标签: backup

BackupofSheet1.xls

高速计数backup

DeviceNetWarmBackup

ControlNetwarmbackup

Supercapacitors(orultracapacitors)arefindingtheirwayintoanincreasingnumberofapplicationsforshort-termenergystorageandapplicationsthatrequireintermittenthighenergypulses.Onesuchapplicationisapowerridethroughcircuit,inwhichabackupenergysourcecutsinandpowerstheloadifthemainpowersupplyfailsforashorttime.Thistypeofapplicationhastypicallybeendominatedbybatteries,butelectricdoublelayercapacitors(EDLCs)arefastmakinginroadsastheirprice-per-farad,sizeandeffectiveseriesresistancepercapacitance(ESR/C)continuetodecrease.SupercapacitorsCanReplaceaBackupBatteryforPowerRide-ThroughApplicationsDesignNote450JimDrewIntroductionSupercapacitorCharacteristicsSupercapacitors(orultracapacitors)arendingtheirwayA10F,2.7Vsupercapacitorisavailableina10mm×intoanincreasingnumberofapplicationsforshort-term30mm2-terminalradialcanwithanESRof25mΩ.Oneenergystorageandapplicationsthatrequireintermittentadvantagesupercapacitorsofferoverbatteriesistheirhighenergypulses.Onesuchapplicationisapowerride-longlifetime.Acapacitor’scyclelifeisquotedasgreaterthroughcircuit,inwhichabackupenergysourcec……

磁盘冗余阵列，或者称作RAID，是设计用于在不利的环境下保护数据的技术。为保护数据，许多系统备份电源采用电池供电，FLASH的出现带来了高密度、低功耗和快速写入时间等优势。随着超级电容技术的提升和单位体积上电容量的增加，采用超级电容替代电池已成为可能。Supercapacitor-BasedPowerBackupPreventsDataLossinRAIDSystems……

本应用笔记的目的是协助用户在应用中实现实时时钟的的设计。UM10301UserManualforNXPRealTimeClocksPCF85x3,PCA8565andPCF2123,PCA2125Rev.01―23December2008UsermanualDocumentinformationInfoContentKeywordsPCF8563,PCF8573,PCF8583,PCF8593,PCA8565,PCF2123,PCA2125,PCF2120,RTC,realtimeclock,timekeeping,crystal,32.768kHz,backup.AbstractThisapplicationnoteaimstoassistauserofabovementionedRealTimeClocksinachievingsuccesfuldesign-inandapplication.ItcontainsusefulhintswithrespecttoelectricalschematicandPCBlayoutaswellascodeexamplesforthewellestablishedNXP……

摘要：许多高可靠性的系统保持了他们的快闪记忆体的备份副本应该成为一个新的软件下载任何原因而无法使用。本应用笔记介绍了DS4510，DS4520，DS4550非易失性的I/O扩展，可以用来选择适当的系统上电的闪存页。Maxim/Dallas>AppNotes>GENERALENGINEERINGTOPICSMEMORYMISCELLANEOUSCIRCUITSSWITCHESANDMULTIPLEXERSKeywords:flash,flashmemory,backup,non-volatileI/OJul28,2004APPLICATIONNOTE3291UsingDS4510/DS4520/DS4550toSelectBackupFlashMemoryManyhigh-reliabilitysystemsmaintainabackupcopyoftheirflashmemoryshouldanewsoftwaredownloadbecomeunusableforanyreason.ThisapplicationnotedescribeshowtheDS4510,DS4520,andDS4550non-volatileI/Oexpanderscanbeusedtoselecttheproperpageofflashmemoryonsystempower-up.TheDS4510,DS4520,andDS4550areaseriesofnonvolatileI/Oexpanders.Sincetheyretaintheirprogrammedoutputvalueswhenthesystemispowereddown,theycanbeusedtose……

