所需E币: 4
时间: 2019-12-28 23:46
大小: 41.5KB
MostDallasSemiconductorreal-timeclocks(RTCs)includeasupplyinputforabackuppowersource.ThisalternatesupplysourceallowstheRTCtomaintainthecurrenttimeanddatewhilethemainpowersourceisabsent.Thisapplicationnotediscussesthevarioustypesofalternatesuppliesthatcanbeused,aswellassomeofthecriteriaadesignershouldconsiderwhenselectingabackupsource.……
标签: eal-time
