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CY7C1471V33 Datasheet(PDF) 9 Page - Cypress Semiconductor

Part # CY7C1471V33
Description  72-Mbit (2 M 횞 36) Flow-Through SRAM with NoBL??Architecture
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C1471V33 Datasheet(HTML) 9 Page - Cypress Semiconductor

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CY7C1471V33
Document Number: 38-05288 Rev. *N
Page 9 of 22
Truth Table for Read/Write
The read-write truth table for CY7C1471V33 follows. [8, 9, 10]
Function
WE
BWA
BWB
BWC
BWD
Read
H
X
X
X
X
Write no bytes written
L
H
H
H
H
Write byte A – (DQA and DQPA)L
L
H
H
H
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
H
H
H
L
Write all bytes
LLL
LL
Notes
8. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. BWX = L signifies at least one byte write select is active, BWX = valid signifies that the desired byte write selects
are asserted, see Truth Table for Read/Write for details.
9. Write is defined by BWX, and WE. See Truth Table for Read/Write.
10. 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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