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CY7C1461AV25
CY7C1463AV25
CY7C1465AV25
Document #: 38-05355 Rev. *E
Page 11 of 29
Truth Table for Read/Write[2, 3, 9]
Function (CY7C1461AV25)
WE
BWA
BWB
BWC
BWD
Read
H
XXXX
Write No bytes written
L
HHHH
Write Byte A – (DQA and DQPA)
L
L
HHH
Write Byte B – (DQB and DQPB)L
H
L
H
H
Write Byte C – (DQC and DQPC)L
H
H
L
H
Write Byte D – (DQD and DQPD)
L
HHH
L
Write All Bytes
LLLL
L
Truth Table for Read/Write[2, 3, 9]
Function (CY7C1463AV25)
WE
BWB
BWA
Read
H
X
X
Write – No Bytes Written
L
H
H
Write Byte a – (DQa and DQPa)L
H
L
Write Byte b – (DQb and DQPb)L
L
H
Write Both Bytes
L
L
L
Truth Table for Read/Write[2, 3, 9]
Function (CY7C1465AV25)
WE
BWX
Read
HX
Write – No Bytes Written
L
H
Write Byte X
− (DQ
x and DQPx)
LL
Write All Bytes
L
All BW = L
Note:
9. Table only lists 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.
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