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1、華南理工大學(xué)畢業(yè)設(shè)計(jì)（論文）1外文資料外文資料AnAnalysisofFaultEffectsPropagationsinAVRMicrocontrollerATmega103(L)AlirezaRohani，Ha.R.ZariAbstract：Thispaperpresentsananalysisoftheeffectspropagationsoftransientfaultsbysimulationbasedfaultinjecti

2、onintotheAVRmicrocontroller.Thisanalysisisdonebyinjecting20000transientfaultsintomaincomponentsoftheAVRmicrocontrollerthatisdescribedinVHDLlanguage.ThesensitivitylevelofvariouspointsoftheAVRmicrocontrollersuchasALUInstru

3、ctionRegisterProgramCounterRegisterfileFlagRegistersagainstfaultmanifestationisconsideredevaluated.ThebehaviofAVRmicrocontrolleragainstinjectedfaultsisreptedshownthatabout41.46%offaultsarerecoveredinsimulationtime53.84%o

4、ffaultsareeffectivefaultsreminding4.70%offaultsarelatentfaultsmeoveracomparisonofthebehaviofAVRmicrocontrollerinfaultinjectionexperimentsagainstsomecommonmicroprocesssisdone.Resultsoffaultanalyzingwillbeusedinthefuturere

5、searchtoproposethefaulttolerantAVRmicrocontroller.Keywds：AVRmicrocontroller，transientfaults，VHDLlanguage，sensitivityleve，faulttolerantAVRmicrocontroller1.IntroductionInrecentyearsreliabilityisbecomingthemajfactindesignin

6、gmicroprocessmicrocontrollerarchitectures[1].AftercriticalbugsinPentiumFDIVin1994SunMicrosystemsinearly2000[2]designersareconcentratedtoincludefaulttoleranttechniquesalternativelytheyneedanestimationofbehaviofdesignedarc

7、hitectureagainstvariousfaults.Firststeptodesignafaulttolerantarchitectureistoanalyzetheeffectspropagationsoffaultsindesignedarchitecture.Oneofthebestmethodstoestimatebehaviofarchitectureagainstvariousfaultsissimulationba

8、sedfaultinjectionthatdescribedthearchitectureinoneofHDLlanguagessuchasVHDLVERILOGtheninjectingfaultsindesiredpointsobservedimptanttargets.Wehaveusedsimulationbasedfaultinjectionsinceithascapabilityofhighcontrollabilityhi

9、ghobservabilitycomparedtootherfaultinjectionmethods.Simulationbasedfaultinjectionisusedinseveralwks.In[3]ananalysisofthe華南理工大學(xué)畢業(yè)設(shè)計(jì)（論文）32.AVRMicrocontrollerArchitectureAVRmicrocontrollerisahighperfmancelowpowermicrocontro

10、llerwhichutilizedHarvardarchitecture.AVRsaregenerallyclassifiedintofourgroups:1)tinyAVRs2)megaAVRs3)xmegaAVRS4)specificAVRS.megaAVRshavespecialfeaturesnotfoundonothermembersoftheAVRfamiliessuchasLCDcontrollerUSBcontrolle

11、rCAN[1014]therefeamemberofmegaAVRsnamedATmega103(L)isstudiedhere.ATmega103(L)isa8bitRISCarchitecturethatexecutespowerfulinstructionsetinasingleclockcyclethisfeatureallowingthedesignertooptimizepowerconsumptionversusspeed

12、.Richinstructionsetwith32generalwkingregistersthataredirectlyconnectedtotheALUvariousaddressingmodesisamajarchitecturalbenefitinthedesignofATmega103(L).AnoverviewoftheATmega103(L)architectureisshowninFigure1.Ithas8bitDat

13、aBuss16bitAddressBussthatfeedsthroughDataBuss16bitProgramCounter(PC)12bitInstructionRegister(IR)manyadditionalfeaturessuchas128Kbytesofinsystemprogrammableflash4KbytesSRAMmemyrealtimecountersUARTetc.Figure2illustratesthe

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