所需E币: 4
时间: 2019-12-24 21:21
大小: 240.07KB
ThisapplicationnotedescribesthemethodologytousetheParallelMasterPort(PMP)moduletointerfacewithexternaldatamemory;eitherexternalFlashorexternalRAM.ThisapplicationnotealsoliststheAPIsanddescribeshowtoimplementdifferenttypesofinterfaces.UsingthePMPmodule,thememorydeviceswith64Klocations(KbytesorKwords)canbeinterfacedwithnoextraI/Osandsoftware.Thisapplicationnotedescribeshowtointerfacethememorydeviceswithmorethan64KlocationsusingsomeI/OpinsandprovidestherequiredAPIs.Thisapplicationnotedescribesthefollowingtopics:•“ExternalDataMemoryInterfaceOverview”•“FunctionalImplementation”•“ExpansionOfExternalMemory”•“ReferenceCode”AN1210UsingExternalDataMemorywithPIC24F/24H/dsPIC33FDevicesAuthor:VidyadharVivekanandaSignalsRequiredforInterfacingMemoryMicrochipTechnologyInc.DevicesTable1providesthesignalsrequiredtointerfaceINTRODUCTIONdifferenttypesofmemorydevices.ThisapplicationnotedescribesthemethodologytousetheParallelMasterPort(PMP)moduletointerfacewithTABLE1:TYPICALMEMORYDEVICEexternaldatamemory;eitherexternalFlashorexternalINTE……