一键开启和关闭的微处理器

摘要：结合低压差（LDO）线性稳压器，具有一个或门产生电路，允许一个单一的按钮来打开和关闭一个基于微处理器的便携式系统。

Maxim/Dallas>AppNotes>CIRCUITPROTECTIONMICROPROCESSORSUPERVISORCIRCUITSKeywords:microprocessor,LDOregulator,microprocessorresetJul19,2004APPLICATIONNOTE3283OneButtonTurnsMicroprocessorOnandOffCombiningalow-dropout(LDO)linearregulatorwithanORgateproducesacircuitthatallowsasinglepushbuttontoturnamicroprocessor-basedportablesystemonandoff.Whenplacingamicroprocessor-basedportabledeviceinyourdeskdrawerforweeksormonths,youshould,ofcourse,turnitofftosavebatterycapacity(unlessitrequirespowertomaintainstorageofvolatiledataortokeepareal-time-clockrunning).Tosaveasmuchpoweraspossible,it'susuallybesttoturnofftheprocessor,itsperipherals,and