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CY7C1339G(2004) View Datasheet(PDF) - Cypress Semiconductor
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CY7C1339G
(Rev.:2004)
4-Mbit (128K x 32) Pipelined Sync SRAM
Cypress Semiconductor
CY7C1339G Datasheet PDF : 17 Pages
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PRELIMINARY
CY7C1339G
Partial Truth Table for Read/Write
[2, 8]
Read
Function
GW
BWE
BW
D
BW
C
BW
B
BW
A
H
H
X
X
X
X
Read
H
L
H
H
H
H
Write Byte A ā DQ
A
Write Byte B ā DQ
B
Write Bytes B, A
H
L
H
H
H
L
H
L
H
H
L
H
H
L
H
H
L
L
Write Byte Cā DQ
C
Write Bytes C, A
H
L
H
L
H
H
H
L
H
L
H
L
Write Bytes C, B
H
L
H
L
L
H
Write Bytes C, B, A
H
L
H
L
L
L
Write Byte Dā DQ
D
Write Bytes D, A
H
L
L
H
H
H
H
L
L
H
H
L
Write Bytes D, B
H
L
L
H
L
H
Write Bytes D, B, A
H
L
L
H
L
L
Write Bytes D, C
H
L
L
L
H
H
Write Bytes D, C, A
H
L
L
L
H
L
Write Bytes D, C, B
H
L
L
L
L
H
Write All Bytes
H
L
L
L
L
L
Write All Bytes
L
X
X
X
X
X
Note:
8.Table only lists a partial listing of the byte write combinations. Any combination of BW
X
is valid. Appropriate write will be done based on which byte write is active.
Document #: 38-05520 Rev. *A
Page 7 of 17
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