FM25Q64ꢀ
ꢀ
11.2.25ꢀJEDECꢀIDꢀ(9Fh)ꢀ
Forꢀcompatibilityꢀreasons,ꢀtheꢀFM25Q32ꢀprovidesꢀseveralꢀinstructionsꢀtoꢀelectronicallyꢀdetermineꢀ
theꢀidentityꢀofꢀtheꢀdevice.ꢀTheꢀReadꢀJEDECꢀIDꢀinstructionꢀisꢀcompatibleꢀwithꢀtheꢀJEDECꢀstandardꢀ
forꢀSPIꢀcompatibleꢀserialꢀmemoriesꢀthatꢀwasꢀadoptedꢀinꢀ2003.ꢀTheꢀinstructionꢀisꢀinitiatedꢀbyꢀdrivingꢀ
theꢀ /CSꢀ pinꢀ lowꢀ andꢀ shiftingꢀ theꢀ instructionꢀ codeꢀ “9Fh”.ꢀ Theꢀ instructionꢀ JEDECꢀ assignedꢀ
Manufacturerꢀ IDꢀ byteꢀ forꢀ FIDELIXꢀ SEMICONDUCTOR(F8h)ꢀ andꢀ twoꢀ Deviceꢀ IDꢀ bytes,ꢀ Memoryꢀ
Type(IDꢁ15ꢁID8)ꢀandꢀCapacityꢀ(ID7ꢁID0)ꢀareꢀthenꢀshiftedꢀoutꢀonꢀtheꢀfallingꢀedgeꢀofꢀCLKꢀwithꢀmostꢀ
significantꢀ bitꢀ (MSB)ꢀ firstꢀ shownꢀ inꢀ figureꢀ 25.ꢀ Forꢀ memoryꢀ typeꢀ andꢀ capacityꢀ valuesꢀ referꢀ toꢀ
Manufacturerꢀ andꢀ Deviceꢀ Identificationꢀ table.ꢀ Theꢀ JEDECꢀ IDꢀ canꢀ beꢀ readꢀ continuously.ꢀ Theꢀ
instructionꢀisꢀcompletedꢀbyꢀdriving/CSꢀhigh.ꢀ
ꢀ
ꢀ
/CS
Modeꢀ3
Modeꢀ0
0
1
2
3
4
5
6
7
8
9
10 11
12 13
14
15
CLK
Instructionꢀ(9Fh)
HighꢀImpedance
DI
ManufacturerꢀID (
)
F8h
DO
/CS
16
17
18 19
20 21
22
23
24 25
26 27
28
29
30 31
32
Modeꢀ3
Modeꢀ0
CLK
DI
MemoryꢀTypeꢀIDꢀ15ꢁID8
CapacityꢀID7ꢁID0
DO
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
=ꢀMSB
*
ꢀ
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Figureꢀ25.ꢀReadꢀJEDECꢀIDꢀ
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preliminary(Aug.18.2010)ꢀ ꢀ ꢀ ꢀ
43ꢀ
FIDELIX [ FIDELIX ]
