标签: 复位ic

Microcontrollerandmicroprocessorbasedsystemsrelyonpro-cessorsupervisoryfunctionstoinsurestableoperation.Themostbasicofallthesefunctionsismanagingtheprocessorresetinput.Toensurestableoperation,theprocessormustbeheldinresetanytimesupplyvoltageisout-of-tolerance.Oncesupplyvoltageisin-tolerance,theprocessormustbemaintainedinresetforanadditionaltimeperiodtoensureastablestart-up.Theprocessorresetfunctionmaybecontainedon-boardtheprocessoritself,ormaybeexternallyimplementedusingdiscretecomponentsorasupervisorIC.AN802SelectingaProcessorResetICAuthor:PaulPaglia,VDDMicrochipTechnology,Inc.INTRODUCTIONVCCMicrocontrollerandmicroprocessorbasedsystemsrelyonpro-cessorsupervisoryfunctionstoinsurestableoperation.Themostbasicofallthesefunctionsismanagingtheprocessorresetinput.MCLRToensurestableoperation,theprocessormustbeheldinresetanytimesupplyvoltageisout-of-toler……