提高系统可靠性的看门狗 — — 如何选择正确的一部分

摘要：看门狗定时器用于监视和尽量减少代码执行错误。内部看门狗定时器会遵守执行问题的代码，使外部看门狗电路宝贵在防止系统锁定。

Maxim>AppNotes>AUTOMOTIVEMICROPROCESSORSUPERVISORCIRCUITSKeywords:watchdogtimer,watchdogcircuit,windowed,reset,adjustablewatchdog,capacitoradjustableMar13,2003watchdogAPPLICATIONNOTE1926WatchdogsImproveSystemReliability―HowtoChoosetheRightPartAbstract:Watchdogtimersareusedtomonitorandminimizecodeexecutionerrors.Internalwatchdogtimersaresubjecttocodeexecutionproblems,makingexternalwatchdogcircuitsinvaluableinpreventingsystemlockup.Thisdocumentprovidesassistanceinselectingtherighttimeofwatchdog/supervisoryproductfordifferenttypeofapplicationsandhowtoapplythecircuitwithoutthesoftwarecode.Manycircuitfunctionspreviouslyrealizedwithdedicatedhardwarearenowimplementedinsoftware,du