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Stellaris®LM3S9U81MicrocontrollerDATASHEETCopyright©2007-2012TexasInstrumentsIncorporatedDS-LM3S9U81-11425TEXASINSTRUMENTS-PRODUCTIONDATA芯天下--©2007-2012TexasInstrumentsIncorporatedAllrightsreserved.StellarisandStellarisWare®areregisteredtrademarksofTexasInstrumentsIncorporated.ARMandThumbareregisteredtrademarksandCortexisatrademarkofARMLimited.Othernamesandbrandsmaybeclaimedasthepropertyofothers.PRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsofTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.TexasInstrumentsIncorporated108WildBasin,Suite350Austin,TX78746://芯天下--(TPIU).....................................................................................682.2.4Cortex-M3SystemComponentDetails...........................................................................682.3ProgrammingModel......................................................................................................692.3.1ProcessorModeandPrivilegeLevelsforSoftwareExecution...........................................692.3.2Stacks..........................................................................................................................692.3.3RegisterMap................................................................................................................702.3.4RegisterDescriptions................................................................................................