摘要：了解µP主管来确保适当的系统操作期间通电、电源关闭和灯火情况（欠压监控）的价值。此外，提供有关过电压和窗口的监测信息。描述手动重置、看门狗定时器、备用电池和芯片启用浇注等附加功能。讨论需要多电压监测。Maxim>AppNotes>AUTOMOTIVEMICROPROCESSORSUPERVISORCIRCUITSKeywords:POR,poweronreset,uPreset,uPsupervisors,voltagemonitor,resettimeout,undervoltage,Sep01,2000overvoltage,monitoring,windowedreset,batterybackup,watchdogcircuit,microprocessorsupervisorsAPPLICATIONNOTE279SupervisoryCircuitsKeepYourMicroprocessorUnderControlAbstract:UnderstandthevalueofaPsupervisortoensurepropersystemoperationduringpower-up,power-down,andbrownoutsituations(undervoltagemonitoring).Inaddition,providesinformationaboutovervoltageandwindowedmonitoring.Describesadditionalfeaturessuchasmanualreset,watchdogtimer,batterybackup,andchipenablegating.Discussestheneedformulti-voltagemonitoring.Microprocessor-superviso……

摘要：本应用笔记讨论了电路的切换，而无需切换噪声的MAX6326电源效率。它讨论了一个简单的二极管条例方法使用这种技术的优点。Maxim>Designsupport>Appnotes>Automotive>APP1136Maxim>Designsupport>Appnotes>MicroprocessorSupervisorCircuits>APP1136Keywords:batterybackup,powerswitching,externalpowersources,batteryswitchover,switchoverJun27,2002APPLICATIONNOTE1136SwitchingBetweenBatteryandExternalPowerSourcesAbstract:ThefollowingapplicationnotediscussesacircuitthatswitchespowersourcesefficientlywithoutswitchingnoiseusingtheMAX6326.Itdiscussestheadvantagesofusingthistechniqueoverasimplediode-ordmethod.AsimilarversionofthisarticleappearedintheMay13,2002issueofElectronicDesignmagazine.Portableequipmentth……

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：本电源序感官的亏损主电源电压，并通过控制两个场效应管，自动负载切换到辅助（备份）供应。Maxim>AppNotes>BATTERYMANAGEMENTPOWER-SUPPLYCIRCUITSKeywords:backupsupply,batteryoperation,diode-OR,MOSFET,power-supplysequencingJul25,2006APPLICATIONNOTE3864TheFET-ORConnectionforPowerSuppliesAbstract:Thispower-supplysequencersensesalossofthemainsupplyvoltageand,bycontrollingthetwoFETs,automaticallyswitchestheloadtothesecondary(backup)supply.TheFigure1circuitprovidesa"diode-OR"functionforapplicationsthatmustswitchautomaticallybetweenthemainandbackupsupplyvoltages.Suchapplicationsincludebattery-backedmemorysuppliesandanybattery-operateddevicewithawall-adapterconnection.Figure1.Thispower-supplysequencersensesalossofthemainsupplyvoltageand,bycontrollingth……

SeveralDallasSemiconductorreal-timeclocks(RTCs)integrateavoltage-regulatedtricklecharger,suitableforchargingamanganese-dioxidelithium(ML)coincell.ThedepthofdischargeduringuseaffectstheservicelifeofaMLcell.Thisapplicationnotediscusseshowtocalculatetheapproximatecelllife,baseduponcellcapacity,load,anddepthofdischarge.……

摘要：许多高可靠性的系统保持了他们的快闪记忆体的备份副本应该成为一个新的软件下载任何原因而无法使用。本应用笔记介绍了DS4510，DS4520，DS4550非易失性的I/O扩展，可以用来选择适当的系统上电的闪存页。Maxim/Dallas>AppNotes>GENERALENGINEERINGTOPICSMEMORYMISCELLANEOUSCIRCUITSSWITCHESANDMULTIPLEXERSKeywords:flash,flashmemory,backup,non-volatileI/OJul28,2004APPLICATIONNOTE3291UsingDS4510/DS4520/DS4550toSelectBackupFlashMemoryManyhigh-reliabilitysystemsmaintainabackupcopyoftheirflashmemoryshouldanewsoftwaredownloadbecomeunusableforanyreason.ThisapplicationnotedescribeshowtheDS4510,DS4520,andDS4550non-volatileI/Oexpanderscanbeusedtoselecttheproperpageofflashmemoryonsystempower-up.TheDS4510,DS4520,andDS4550areaseriesofnonvolatileI/Oexpanders.Sincetheyretaintheirprogrammedoutputvalueswhenthesystemispowereddown,theycanbeusedtose……