Seriesofproducts
ARMhasdesignedmanyprocessors,whichcanbedividedintovariousseriesaccordingtothedifferentcoresused.TheseriesdivisionisbasedonARM7,ARM9,ARM10,andARM11cores.Thesuffixnumbers7,9,10,and11indicatedifferentcoredesigns.Ascendingnumbersindicateperformanceandcomplexityimprovements.ARM8wasquicklyreplacedafteritwasdeveloped.
Ineachseries,therearealsomanychangesinmemorymanagement,cacheandTCMprocessorexpansion.ARMcontinuestodofurtherdevelopmentinboththeavailableproductseriesandthedifferentvariantswithineachseries.
Structure
TounderstandaCPU,wemustfirstunderstanditsarchitecture,registerstructureandinstructionstructure.OnlybythoroughlyunderstandingthesethreeaspectscanthisCPUbedistinguishedfromotherdifferenttypesofCPUsandcantrulyusethisCPUfordevelopmentwork.
Choice
InviewofthemanyadvantagesofARMmicroprocessors,withthegradualdevelopmentofembeddedapplicationsathomeandabroad,ARMmicroprocessorswillinevitablygainextensiveattentionandapplications.However,becausetheARMmicroprocessorhasmorethanadozencorestructures,dozensofchipmanufacturers,andtheever-changingcombinationofinternalfunctionconfigurations,itbringscertaindifficultiestodeveloperswhenchoosingasolution.Therefore,theARMchipItisveryimportanttodosomecomparativeresearch.