CY7C1484V33 データシートの表示（PDF） - Cypress Semiconductor
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CY7C1484V33 Datasheet PDF : 26 Pages
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CY7C1484V33
CY7C1485V33
Truth Table for Read/Write
The following is the Truth Table for Read/Write for the CY7C1484V33/CY7C1485V33/.[5, 8]
Function (CY7C1484V33)
Read
Read
Write Byte A – (DQA and DQPA)
Write Byte B – (DQB and DQPB)
Write Bytes B, A
Write Byte C – (DQC and DQPC)
Write Bytes C, A
Write Bytes C, B
Write Bytes C, B, A
Write Byte D – (DQD and DQPD)
Write Bytes D, A
Write Bytes D, B
Write Bytes D, B, A
Write Bytes D, C
Write Bytes D, C, A
Write Bytes D, C, B
Write All Bytes
Write All Bytes
GW
BWE
BWD
BWC
H
H
X
X
H
L
H
H
H
L
H
H
H
L
H
H
H
L
H
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
L
H
L
L
L
H
L
L
L
H
L
L
L
L
X
X
X
Function (CY7C1485V33)
Read
Read
Write Byte A – (DQA and DQPA)
Write Byte B – (DQB and DQPB)
Write All Bytes
Write All Bytes
GW
BWE
H
H
H
L
H
L
H
L
H
L
L
X
BWB
X
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
X
BWB
X
H
H
L
L
X
BWA
X
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
X
BWA
X
H
L
H
L
X
Note
8. Table lists only a partial listing of the byte write combinations. Any combination of BWX is valid. Appropriate write will be done based on which byte write is active.
Document #: 38-05285 Rev. *G
Page 9 of 26
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