lin总线收发芯片TJA1021.pdf
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lin总线收发芯片TJA1021.pdf
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1.GeneraldescriptionTheTJA1021istheinterfacebetweentheLocalInterconnectNetwork(LIN)master/slaveprotocolcontrollerandthephysicalbusinaLIN.Itisprimarilyintendedforin-vehiclesub-networksusingbaudratesfrom1kBdupto20kBdandisLIN2.1/SAEJ2602compliant.TheTJA1021ispin-to-pincompatiblewiththeTJA1020withanimprovedElectroStaticDischarge(ESD)specification.Thetransmitdatastreamoftheprotocolcontrolleratthetransmitdatainput(TXD)isconvertedbytheTJA1021intoabussignalwithoptimizedslewrateandwaveshapingtominimizeElectroMagneticEmission(EME).TheLINbusoutputpinispulledHIGHviaaninternalterminationresistor.Foramasterapplication,anexternalresistorinserieswithadiodeshouldbeconnectedbetweenpinINHorpinVBATandpinLIN.ThereceiverdetectsthedatastreamattheLINbusinputpinandtransfersitviapinRXDtothemicrocontroller.InSleepmode,thepowerconsumptionoftheTJA1021isverylow.Infailuremodes,thepowerconsumptionisreducedtoaminimum.2.Featuresandbenefits2.1GeneralLIN2.1/SAEJ2602compliantBaudrateupto20kBdVerylowElectroMagneticEmission(EME)HighElectroMagneticImmunity(EMI)PassivebehaviorinunpoweredstateInputlevelscompatiblewith3.3Vand5VdevicesIntegratedterminationresistorforLINslaveapplicationsWake-upsourcerecognition(localorremote)K-linecompatiblePin-to-pincompatiblewithTJA1020AvailableinSO8andHVSON8packagesLeadlessHVSON8package(3.0mm3.0mm)withimprovedAutomatedOpticalInspection(AOI)capability2.2LowpowermanagementVerylowcurrentconsumptioninSleepmodewithlocalandremotewake-upTJA1021LIN2.1/SAEJ2602transceiverRev.725March2011ProductdatasheetTJA1021Allinformationprovidedinthisdocumentissubjecttolegaldisclaimers.NXPB.V.2011.Allrightsreserved.ProductdatasheetRev.725March20112of25NXPSemiconductorsTJA1021LIN2.1/SAEJ2602transceiver2.3ProtectionmechanismsHighESDrobustness:
6kVaccordingtoIEC61000-4-2forpinsLIN,VBATandWAKE_NTransmitdata(TXD)dominanttime-outfunctionBusterminalandbatterypinprotectedagainsttransientsintheautomotiveenvironment(ISO7637)Busterminalshort-circuitprooftobatteryandgroundThermallyprotected3.Quickreferencedata4.Orderinginformation1TJA1021T/10andTJA1021TK/10:
forthelowslopeversionthatsupportsbaudratesupto10.4kBd(SAEJ2602);TJA1021T/20andTJA1021TK/20:
forthenormalslopeversionthatsupportsbaudratesupto20kBd.Table1.QuickreferencedataSymbolParameterConditionsMinTypMaxUnitVBATbatterysupplyvoltagewithrespecttoGND0.3-+40VIBATbatterysupplycurrentSleepmode;VLIN=VBAT;VWAKE_N=VBATVTXD=0V;VSLP_N=0V2710AStandbymode;busrecessiveVINH=VBAT;VLIN=VBAT;VWAKE_N=VBATVTXD=0V;VSLP_N=0V1504501000AStandbymode;busdominantVBAT=12V;VINH=12V;VLIN=0VVWAKE_N=12V;VTXD=0V;VSLP_N=0V3008001200ANormalmode;busrecessiveVINH=VBAT;VLIN=VBAT;VWAKE_N=VBATVTXD=5V;VSLP_N=5V3008001600ANormalmode;busdominantVBAT=12V;VINH=12V;VWAKE_N=12VVTXD=0V;VSLP_N=5V124mAVLINvoltageonpinLINwithrespecttoGND,VBATandVWAKE_N40-+40VTvjvirtualjunctiontemperature40-+150CTable2.OrderinginformationTypenumber1PackageNameDescriptionVersionTJA1021T/10TJA1021T/20SO8plasticsmalloutlinepackage;8leads;bodywidth3.9mmSOT96-1TJA1021TK/10TJA1021TK/20HVSON8plasticthermalenhancedverythinsmalloutlinepackage;noleads;8terminals;body330.85mmSOT782-1TJA1021Allinformationprovidedinthisdocumentissubjecttolegaldisclaimers.NXPB.V.2011.Allrightsreserved.ProductdatasheetRev.725March20113of25NXPSemiconductorsTJA1021LIN2.1/SAEJ2602transceiver5.BlockdiagramFig1.BlockdiagramFILTERRXD/INTBUSTIMERCONTROLTJA1021WAKE-UPTIMERWAKE_NVBATSLP_NTXDRXDINHLINGND001aae066SLEEP/NORMALTIMER73241658TEMPERATUREPROTECTIONTXDTIME-OUTTIMERTJA1021Allinformationprovidedinthisdocumentissubjecttolegaldisclaimers.NXPB.V.2011.Allrightsreserved.ProductdatasheetRev.725March20114of25NXPSemiconductorsTJA1021LIN2.1/SAEJ2602transceiver6.Pinninginformation6.1Pinning6.2Pindescription1HVSON8packagediesupplygroundisconnectedtoboththeGNDpinandtheexposedcenterpad.TheGNDpinmustbesolderedtoboardground.Forenhancedthermalandelectricalperformance,itisrecommendedthattheexposedcenterpadalsobesolderedtoboardground.a.TJA1021T/10;TJA1021T/20:
SO8b.TJA1021TK/10;TJA1021TK/20:
HVSON8Fig2.PinconfigurationdiagramsTJA1021TRXDINHSLP_NVBATWAKE_NLINTXDGND015aaa23112346587015aaa232TJA1021TKGNDWAKE_NTXDLINSLP_NVBATRXDINHTransparenttopview45362718terminal1indexareaTable3.PindescriptionSymbolPinDescriptionRXD1receivedataoutput(open-drain);activeLOWafterawake-upeventSLP_N2sleepcontrolinput(activeLOW);controlsinhibitoutput;resetswake-upsourceflagonTXDandwake-uprequestonRXDWAKE_N3localwake-upinput(activeLOW);negativeedgetriggeredTXD4transmitdatainput;activeLOWoutp
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