlydothenewperipheralsopenupnewapplicationsforthemicrocontroller,theybringnewdesignconcernsthatmightbeunfamiliartotraditionalmicrocontrollerdesigners.ThisApplicationNotewillhighlightsomeofthecommonproblemsassociatedwithmixedsignaldesignandoffertechniquesforovercomingtheseprob-lems.Itwillalsocoverthefeaturesandperformanceofthenewperipherals.Finally,thisApplicationNotecov-erssomeofthecommonapplicationsthattakeadvan-tageofthePIC16C78X'suniqueperipherals.AN823AnalogDesigninaDigitalWorldUsingMixedSignalControllersIDENTIFYINGNOISESOURCESAuthor:KeithCurtisIdentifyingpotentialnoisesourcesinadesignistheMicrochipTechnologyInc.firststepincontrollingoreliminatingnoiseinamixedsignaldesign.Almostanyactivecircuitinadesigncangeneratenoise;however,somecircuitsaremorelikelytobecomenoisegene……