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ADIADuCRF101低功耗无线数据采集解决方案关键字：工业控制,数据采集ADI公司的ADuCRF101是全集成无线数据采集系统,集成了12位SARADC,低功耗ARMCortex™-M3处理器,862MHz-928MHz和431MHz-464MHzRF收发器以及闪存/EE存储器,包括UART,I2C,SPI,GPIO端口和PWM在内的外设,主要用在无线传感器,远程医疗系统,工业和家庭自动化,财产跟踪,安全系统以及医疗保健设备等.本文介绍了ADuCRF101主要特性和优势,框图,ADuCRF101迷你评估板主要特性,电路图和PCB元件布局图.TheADuCRF101isafullyintegrated,dataacquisitionsolutionthatisdesignedforlowpower,wirelessapplications.Itfeaturesa12-bitanalog-to-digitalconverter(ADC),alowpowerARMCortex™-M3processor,a862MHzto928MHzand431MHzto464MHzRFtransceiver,andFlash®/EEmemory.TheADuCRF101ispackagedina9mm×9mmLFCSP.Thedataacquisitionsectionconsistsofa12-bitSARADC.Thesixinputscanbeconfiguredinsingle-endedordifferentialmode.Whenconfiguredinsingle-endedmode,theycanbeusedforratiometricmeasurementsonsensorsthatarepowered,whenrequired,fromtheinternallowdropoutregulator(LDO).Aninternalbatterymonitorchannelandanon-chiptempera-turesensorarealsoavailable.Thiswirelessdataacquisitionsystemisdesignedtooperateinbattery-poweredapplicationswherelowpoweriscritical.Thedevicecanbeconfiguredinnormaloperatingmodeordifferentlowpowermodesunderdirectprogramcontrol.Infleximode,anyperipheralcanwakeupthedeviceandoperateit.Inhibernatemode,theinternalwake-uptimerremainsactive.Inshutdownmode,onlyanexternalinterruptcanwakeupthedevice.TheADuCRF101integratesalowpowerARMCortex-M3processor.Itisa32-bitRISCmachine,offeringupto1.25DMIPSpeakperformance.TheARMCortex-M3processoralsohasaflexible14-channeldirectmemoryaccess(DMA)controllerthatsupportscommunicationperipherals,serialperipheralinterface(SPI),UART,andI2C.Alsoprovidedonchipare128kBofnonvolatileFlash/EEmemoryand16kBofSRAM.A16MHzon-chiposcillatorgeneratesthesystemclock.Thisclockcanbeinternallydividedfortheprocessortooperateatalowerfrequency,thussavingpower.Alowpower,internal32kHzoscillatorisavailableandcanbeusedtoclockthefourtimers,asfollows:twogeneral-purposetimers,awake-uptimer,andasystemwatchdogtimer.Arangeofcommunicationperipheralscanbeconfigured,asrequired,inaspecificapplication.TheseperipheralsincludeUART,I2C,SPI,GPIOports,PWM,andRFtransceivers.TheRFtransceivercommunicatesinthe862MHzto928MHzand431MHzto464MHzfrequencybandsusingmultipleconfigurations.On-chipfactoryfirmwaresupportsin-circuitserialdownloadviatheUART,andnonintrusiveemulationandprogramdownloadarealsosupportedviatheserialwireinterface.Thesefeaturesareincorporatedintoalowcostdevelopmentsystemsupportingthisprecisionanalogmicrocontrollerfamily.TheADuCRF101operatesfrom2.2Vto3.6Vandisspecifiedoveranindustrialtemperaturerangeof−40°Cto+85°C.Itisavailableina64-leadLFCSPpackageADuCRF101应用:BatterypoweredwirelesssensorMedicaltelemetrysystemsIndustrialandhomeautomationAssettrackingSecuritysystems(accesssystems)HealthandfitnessapplicationsADuCRF101主要特性和优势:AnalogI/O6-Channel12-bitSARADCSingle-endedanddifferentialinputsProgrammabledatarateupto167kSPSOn-chipvoltagereferenceSupplyrante:2.2Vto3.6VPowerConsumption280nA,inpower-downmode,nonretainedstate1.9µA,inpower-downmode,processormemoryandtransceivermemoryretained210µA/Mhz,Cortex-M3inactivemode12.8mAtransceiverinreceivemode,Cortex-M3inpower-downmode9mAto32mAtransceiverintransmitmode,Cortex-M3inpower-downmodeRFTransceiverFrequencybands,862MHzto928MHzand431MHzto464MHzMultipleConfigurationssupportedReceiversensitivity(BER),−107.5dBmat38.4kbps,2FSKSingleandendedanddifferentialPALowexternalBOMMicrocontroller32-bitARMCortex-M3processorSerialWiredownloadanddebugExternalWatchcrystalforwakeuptimer16MHzinternalOscillatorwith8-wayProgrammableDividerMemory128kBFlash/EEmemory,16kBSRAM10,000-cycleFlash/EEendurance10-yearFlash/EEretentionIn-circuitdownloadviaserialwireandUARTOn-ChipPeripheralsUART,I2CandSPISerialI/O28-pinGPIOport2general-purpose,16-bittimers32-bitwake-uptimer16-bitwatchdogtimer8-channelpulse-widthmodulation(PWM)Package64-lead,9mm×9mmLFCSPTemperaturerange:−40°Cto+85°CToolsLowcostdevelopmentsystemThird-partycompilerandemulatortoolsupport图1.ADuCRF101功能框图ADuCRF101迷你评估板TheADuCRF101isafullyintegrateddataacquisitionsolutiondesignedforlowpowerwirelessapplications.Itfeaturesa12-bitADC,alowpowerARMCortex™-M3processor,a431MHzto464MHzand862MHzto928MHzRFtransceiver,andFlash/EEmemory,ina9mm×9mmLFCSPpackage.TheADuCRF101miniboardallowsausertoprogram,debugandevaluatetheperformanceoftheADuCRF101.Itssmallformfactormakesittheidealhardwareforevaluationoflargewirelesssensornetwork.Differenthardwarekitsareavailable,fromaminiboardonitsown,toacombinationofemulatorandboards.SoftwareContents:KeilMDKARMevaluationversionintegratedsoftwaredevelopmenttool.IAREWARMevaluationversionintegratedsoftwaredevelopmenttool.CM3WSDSerialDownloaderExampleCodeFunctionLibrariesGetStartedUserGuideDatasheets,ApplicationNotes,Etc图2.ADuCRF101迷你评估板外形图图3.ADuCRF101迷你评估板电路图(1)图4.ADuCRF101迷你评估板电路图(2)图5.ADuCRF101迷你评估板电路图(3)AO-Electronics傲壹电子官网：中文网：元件布局图:顶层图7.ADuCRF101迷你评估板PCB元件布局图:底层