大量鼎天RoyalTekREB-3571LP

Buildonhighperformance,low-powerSiRFstarIIIchipsetExtremefastTTFF(thetimetofirstfix)atlowsignallevel20–channelGPSreceiverSBAS(WAAS,EGNOSEuroGeostationaryN**igationOverlayService)supportFulln**igationaccuracyprovidedbyStandardPositioningService(SPS)Receptionfrequency1575.42MHzCPU(ARM7TDMI)with4MbofinternallypackagedFlashmemoryAdvancedPowerManagement.(Themodeoflowpowermanagementwhensignallevelsarelessthan30dBHz.Updateratesarelimitedfrom10secondsto255seconds.)2UARTS,highspeedserialbusSupportstandardNMEA0183protocol(Version.3.0GGA,GSA,GSV,RMC,VTG)InternalRTC(RealTimeClock)Build-in+3~5VDCconverterShieldingcaseincludingPerformanceAcquisitiontime(openskyandstationary)Reacquisition**erage0.1secHotstart<**erage1secondsWarmstart<**erage38secondsColdstart<**erage42secondsAccuracyPosition10metersRMSwithoutSAVelocity0.1meters/second,withoutSATime1microsecondsynchronizedtoGPStimeDatumWGS-84(orbydemand)SensitivityTracking-159dBm(**erage)DynamicsAltitude<18000meterVelocity<515m/secAcceleration<4gFrequencyL1,1575.42MHzC/AcodePowerConsumptionUnder65mAfullyactivePower&InterfacecharacteristicsSerialI/Oport2UARTS,highspeedserialbusI/OProtocolNMEA0183(default)BaudrateDefaultbaudrateforSSIIINMEAis4800baud.ThedefaultserialportsettingorSiRFbinarymodeis57600,N,8,(L)X25.4(W)X2.8(H)mmWeight4gEnvironmentconditionsOperatingtemperature-20°C~+80°CStoragetemperature-20°C~+85°COperatinghumidity5%~95%RH,NoncondensingAssignmentofConnectorPINDescription1VCC_IN+3.3V~3.6Vdcpowerinput(SystemPower)2GNDGround3BootselectBootselection.Pullhighthispinatpoweronstageforflashprogramming.4RXASerialDatainputportA5TXASerialDataoutputportA6TXBSerialDateoutputportBforusersapplication(notcurrentlyused).7RXBSerialDateinputportBforusersapplication(notcurrentlyused).8GPIO14ExternalGPSsystempowercontrol,internalpulllow.(mustbeLow)9RF_ONIndicationforRFpowersupply.Flashesintricklepowermode.10GNDGround11GNDGround12GNDGround13GNDGround14GNDGround15GNDGround16GNDGround17RF_INGPSsignalinput18GNDGround19V_ANT_IN+3.0V~5VdcDCpowersupplyforactiveantenna.20VCC_RFDCpowersupplyforactiveantenn*,2.85*21V_BATBatterybackupinput.2.5Vto3.6V,10uAtypical.IfBackupBatteryonboardthispinfloating.(Option)22N_RESETReservedforSysteminputreset(ActiveLow),Ifnotuse,thispinfloating.23GPIO10GeneralpureI/O1024GPIO1GeneralpureI/O125GPIO2GeneralpureI/O226GPIO0GeneralpureI/O027GPIO13GeneralpureI/O1328GPIO15LEDindicateforGPSstatus29TIMEMARK1PPSTimemarkoutput30GNDDigitalground