CY7C1471BV25_11 CYPRESS [Cypress Semiconductor], CY7C1471BV25_11 Datasheet - Page 13

• Manufacturer Part Number: CY7C1471BV25_11
• Description: 72-Mbit (2 M x 36/4 M x 18/1 M x 72) Flow-Through SRAM with NoBL Architecture
• Manufacturer: CYPRESS [Cypress Semiconductor]

Truth Table for Read/Write
The read-write truth table for CY7C1471BV25 follows.
Truth Table for Read/Write
The read-write truth table for CY7C1473BV25 follows.
Truth Table for Read/Write
The read-write truth table for CY7C1475BV25 follows.
Notes
Document Number: 001-15013 Rev. *H
Read
Write No bytes written
Write Byte A – (DQ
Write Byte B – (DQ
Write Byte C – (DQ
Write Byte D – (DQ
Write All Bytes
Read
Write – No Bytes Written
Write Byte a – (DQ
Write Byte b – (DQ
Write Both Bytes
Read
Write – No Bytes Written
Write Byte X(DQ
Write All Bytes
8. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. BW
9. Write is defined by BW
10. This table is only a partial listing of the byte write combinations. Any combination of BW
are asserted, see
Truth Table for Read/Write on page 13
a
b
x
C
D
B
A
and DQP
and DQP
and DQP
X
and DQP
and DQP
and DQP
and DQP
, and WE. See
Function
Function
Function
a
b
x)
B
C
D
A
)
)
)
)
)
)
Truth Table for Read/Write on page
X
= L signifies at least one Byte Write Select is active, BW
for details.
[8, 9, 10]
[8, 9, 10]
[8, 9, 10]
WE
WE
13.
WE
H
L
L
L
L
L
L
H
L
L
L
L
H
L
L
L
X
is valid. Appropriate write is based on which byte write is active.
BW
CY7C1473BV25, CY7C1475BV25
H
H
H
H
X
L
L
A
BW
X
H
H
L
L
b
X
BW
= Valid signifies that the desired Byte Write Selects
X
H
H
H
H
L
L
B
All BW = L
BW
X
H
L
x
CY7C1471BV25
BW
H
H
H
H
X
L
L
C
BW
X
H
H
L
L
Page 13 of 33
a
BW
X
H
H
H
H
L
L
D
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