PIC16C433 LAN 从节点

ThePIC16C433isastandardPIC16CXXXmicro-

controllerwithaLIN(LocalInterconnectNetwork)

transceiverintegratedintothedevice.Therefore,the

microcontrolleralreadyhasthenecessaryhardwareto

easilyintegratethedeviceintoaLINsystem.This

applicationnoteprovidesafirmwarebase(driver)for

thesystemdesignertouseonthePIC16C433.The

driverutilizestheresourcesavailable,includingthe

Timer0module,Timer0prescaler,GPIOinterrupt-on-

changeortheexternalinterrupt,andtheLINtrans-

ceiver.Inthisdocument,significanteffortisspentdem-

onstratinghowtosetupandusethedriver.Some

generalinformationandtipsarealsodiscussedtohelp

thedesignerbuildtheirapplicationseamlesslyinthe

LINenvironment.Inaddition,forthecuriousdesigner,

someadditionaldetailsaboutthedriverareprovided

towardtheendofthedocument.

Thereadershouldnoteinformationinthisapplication

noteispresentedwiththeassumptionthatthereader

isfamiliarwithLINspecificationv1.2,themostcurrent

specificationavailableattheinitialreleaseofthisdoc-

ument.Therefore,notalldetailsaboutLINaredis-

cussed.Refertothereferenceslistedonpage14for

additionalinformation.AN240LINSlaveNodeonaPIC16C433Author:RossFoslerFIGURE1:AVAILABLEPROCESSTIMEMicrochipTechnology,Inc.(FOSCAT4MHZ)INTRODUCTIONAverageTimeAvailable70%ThePIC16C433isastandardPIC16CXXXmicro-controllerwithaLIN(LocalInterconnectNetwork)transceiverintegratedintothedevice.Therefore,the