CY7C1471V33
CY7C1473V33
CY7C1475V33
Document #: 38-05288 Rev. *J Page 12 of 32
Truth Table for Read/Write
The read-write truth table for CY7C1471V33 follows.[2, 3, 9]
Function WE BWABWBBWCBWD
Read H X X X X
Write No bytes written LHHHH
Write Byte A – (DQA and DQPA) LLHHH
Write Byte B – (DQB and DQPB)LHLHH
Write Byte C – (D QC and DQPC)LHHLH
Write Byte D – (D QD and DQPD) LHHHL
Write All Bytes L L L L L
Truth Table for Read/Write
The read-write truth table for CY7C1473V33 follows.[2, 3, 9]
Function WE BWbBWa
Read H X X
Write – No Bytes Written L H H
Write Byte a – (DQa and DQPa)LHL
Write Byte b – (DQb and DQPb)LLH
Write Both Bytes L L L
Truth Table for Read/Write
The read-write truth table for CY7C1475V33 follows.[2, 3, 9]
Function WE BWx
Read HX
Write – No Bytes Written L H
Write Byte X − (DQx 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 is based on which byte write is active.
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