KEELOQ HCS30X，HCS200独立的编程

Thisapplicationnotedescribeshowtoimplementa

KEELOQstand-aloneprogrammerusingaMicrochip

PIC16F84Amicrocontroller.

ThePIC16F84AisaFLASHmicrocontrollerwith64

bytesofinternalEEPROMthat,inthisdesign,isused

tostoretheincrementalserialnumberprogrammed

intoHCSencoderseverytime.AlltheotherHCScon-

figurationparametersaredefinedasconstantsinthe

FLASHprogrammemoryofthePIC16F84A.AN217KEELOQHCS30X,HCS200Stand-AloneProgrammerKEELOQSIMPLELEARNINGSCHEMEAuthor:MaurizioFiammeniMicrochipTechnologyInc.(FixedKey)ThislearningschemeimplementsthelowestlevelofOVERVIEWsecurityforaKEELOQbasedsecuritysystem.Withthismethod,everyprogrammedencoderhasadifferentThisapplicationnotedescribeshowtoimplementaserialnumber,butthesamefixedEncryptionKeyisKEELOQstand-aloneprogrammeru