CY7C1483V33 データシートの表示（PDF） - Cypress Semiconductor
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CY7C1483V33 Datasheet PDF : 30 Pages
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CY7C1481V33
CY7C1483V33
CY7C1487V33
Truth Table for Read/Write
The read-write truth table for CY7C1481V33 follows.[3, 8]
Function
GW
Read
H
Read
H
Write Byte A (DQA, DQPA)
H
Write Byte B(DQB, DQPB)
H
Write Bytes A, B (DQA, DQB, DQPA, DQPB)
H
Write Byte C (DQC, DQPC)
H
Write Bytes C, A (DQC, DQA, DQPC, DQPA)
H
Write Bytes C, B (DQC, DQB, DQPC, DQPB)
H
Write Bytes C, B, A (DQC, DQB, DQA, DQPC, DQPB, DQPA)
H
Write Byte D (DQD, DQPD)
H
Write Bytes D, A (DQD, DQA, DQPD, DQPA)
H
Write Bytes D, B (DQD, DQA, DQPD, DQPA)
H
Write Bytes D, B, A (DQD, DQB, DQA, DQPD, DQPB, DQPA)
H
Write Bytes D, B (DQD, DQB, DQPD, DQPB)
H
Write Bytes D, B, A (DQD, DQC, DQA, DQPD, DQPC, DQPA)
H
Write Bytes D, C, A (DQD, DQB, DQA, DQPD, DQPB, DQPA)
H
Write All Bytes
H
Write All Bytes
L
Truth Table for Read/Write
The read-write truth table for CY7C1483V33 follows.[3, 8]
Function
GW
Read
H
Read
H
Write Byte A - (DQA and DQPA)
H
Write Byte B - (DQB and DQPB)
H
Write All Bytes
H
Write All Bytes
L
Truth Table for Read/Write
The read-write truth table for CY7C1487V33 follows.[3, 8]
Function
GW
Read
H
Read
H
Write Byte x – (DQx and DQPx)
H
Write All Bytes
H
Write All Bytes
L
BWE
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
BWD
X
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
X
BWC
X
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
X
BWB
X
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
X
BWA
X
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
X
BWE
H
L
L
L
L
X
BWE
H
L
L
L
X
BWB
X
H
H
L
L
X
BWA
X
H
L
H
L
X
BWx[9]
X
All BW = H
L
All BW = L
X
Notes
8. Table only lists a partial listing of the byte write combinations. Any combination of BWX is valid. An appropriate write is performed based on which byte write is active.
9. BWx represents any byte write signal BWX.To enable any byte write BWx , a Logic LOW signal must be applied at clock rise. Any number of byte writes can be
enabled at the same time for any given write.
Document #: 38-05284 Rev. *H
Page 11 of 30
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