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INTRODUCTIONAmongthemanyfeaturesbuiltintoMicrochip’sEnhancedFLASHMicrocontrollerdevicesisthecapa-bilityoftheprogrammemorytoself-program.Thisveryusefulfeaturehasbeendeliberatelyincludedtogivetheusertheabilitytoperformbootloadingoperations.DeviceslikethePIC18F458aredesignedwithadesig-nated“bootblock”,asmallsectionofprotectablepro-grammemoryallocatedspecificallyforbootloadfirmware.AN247ACANBootloaderforPIC18FCANMicrocontrollersThedrawbacktothisisalackofefficiency,asdirectlyAuthor:RossM.FoslermanipulatingthetargetmemoryandmanuallyverifyingMicrochipTechnologyInc.datatakessignificanttimeontheCANbus.Tomaketheoperationmoreefficient,theprogrammingINTRODUCTIONtargetcouldbegivensomeintelligence,likeself-Amongthemanyfeatures……