NXP-UJA1065-技术手册

1.GeneraldescriptionTheUJA1065fail-safeSystemBasisChip(SBC)replacesbasicdiscretecomponentswhicharecommonineveryElectronicControlUnit(ECU)withaControllerAreaNetwork(CAN)andaLocalInterconnectNetwork(LIN)interface.Thefail-safeSBCsupportsallnetworkingapplicationswhichcontrolvariouspowerandsensorperipheralsbyusinghigh-speedCANasthemainnetworkinterfaceandLINasalocalsub-bus.Thefail-safeSBCcontainsthefollowingintegrateddevices:•High-speedCANtransceiver,inter-operableanddownwardscompatiblewithCANtransceiverTJA1041andTJA1041A,andcompatiblewiththeISO11898-2standardandtheISO11898-5standard(inpreparation)•LINtransceivercompliantwithLIN2.0andSAEJ2602,andcompatiblewithLIN1.3•Advancedindependantwatchdog•DedicatedvoltageregulatorsformicrocontrollerandCANtransceiver•Serialperipheralinterface(fullduplex)•Localwake-upinputport•Inhibit/limp-homeoutputportInadditiontotheadvantagesofintegratingthesecommonECUfunctionsinasinglepackage,thefail-safeSBCoffersanintelligentcombinationofsystem-specificfunctionssuchas:•Advancedlow-powerconcept•Safeandcontrolledsystemstart-upbehavior•Advancedfail-safesystembehaviorthatpreventsanyconceivabledeadlock•Detailedstatusreportingonsystemandsub-systemlevelsTheUJA1065isdesignedtobeusedincombinationwithamicrocontrollerwithaCANcontroller.Thefail-safeSBCensuresthatthemicrocontrollerisalwaysstartedupinadefinedmanner.Infailuresituationsthefail-safeSBCwillmaintainthemicrocontrollerfunctionforaslongaspossible,toprovidefullmonitoringandsoftwaredrivenfall-backoperation.TheUJA1065isdesignedfor14Vsinglepowersupplyarchitecturesandfor14Vand42Vdualpowersupplyarchitectures.UJA1065High-speedCAN/LINfail-safesystembasischipRev.05—16November2006ProductdatasheetUJA1065_5©NXPB.V.2006.Allrightsreserved.ProductdatasheetRev.05—16November20062of75NXPSemiconductorsUJA1065High-speedCAN/LINfail-safesystembasischip2.Features2.1GeneralnContainsafullsetofCANandLINECUfunctions:uCANtransceiverandLINtransceiveruVoltageregulatorforthemicrocontroller(3.0V,3.3Vor5.0V)uSeparatevoltageregulatorfortheCANtransceiver(5V)uEnhancedwindowwatchdogwithon-chiposcillatoruSerialPeripheralInterface(SPI)forthemicrocontrolleruECUpowermanagementsystemuFullyintegratedautonomousfail-safesystemnDesignedforautomotiveapplications:uSupports14Vand42VarchitecturesuExcellentElectroMagneticCompatibility(EMC)performanceu±8kVElectroStaticDischarge(ESD)protectionHumanBodyModel(HBM)foroff-boardpinsu±4kVElectroStaticDischarge(ESD)protectionIEC61000-4-2foroff-boardpinsu±60Vshort-circuitproofCAN/LIN-buspinsuBatteryandCAN/LIN-buspinsareprotectedagainsttransientsinaccordancewithISO7637-3uVerylowsleepcurrentnSupportsremoteflashprogrammingviatheCAN-busnSmall8mm×11mmHTSSOP32packagewithlowthermalresistance2.2CANtransceivernISO11898-2andISO11898-5complianthigh-speedCANtransceivernEnhancederrorsignallingandreportingnDedicatedlowdropoutvoltageregulatorfortheCAN-bus:uIndependentfrommicrocontrollersupplyuGuardedbyCAN-busfailuremanagementuSignificantlyimprovesEMCperformancenPartialnetworkingoptionwithglobalwake-upfeature,allowsselectiveCAN-buscommunicationwithoutwakingupsleepingnodesnBusconnectionsaretrulyfloatingwhenpowerisoffnSPLIToutputpinforstabilizingtherecessivebuslevel2.3LINtransceivernLIN2.0compliantLINtransceivernEnhancederrorsignallingandreportingnDownwardcompatiblewithLIN1.3andtheTJA1020UJA1065_5©NXPB.V.2006.Allrightsreserved.ProductdatasheetRev.05—16November20063of75NXPSemiconductorsUJA1065High-speedCAN/LINfail-safesystembasischip2.4PowermanagementnSmartoperatingmodesandpowermanagementmodesnCyclicwake-upcapabilityinStandbyandSleepmodenLocalwake-upinputwithcyclicsupplyfeaturenRemotewake-upcapabilityviatheCAN-busandLIN-busnExternalvoltageregulatorscaneasilybeincorporatedinthepowersupplysystem(flexibleandfail-safe)n42Vbatteryrelatedhigh-sideswitchfordrivingexternalloadssuchasrelaysandwake-upswitchesnIntelligentmaskableinterruptoutput2.5Fail-safefeaturesnSafeandpredictablebehaviorunderallconditionsnProgrammablefail-safecodedwindowandtime-outwatchdogwithon-chiposcillator,guaranteeingautonomousfail-safesystemsupervisionnFail-safecoded16-bitSPIinterfaceforthemicrocontrollernGlobalenablepinforthecontrolofsafety-criticalhardwarenDetectionanddetailedreportingoffailures:uOn-chiposcillatorfailureandwatchdogalertsuBatteryandvoltageregulatorundervoltagesuCANandLIN-busfailures(short-circuitsandopen-circuitbuswires)uTXDandRXDclampingsituationsandshort-circuitsuClampedoropenresetlineuSPImessageerrorsuOvertemperaturewarninguECUgroundshift(twoselectablethresholds)nRigorouserrorhandlingbasedondiagnosticsnSupplyfailureearlywarningallowscriticaldatatobestoredn23bitsofaccess-protectedRAMisavailablee.g.forloggingofcyclicproblemsnReportinginasingleSPImessage;noassemblyofmultipleSPIframesneedednLimp-homeoutputsignalforactivatingapplicationhardwareincasesystementersFail-safemode(e.g.forswitchingonwarninglights)nFail-safecodedactivationofSoftwaredevelopmentmodeandFlashmodenUniqueSPIreadabledevicetypeidentificationnSoftware-initiatedsystemresetUJA1065_5©NXPB.V.2006.Allrightsreserved.ProductdatasheetRev.0