标签: warning

大多数基于微处理器的系统，以确保正确的操作，需要在上电和掉电的监督，并在进入或退出关机或休眠模式。主管可能只提供了一个上电复位，或它可以提供额外的功能，如备份电池管理，存储器写保护，低线的预警，或软件看门狗（图1）。Maxim>AppNotes>AutomotiveMicroprocessorSupervisorCircuitsKeywords:microprocessorsupervisor,batterybackup,falsereset,poweronreset,powergoodcircuit,resetcircuit,earlywarning,sleepmode,uPsupervisor,Mar13,2000microprocessor,supervisory,supervisorICsAPPLICATIONNOTE655SupervisorICsMonitorBattery-PoweredEquipmentToensurecorrectoperation,mostmicroprocessor-basedsystemsrequiresupervisionduringpower-upandpower-down,andwhenenteringorexitingshutdownorsleepmode.Thesupervisormayonlyprovideapower-onreset,oritmayofferadditionalfunctions,suchasbackup-batterymanagement,memory-writeprotection,low-lineearlywarning,orasoftwarewatchdog(Figure1).Figure1.Afeature-ladenPsupervisor(IC1),withtheh……

摘要：一个安全的USB“垂死的喘息”关机需要一个本地的储能电容，电源设备，并延长运作有序关闭。一个5VUSB“垂死的喘息”应用程序中的电路提供电源失效输出一个2.88ms的预警时间。特色的MAX1970/MAX1972降压与PFO的监管。Maxim>AppNotes>BatteryManagementPower-SupplyCircuitsKeywords:dyinggasp,USB,power-failwarning,power-failoutput,PFO,PFOthreshold,DC-DCconverter,DC-DCconverterefficiency,Dec18,2001energystoragecapacitor,step-downregulatorAPPLICATIONNOTE891Dual1.4MHzSynchronousBuckRegulatorSupportsUSBDyingGaspApplicationsAbstract:AsafeUSB"dyinggasp"shutdownrequiresalocalenergystoragecapacitortopowerthedeviceandprolongoperationfororderlyshutdown.Acircuitfora5VUSB"dyinggasp"applicationprovidesapower-failoutputwarningtimeof2.88ms.TheMAX1970/MAX1972step-downregulatorswithPFOarefeatured.Manyportableuniversalserialbus(USB)devicesarepoweredfromtheUSBport.Mostofthesedevicesneedapowerfailwarningto……

摘要：利用热电发电机（TEG）检测表面温度和升压开关稳压器，一个有用的水平提高甘醇输出，报警电路，闪烁的高亮度发光二极管的表面温度超过阈值时。Maxim>AppNotes>CircuitProtectionKeywords:hot-surfacewarning,SeebeckEffect,stepupswitchingregulator,boostregulator,thermoelectricgenerator,TEG,high-Dec06,2010brightnessLEDs,HBLEDsAPPLICATIONNOTE4535Hot-SurfaceWarningLightRequiresNoExternalPowerAbstract:Usingathermoelectricgenerator(TEG)tosensethetemperatureofasurfaceandastep-upswitchingregulatortoboosttheTEGoutputtoausefullevel,thiswarningcircuitflashesahigh-brightnessLEDwhenthesurfacetemperatureexceedsathreshold.AsimilarversionofthisarticleappearedintheFebruary4,2008issueofMachineDesignmagazine.Becauseahot-surfacewarninglightaffectspersonnelsafety,itmustoperatereliablywheneverthesurfaceishot.Heat,however,complicatesth……

QuartusII编译与仿真之warning大解析,QuartusII编译与仿真之warning大解析……