标签: 唤醒模块

ThisapplicationnotedescribeswaystoreducesystemcurrentconsumptionwiththeuseoftheUltraLow-powerWake-up(ULPWU)module.ThePIC16F684andPIC16F88Xareexamplesofdeviceswiththisfeature.TheprimaryuseofthismoduleisasanULPWUtimer,butitsfunctionalitycanbeexpandedtofunctionasatemperaturesensorand/oralow-voltagedetector.Themainandexpandedfunctionsofthismoduleareexplainedinthisdocument.Manylow-powerapplicationsrequirethatthemicroprocessorwake-upfromaSleepstateonaperiodicbasistocheckthestatusofsomesignal.ItcanthenreactbasedonameasurementofthatsignalandgobacktoSleepuntilthenexttimedwake-up.ThisisawidelyusedmethodforreducingoverallsystemAN879UsingtheMicrochipUltraLow-PowerWake-UpModulecurrentconsumption.ThesetypesofapplicationsAuthors:RuanLourensrequirealow-powerperiodicwake-upandcanbeJoseBenevidesaccomplishedbyactivatingalow-powertimerpriortoJonathanDillonplacingthedeviceinaSleepmode.Uponrollover,theMicrochipTechnologyInc.timerinterruptcanthenwake-upthepartaftersome……