內(nèi)嵌電源管理的實時時鐘芯片的研究與設計.pdf

1、華中科技大學碩士學位論文內(nèi)嵌電源管理的實時時鐘芯片的研究與設計姓名：曾勁申請學位級別：碩士專業(yè)：微電子學與固體電子學指導教師：鄒雪城20070128IIAbstractRealTimeClockplaysaveryimptantroleinvarietyofapplicationsystem.Itprovidesaexacttimereferenceimplementstimekeepingdelaycontrolwksasacount

2、erstampeventinthesystem.AsaRTCshouldwkuninterruptedlyaBatteyBackupmechanismisusuallyequippedtomakesurethetimeisgoonwhenthemainpowersupplyisoff.InthisthesisaRTCchipusedinconsumptiveelectronicsatthesametimetheaccessfromthe

3、bustointernalregistersisstopedtopreventthetimingdata.WhenthebackuppoweriswkingtheRTCentresthemodeofultralowpowerwhilethesystempowerisonagainthechipcomesbacktowkdinarily.Asthewholechiphasonly8pinsitisveryapplicableinthelo

4、wpowerconsumptiveelectronicsfield.ThischipisaMixedsignalIC.Inthewholedesignweusea“topdown”designmethodcombinedwitha“downtop”designmethod.Inourprojectthelogicspicesimulationofeverymodulethewholesystemhavefinishedcrectly.t

5、hewholelayoutdesignverificationwasaccomplishedsubsequently.Thesemeasurementsassuredcrectdesignofourchip.Thelastdesignresultcompletedaccdwiththedesignspecification.Keywds:IICprotocolPowermanagementcrystaloscillatclockcale