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1、AT89C51的概况TheGeneralSituationofAT89C51Chapter1TheapplicationofAT89C51Microcontrollersareusedinamultitudeofcommercialapplicationssuchasmodems,motor-controlsystems,airconditionercontrolsystems,automotiveengineandamongothers.Thehighprocessingspeedandenhancedperipheralsetofthesemicroc
2、ontrollersmakethemsuitableforsuchhigh-speedevent-basedapplications.However,thesecriticalapplicationdomainsalsorequirethatthesemicrocontrollersarehighlyreliable.Thehighreliabilityandlowmarketriskscanbeensuredbyarobusttestingprocessandapropertoolsenvironmentforthevalidationofthesemi
3、crocontrollersbothatthecomponentandatthesystemlevel.IntelPlaformEngineeringdepartmentdevelopedanobject-orientedmulti-threadedtestenvironmentforthevalidationofitsAT89C51automotivemicrocontrollers.ThegoalsofthisenvironmentwasnotonlytoprovidearobusttestingenvironmentfortheAT89C51auto
4、motivemicrocontrollers,buttodevelopanenvironmentwhichcanbeeasilyextendedandreusedforthevalidationofseveralotherfuturemicrocontrollers.TheenvironmentwasdevelopedinconjunctionwithMicrosoftFoundationClasses(AT89C51).Thepaperdescribesthedesignandmechanismofthistestenvironment,itsinter
5、actionswithvarioushardware/softwareenvironmentalcomponents,andhowtouseAT89C51.1.1IntroductionThe8-bitAT89C51CHMOSmicrocontrollersaredesignedtohandlehigh-speedcalculationsandfastinput/outputoperations.MCS51microcontrollersaretypicallyusedforhigh-speedeventcontrolsystems.Commerciala
6、pplicationsincludemodems,motor-controlsystems,printers,photocopiers,airconditionercontrolsystems,diskdrives,andmedicalinstruments.TheautomotiveindustryuseMCS51microcontrollersinengine-controlsystems,airbags,suspensionsystems,andantilockbrakingsystems(ABS).TheAT89C51isespeciallywel
7、lsuitedtoapplicationsthatbenefitfromitsprocessingspeedandenhancedon-chipperipheralfunctionsset,suchasautomotivepower-traincontrol,vehicledynamicsuspension,antilockbraking,andstabilitycontrolapplications.Becauseofthesecriticalapplications,themarketrequiresareliablecost-effectivecon
8、trollerwithalowinterruptlatencyre
