KEELOQAES基于微控制器的发射器与应答

Thisapplicationnotedescribesthedesignofa

microcontroller-basedKEELOQ

®

Transmitterwith

receiverAcknowledgeusingtheKEELOQ/AES

encryptionalgorithm.Thistransmitterisimplemented

ontheMicrochipPIC16F636microcontroller.

Descriptionsoftheencodingprocess,theencoding

hardwareanddescriptionofthesoftwaremodulesare

includedwithinthisapplicationnote.Thesoftwarewas

designedtobebackwardscompatiblewithanHCS365

dualtransmitterintermsofmemorymapprogramming.

Thisdesigncanbeusedtoimplementasecuresystem

transmitterthathastheflexibilitytobedesignedinto

varioustypesofKEELOQreceiver/decoders.The

acknowledgeisachievedbyusinganMRF49XA

transceiver.AN1324KEELOQ/AESMicrocontroller-BasedTransmitterwithAcknowledgeAuthor:CristianTomaOperationMicrochipTechnologyInc.2.0-5.5VoperationFour-buttoninputsINTRODUCTIONAutomaticpacketretryfeatureNonvolatilesynchronizationdataThisapplicationnotedescribesthedesignofamicrocontroller-basedKEELOQTransmitterwithFSKmodulation(handledinternallybythereceiverAcknowledgeusingtheKEELOQ/AES