msp430超低功耗微处理器选型指南

1加入我们的在线社区，网址：™超低功耗微控制器2012年上半年HybridandElectricVehicleSolutionsGuide2011超低功耗是我们的原生优势Ultra-Low-PowerMSP430™Microcontrollers2MSP430™MicrocontrollersMSP430MicrocontrollerDNAMSP430Microcontrollers(MCUs)fromTexasInstruments(TI)are16-bit,RISC-based,mixed-signalprocessorsdesignedspecificallyforultra-low-power.MSP430MCUshavetherightmixofintelligentperipherals,ease-of-use,lowcostandlowestpowerconsumptionforthousandsofapplications–includingyours.TIoffersrobustdesignsupportfortheMSP430MCUplatformalongwithtechnicaldocuments,training,toolsandsoftwaretohelpdesignersdevelopproductsandreleasethemtomarketfaster.Learnmoreatficallyforultra-low-powerapplications.Itsflexibleclockingsystem,multiplelow-powermodes,instantwakeupandintelligentautonomousperipheralsenabletrueultra-low-poweroptimization,dramaticallyextendingbatterylife.FlexibleClockingSystem–TheMSP430MCUclocksystemhastheabilitytoenableanddisablevariousclocksandoscillatorswhichallowthedevicetoentervariouslow-powermodes(LPMs).Theflexibleclockingsystemoptimizesoverallcurrentconsumptionbyonlyenablingtherequiredclockswhenappropriate.MainClock(MCLK)–CPUsourcethatmaybedrivenbytheinternalDigitallyControlledOscillator(DCO)upto25MHzorwithexternalcrystal.AuxiliaryClock(ACLK)–Sourceforindividualperipheralmodulesdrivenbytheinternallow-poweroscillatororexternalcrystal.Sub-MainClock(SMCLK)–SourceforfasterindividualperipheralmodulesthatmaybedrivenbytheinternalDCOupto25MHzorwithexternalcrystal.InstantWakeup–TheMSP430MCUcanwake-upinstantlyfromLPMs.Thisultra-fastwake-upisenabledbytheMSP430MCU’sinternaldigitallycontrolledoscillator(DCO),whichcansourceupto25MHzandbeactiveandstablein1µs.Instantwake-upfunctionalityisimportantinultra-low-powerapplicationssinceitallowsthemicrocontrollertousetheCPUinveryefficientburstsandspendmoretimeinLPMs.Zero-PowerBrown-OutReset(BOR)–TheMSP430MCU’sBORisalwaysenabledandactiveinallmodesofoperation.Thisensuresthemostreliableperformancepossiblewhilemaintainingultra-low-powerconsumption.TheBORcircuitdetectslowsupplyvoltagesandresetsthedevicewhenpowerisappliedorremoved.Thisfunctionalityisespeciallycriticalinbattery-poweredapplications.µsDCOstart-upallowsMSP430-basedsystemstoremaininlow-powermodesforthelongestpossibleinterval–extendingbatterylife.TheDCOisfullyuserprogrammable.KeyFeaturest
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capacitivetouch,meteringmetrology,lowpowerdesignanddebugging400+Ultra-Low-PowerDevices8-MHzto25-MHzCPUSpeed0.5KBto256KBFlash128Bto18KBRAM14to113pins;25+packagestVeryLow-PowerOscillator(VLO)upto20kHzControlACLK-32kHz32.768kHzMCLK100kHz-25MHzCPUandPeripheralsLower-PowerPeripheralsDigitallyControlledOscillatorMultiple-OscillatorClockSystem超低功耗MSP430™微控制器MSP430™微控制器MSP430微控制器的原生优势德州仪器(TI)推出的MSP430微控制器(MCU)是一种基于RISC的16位混合信号处理器，专为满足超低功耗需求而精心设计。MSP430MCU将智能外设、易用性、低成本以及业界最低功耗等优异特性完美结合在一起，能满足数以千计应用的要求，也必然能满足您的需求。TI可为MSP430MCU平台提供强大的设计支持且配套提供技术文档、培训、工具以及软件等，有助于设计人员大幅加速产品的开发与上市进程。更多详情，敬请访问：。主要特性超低功耗(ULP)架构与高度灵活的时钟系统可显著•延长电池使用寿命：0.1μARAM保持模式；1μARTC模式；100μA/MHz。集成型智能外设：众多的高性能模拟与数字外设可•大幅减轻CPU的工作量；简单易用的16位RISCCPU架构，可实现具有业•界领先代码密度的新型应用；完整的产品开发环境，工具起售价仅4.30美元；•增强型程序库有益于多种应用，例如：电容式触•摸、计量方法、低功耗设计和调试。400多款超低功耗器件8MHz至25MHzCPU速度0.5KB至256KB闪存128B至18KBRAM引脚数从14到113不等；可提供的封装型式超过25种超低功耗MSP430MCU专为超低功耗应用而特别设计。其高度灵活的定时系统、多种低功耗模式、即时唤醒以及智能化自主型外设(intelligentautonomousperipheral)不仅可实现真正的超低功耗优化，同时还能大幅延长电池使用寿命。灵活的定时系统－MSP430MCU时钟系统能启用和禁用各种不同的时钟和振荡器，从而使器件能够进入不同的低功耗模式(LPM)。这种高度灵活的定时系统可确保仅在适当的时候启用所需时钟，从而能够显著优化总体流耗。主系统时钟(MCLK)－CPU信号源，可由内部数控振荡器(DCO)驱动（频率最高达25MHz），也可采用外部晶振驱动。辅助时钟(ACLK)－用于各个外设模块的信号源，可由内部低功耗振荡器或外部晶振驱动。多振荡器时钟系统子系统时钟(SMCLK)－用于各个较快速外设模块的信号源，可由内部DCO驱动（频率最高达25MHz），也可采用外部晶振驱动。即时唤醒－MSP430MCU可从低功耗模式(LPM)即时唤醒。这种超高速唤醒功能得益于MSP430MCU的内部数控振荡器(DCO)，其可提供高达25MHz的频率，而且能在1μs的时间内激活并实现稳定工作。即时唤醒功能对超低功耗应用来说非常重要，因为其允许微控制器以非常高效的突发方式来使用CPU，并在更多的时间里处于LPM模式。零功耗欠压复位(BOR)－MSP430MCU的BOR能够在所有操作模式下始终保持启用和工作的状态。这不仅能确保实现最可靠的性能，同时还可保持超低功耗。BOR电路可对电源欠压情况进行检测，并在施加或移除电源时对器件进行复位。此项功能对于电池供电型应用而言尤其重要。超快速的1μsDCO启动使基于MSP430的系统能够尽量长时间地保持低功耗模式，从而延长电池使用寿命。DCO可全面实现用户编程。3加入我们的在线社区，网址：’sLowestPowerMicrocontrollers3MSP430™MicrocontrollerDNAHighlyIntegratedMSP430MCUsarehighlyintegratedandofferawiderangeofhigh-performanceanaloganddigitalperipherals.IntelligentPeripheralsTheMSP430MCUsperipheralshavebeendesignedtoassuremaximumfunctionalityandprovidesystem-levelinterrupts,resetsandbusarbitrationatthelowestpower.Manyperipheralsmayfunctionautonomously,therebyminimizingCPUti