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1、基于AT89S52和MAX038的程控信号发生器的设计Mechanicalandelectricalengineeringin2008,37(10)mechanicalandelectricalengineeringin2008,37(10)figure1signalgeneratorhardwaredesignblockdiagrambasedonAT89S52devicesandthedesignoftheprogrammablesignalgeneratorMAX038XiongChunru,ju-fanghu,guo-binghuang(atthecollegeofmec
2、hanicalandautomationengineering,jiangxiat338031)abstractdate:2008-04-23abstract:thedesignbasedonMCUAT89S52andMAX038signalgenerator,frequencyandamplitudecanbeusedtoproduceprogrammablesinewave,squarewaveandtriangularwavesignal.MAX038functiongeneratorwithasmallamountofperipheraldeviceresponsible
3、forgeneratingwaveform,thewaveformafterLM6361broadbandpoweramplifiercircuitoutputvoltageamplificationandlevel.ThemaincontrollerAT89S52isresponsiblefortheselectionofwaveform,frequencymodulation,outputamplitudemodulation,LCDdisplay,keyboardoperation,etc.Keywords:signalgenerator;AT89S52;MAX038Chi
4、neselibraryclassificationnumber:TN741literatureidentificationcode:Barticlenumber:1009-949210-0069-041(2008)introductionMAXIMMAX038chipisproducedbyourcompanyAhigh-frequency,precisefunctiongenerator,whichonlyrequireslessconnectionTheoutsidedevicecanproduce0.1Hz~20MHz.ThehighestAtrigofa40MHzThes
5、awtoothwave,thesinewave,ThesquarewaveisaffectedbythepulsewaveandthefrequencyandthecontroloftheairratioI'mgoingtodo[1]independently.ItcanbeachievedbycontrollingMAX038andotherunitcircuitsbysinglechipAT89S52Controlthetype,frequency,outputmagnitudeofthewaveform,etc.Thischangesthelackofmanualregul
6、ationoftraditionalsignalgeneratorsPoints.2signalgeneratorhardwarecircuitdesign2.1hardwarecircuitblockdiagramwholecircuitmainlybyAT89S52singlechipmachineAndpeopleMachineinterface(LCDandkeyboard),powercircuit,Waveformgenerationandcontrolcircuit(signalgenerationcircuit,frequencycontrolcircuitand
7、Switchcircuit),outputdrivecircuit(adjustablevoltageamplifiercircuitandworkThecompositionoftheoutputlevel.Thecircuitdiagramisshowninfigure1Itis.2.2unithardwarecircuitdesign2.2.1man-machineinterfaceAdoptTG12864E(128x64)ThegraphicChinesecharacte
