FM25Q64ꢀ
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11.2.24ꢀReadꢀManufacturer/ꢀDeviceꢀIDꢀ(90h),(EFh),(DFh)ꢀ
TheꢀReadꢀManufacturer/ꢀDeviceꢀIDꢀinstructionꢀisꢀanꢀalternativeꢀtoꢀtheꢀReleaseꢀfromꢀPowerꢁdownꢀ/ꢀ
Deviceꢀ IDꢀ instructionꢀ thatꢀ providesꢀ bothꢀ theꢀ JEDECꢀ assignedꢀ manufacturerꢀ IDꢀ andꢀ theꢀ specificꢀ
deviceꢀID.ꢀ
TheꢀReadꢀManufacturer/ꢀDeviceꢀIDꢀinstructionꢀisꢀveryꢀsimilarꢀtoꢀtheꢀReleaseꢀfromꢀPowerꢁdownꢀ/ꢀ
Deviceꢀ IDꢀ instruction.ꢀ Theꢀ instructionꢀ isꢀ initiatedꢀ byꢀ drivingꢀ theꢀ /CSꢀ pinꢀ lowꢀ andꢀ shiftingꢀ theꢀ
instructionꢀcodeꢀ“90h”ꢀorꢀ“EFh”ꢀorꢀ“DFh”ꢀfollowedꢀbyꢀaꢀ24ꢁbitꢀaddressꢀ(A23ꢁA0)ꢀofꢀ000000h.ꢀAfterꢀ
which,ꢀtheꢀManufacturerꢀIDꢀforꢀFIDELIXꢀSEMICONDUCTORꢀ(F8h)ꢀandꢀtheꢀDeviceꢀIDꢀareꢀshiftedꢀ
outꢀonꢀtheꢀfallingꢀedgeꢀofꢀCLKꢀwithꢀmostꢀsignificantꢀbit(MSB)ꢀfirstꢀasꢀshownꢀinꢀfigureꢀ24a,ꢀ24bꢀorꢀ
24c.ꢀTheꢀDeviceꢀIDꢀvalueꢀforꢀtheꢀFM25Q32ꢀisꢀlistedꢀinꢀManufacturerꢀandꢀDeviceꢀIdentificationꢀtable.ꢀ
Ifꢀtheꢀ24ꢁbitꢀaddressꢀisꢀinitiallyꢀsetꢀtoꢀ000001hꢀtheꢀDeviceꢀIDꢀwillꢀbeꢀreadꢀfirstꢀandꢀthenꢀfollowedꢀbyꢀ
theꢀManufacturerꢀID.ꢀTheꢀManufacturerꢀandꢀDeviceꢀIDsꢀcanꢀbeꢀreadꢀcontinuously,ꢀalternatingꢀfromꢀ
oneꢀtoꢀtheꢀother.ꢀTheꢀinstructionꢀisꢀcompletedꢀbyꢀdriving/CSꢀhigh.ꢀ
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Figureꢀ24a.ꢀReadꢀManufacturer/ꢀDeviceꢀIDꢀDiagramꢀ
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preliminary(Aug.18.2010)ꢀ ꢀ ꢀ ꢀ
40ꢀ
FIDELIX [ FIDELIX ]
