ADI ADuC7060模拟微控制器开发方案

ADIADuC7060模拟微控制器开发方案关键字：工业控制,过程控制,传感器,数据采集ADI公司的ADuC7060/ADuC7061是低功耗全集成的8kSPS,24位数据采集系统，在单芯片上集成高性能多通道Σ-Δ型模数转换器(ADC)，16位/32位ARM7TDMI®MCU和Flash/EE存储器,包括有4个定时器,高级矢量中断控制器,工作电压2.375V至2.625V，工作温度范围为−40℃至+125℃,主要用在工业自动化和过程控制,智能精密检测系统和4mA至20mA环路智能传感器。本文介绍了ADuC706x系列主要特性,功能框图,模拟框图以及ADuC7060评估板主要特性,电路图,材料清单和PCB元件布局图.TheADuC706xseriesarefullyintegrated,8kSPS,24-bitdataacqui-sitionsystemsincorporatinghighperformancemultichannelsigma-delta(Σ-Δ)analog-to-digitalconverters(ADCs),16-bit/32-bitARM7TDMI®MCU,andFlash/EEmemoryonasinglechip.TheADCsconsistofaprimaryADCwithtwodifferentialpairsorfoursingle-endedchannelsandanauxiliaryADCwithuptosevenchannels.TheADCsoperateinsingle-endedordifferentialinputmode.Asingle-channelbufferedvoltageoutputDACisavailableonchip.TheDACoutputrangeisprogrammabletooneoffourvoltageranges.Thedevicesoperatefromanon-chiposcillatorandaPLLgene-ratinganinternalhighfrequencyclockupto10.24MHz.ThemicrocontrollercoreisanARM7TDMI,16-bit/32-bitRISCmachineofferingupto10MIPSpeakperformance;4kBofSRAMand32kBofnonvolatileFlash/EEmemoryareprovidedonchip.TheARM7TDMIcoreviewsallmemoryandregistersasasinglelineararray.TheADuC706xcontainsfourtimers.Timer1isawake-uptimerwiththeabilitytobringthepartoutofpowersavingmode.Timer2isconfigurableasawatchdogtimer.A16-bitPWMwithsixoutputchannelsisalsoprovided.TheADuC706xcontainsanadvancedinterruptcontroller.Thevectoredinterruptcontroller(VIC)allowseveryinterrupttobeassignedaprioritylevel.ItalsosupportsnestedinterruptstoamaximumlevelofeightperIRQandFIQ.WhenIRQandFIQinterruptsourcesarecombined,atotalof16nestedinterruptlevelsissupported.On-chipfactoryfirmwaresupportsin-circuitserialdownloadviatheUARTserialinterfaceportsandnonintrusiveemulationviatheJTAGinterface.Thepartsoperatefrom2.375Vto2.625Voveranindustrialtemperaturerangeof−0℃to+125℃.ADuC706x系列主要特性:Analoginput/outputDual(24-bit)ADCsSingle-endedanddifferentialinputsProgrammableADCoutputrate(4Hzto8kHz)ProgrammabledigitalfiltersBuilt-insystemcalibrationLowpoweroperationmodePrimary(24-bit)ADCchannel2differentialpairsor4single-endedchannelsPGA(1to512)inputstageSelectableinputrange:±2.34mVto±1.2V30nVrmsnoiseAuxiliary(24-bit)ADC:4differentialpairsor7single-endedchannelsOn-chipprecisionreference(±10ppm/°C)Programmablesensorexcitationcurrentsources200μAto2mAcurrentsourcerangeSingle14-bitvoltageoutputDACMicrocontrollerARM7TDMIcore,16-/32-bitRISCarchitectureJTAGportsupportscodedownloadanddebugMultipleclockingoptionsMemory32kB(16kB×16)Flash/EEmemory,including2kBkernel4kB(1kB×32)SRAMToolsIn-circuitdownload,JTAGbaseddebugLowcost,QuickStart™developmentsystemCommunicationsinterfacesSPIinterface(5Mbps)4-bytereceiveandtransmitFIFOsUARTserialI/OandI2C(master/slave)On-chipperipherals4×general-purpose(capture)timersincludingWake-uptimerWatchdogtimerVectoredinterruptcontrollerforFIQandIRQ8prioritylevelsforeachinterrupttypeInterruptonedgeorlevelexternalpininputs16-bit,6-channelPWMGeneral-purposeinputs/outputsUpto14GPIOpinsthatarefully3.3VcompliantPowerAVDD/DVDDspecifiedfor2.5V(±5%)Activemode:2.74mA(@640kHz,ADC0active)10mA(@10.24MHz,bothADCsactive)PackagesandtemperaturerangeFullyspecifiedfor−40℃to+125℃operation32-leadLFCSP(5mm×5mm)48-leadLFCSPandLQFPDerivatives32-leadLFCSP(ADuC7061)48-leadLQFPand48-leadLFCSP(ADuC7060)ADuC706x系列应用:IndustrialautomationandprocesscontrolIntelligent,precisionsensingsystems,4mAto20mAloop-basedsmartsensors图1.ADuC706x系列功能框图图2.ADuC706x系列模拟框图ADuC7060评估板ThisuserguidereferstotheADuC7060evaluationboard.ThisevaluationboardallowsevaluationoftheADuC7060andADuC7061parts.TheADuC7060isthesupersetoftheADuC706xseries,andallfeaturesoftheADuC7061canbeevaluatedusingtheADuC7060.TheADuC7060containsanARM7TDMIcore,32kBofflash,4kBofSRAM,dual24-bitsigma-delta(Σ-Δ)ADCs,anda12-bitDACaswellasmanyotherfeatures.ThisevaluationboardallowsausertoprogramtheADuC7060viatheJTAGortheUARTinterfaces.TheusermayalsodebugtheirsourcecodethroughtheJTAGinterface.Inthisuserguide,allreferencestothephysicalorientationofcomponentsontheboardaremadewithrespecttoacomponent-sideviewoftheboardwiththeprototypeareaappearinginthebottomoftheboard.Theboardislaidouttominimizecouplingbetweentheanaloganddigitalsectionsoftheboard.Tothisend,thegroundplaneissplitwiththeanalogsectionontheleftsideandadigitalplaneontherightsideoftheboard.Theregulated2.5Vpowersupplyisrouteddirectlytothedigitalsectionandisfilteredbeforebeingroutedintotheanalogsectionoftheboard.ADuC7060评估板主要特性:2-layerPCB(4in.×5in.formfactor)9Vpowersupplyregulatedto3.3Vand2.5Vonboard4-pinUARTheadertoconnecttoRS-232interfacecable20-pinstandardJTAGconnectorDemonstrationcircuit32.768kHzwatchcrystaltodrivethePLLclockADR2801.2VexternalreferencechipReset/download/IRQ0pushbuttonsPowerindicator/general-purposeLEDsAccesstoallADCinputsandDACoutputfromexternalheader;alldeviceportsarebroughtouttoexternalheaderpinsSurface-mountandthrough-holegeneral-purposeprototypeareaFeaturestruenon-intrusiveJTAGemulationandanassembly&C-sourcedebuggingenvironment.HardwareContents....ADuC7060EvaluationBoardmIDAS-LinkJTAGEmulatorUSBCableSerialDownloadCableIn