INTRODUCTION
AmongthemanyfeaturesbuiltintoMicrochip’s
EnhancedFLASHMicrocontrollerdevicesisthecapa-
bilityoftheprogrammemorytoself-program.Thisvery
usefulfeaturehasbeendeliberatelyincludedtogive
theusertheabilitytoperformbootloadingoperations.
DeviceslikethePIC18F458aredesignedwithadesig-
nated“bootblock”,asmallsectionofprotectablepro-
grammemoryallocatedspecificallyforbootload
firmware.AN247ACANBootloaderforPIC18FCANMicrocontrollersThedrawbacktothisisalackofefficiency,asdirectlyAuthor:RossM.FoslermanipulatingthetargetmemoryandmanuallyverifyingMicrochipTechnologyInc.datatakessignificanttimeontheCANbus.Tomaketheoperationmoreefficient,theprogrammingINTRODUCTIONtargetcouldbegivensomeintelligence,likeself-Amongthemanyfeatures
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