LPC1200系列微控制器产品数据手册(英).pdf

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1、LPC122x32-bitARMCortex-M0microcontroller;upto128kBflashand8kBSRAMRev.1.1—21February2011Objectivedatasheet1.GeneraldescriptionTheLPC122xextendNXP's32-bitARMmicrocontrollercontinuumandtargetawiderangeofindustrialapplicationsintheareasoffactoryandhomeautomation.Benefitting

2、fromtheARMCortex-M0Thumbinstructionset,theLPC122xhaveupto50%highercodedensitycomparedtocommon8/16-bitmicrocontrollerperformingtypicaltasks.TheLPC122xalsofeatureanoptimizedROM-baseddividelibraryforCortex-M0,whichoffersseveraltimesthearithmeticperformanceofsoftware-basedl

3、ibraries,aswellashighlydeterministiccycletimecombinedwithreducedflashcodesize.TheARMCortex-M0efficiencyalsohelpstheLPC122xachieveloweraveragepowerforsimilarapplications.TheLPC122xoperateatCPUfrequenciesofupto45MHz.Theyofferawiderangeofflashmemoryoptions,from32kBto128kB.

4、Thesmall512-bytepageeraseoftheflashmemorybringsmultipledesignbenefits,suchasfinerEEPROMemulation,boot-loadsupportfromanyserialinterfaceandeaseofin-fieldprogrammingwithreducedon-chipRAMbufferrequirements.TheperipheralcomplementoftheLPC122xincludesa10-bitADC,twocomparator

5、swithoutputfeedbackloop,twoUARTs,oneSSP/SPIinterface,oneI2C-businterfacewithFast-modePlusfeatures,aWindowedWatchdogTimer,aDMAcontroller,aCRCengine,fourgeneralpurposetimers,a32-bitRTC,a1%internaloscillatorforbaudrategeneration,andupto55GeneralPurposeI/O(GPIO)pins.2.Featu

6、resandbenefitsProcessorcoreARMCortex-M0processor,runningatfrequenciesofupto45MHz(onewaitstatefromflash)or30MHz(zerowaitstatesfromflash).TheLPC122xhaveahighscoreofover45inCoreMarkCPUperformancebenchmarktesting,equivalentto1.51/MHz.ARMCortex-M0built-inNestedVectoredInt

7、erruptController(NVIC).SerialWireDebug(SWD).Systemticktimer.MemoryUpto8kBSRAM.Upto128kBon-chipflashprogrammingmemory.In-SystemProgramming(ISP)andIn-ApplicationProgramming(IAP)viaon-chipbootloadersoftware.IncludesROM-based32-bitintegerdivisionroutines.Clockgenera

8、tionunitNXPSemiconductorsLPC122x32-bitARMCortex-M0microcontrollerCrystaloscillatorwithanoperatingrangeof1MHzt