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STLSM303AGR超小型高性能电子罗盘3D评估方案时间：2016-05-1810:21:54作者：ST来源：中电网ST公司的LSM303AGR是超小型高性能系统封装电子罗盘eCompass模块,集成了3D数字线性加速度传感器和3D数字磁传感器,以及支持标准,快模式,快模式+和高速(100kHz,400kHz,1MHz和3.4MHz)I2C串行接口和SPI串行标准接口.主要用在倾斜补偿指南针,地图旋转,位置检测,运动激活和自由落体检测.本文介绍了LSM303AGR主要特性,框图和电连接图,以及LSM303AGR适配板STEVAL-MKI172V1主要特性,电路图和材料清单.TheLSM303AGRisanultra-low-powerhighperformancesystem-in-packagefeaturinga3Ddigitallinearaccelerationsensoranda3Ddigitalmagneticsensor.TheLSM303AGRhaslinearaccelerationfullscalesof±2g/±4g/±8g/16gandamagneticfielddynamicrangeof±50gauss.TheLSM303AGRincludesanI2Cserialbusinterfacethatsupportsstandard,fastmode,fastmodeplus,andhigh-speed(100kHz,400kHz,1MHz,and3.4MHz)andanSPIserialstandardinterface.Thesystemcanbeconfiguredtogenerateaninterruptsignalforfree-fall,motiondetectionandmagneticfielddetection.Themagneticandaccelerometerblockscanbeenabledorputintopower-downmodeseparately.TheLSM303AGRisavailableinaplasticlandgridarraypackage(LGA)andisguaranteedtooperateoveranextendedtemperaturerangefrom-40℃to+85℃.LSM303AGR主要特性:3magneticfieldchannelsand3accelerationchannels±50gaussmagneticdynamicrange±2/±4/±8/16gselectableaccelerationfullscales16-bitdataoutputSPI/I2CserialinterfacesAnalogsupplyvoltage1.71Vto3.6VSelectablepowermode/resolutionforaccelerometerandmagnetometerSinglemeasurementmodeformagnetometerProgrammableinterruptgeneratorsforfreefall,motiondetectionandmagneticfielddetectionEmbeddedself-testEmbeddedtemperaturesensorEmbeddedFIFOECOPACK®,RoHSand“Green”compliantLSM303AGR应用:Tilt-compensatedcompassesMaprotationPositiondetectionMotion-activatedfunctionsFree-falldetection图1.LSM303AGR框图图2.LSM303AGR电连接图标准DIL24插座LSM303AGR适配板STEVAL-MKI172V1TheSTEVAL-MKI172V1isanadapterboarddesignedtofacilitatetheevaluationofMEMSdevicesintheLSM303AGRproductfamily.Theboardoffersaneffectivesolutionforfastsystemprototypinganddeviceevaluationdirectlywithintheuser’sownapplication.TheSTEVAL-MKI172V1canbepluggedintoastandardDIL24socket.TheadapterprovidesthecompleteLSM303AGRpinoutandcomesready-to-usewiththerequireddecouplingcapacitorsontheVDDpowersupplyline.ThisadapterissupportedbytheSTEVAL-MKI109V2motherboardwhichincludesahighperformance32-bitmicrocontrollerfunctioningasabridgebetweenthesensorandaPC,onwhichitispossibletousethedownloadablegraphicaluserinterface(UnicoGUI),ordedicatedsoftwareroutinesforcustomizedapplications.LSM303AGR适配板STEVAL-MKI172V1主要特性:CompleteLSM303AGRpinoutforastandardDIL24socketFullycompatiblewiththeSTEVAL-MKI109V2motherboardRoHScompliant图3.LSM303AGR适配板STEVAL-MKI172V1外形图图4.LSM303AGR适配板STEVAL-MKI172V1电路图LSM303AGR适配板STEVAL-MKI172V1材料清单:AO-Electronics傲壹电子官网：中文网：