cy7c1380d-250bzxi Cypress Semiconductor Corporation., cy7c1380d-250bzxi Datasheet - Page 10

• Manufacturer Part Number: cy7c1380d-250bzxi
• Description: 18-mbit 512k X 36/1m X 18 Pipelined Sram
• Manufacturer: Cypress Semiconductor Corporation.

Truth Table for Read/Write
Truth Table for Read/Write
Document #: 38-05543 Rev. *E
Note:
Read
Read
Write Byte A – (DQ
Write Byte B – (DQ
Write Bytes B, A
Write Byte C – (DQ
Write Bytes C, A
Write Bytes C, B
Write Bytes C, B, A
Write Byte D – (DQ
Write Bytes D, A
Write Bytes D, B
Write Bytes D, B, A
Write Bytes D, C
Write Bytes D, C, A
Write Bytes D, C, B
Write All Bytes
Write All Bytes
Read
Read
Write Byte A – (DQ
Write Byte B – (DQ
Write Bytes B, A
Write All Bytes
Write All Bytes
9. Table only lists a partial listing of the byte write combinations. Any combination of BW
Function (CY7C1380D/CY7C1380F)
Function (CY7C1382D/CY7C1382F)
B
C
D
B
A
A
and DQP
and DQP
and DQP
and DQP
and DQP
and DQP
B
D
A
C
A
B
)
)
)
)
)
)
[4, 9]
[4, 9]
GW
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
BWE
GW
H
L
L
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
L
X
is valid. Appropriate write will be done based on which byte write is active.
BW
H
H
H
H
H
H
H
H
X
L
L
L
L
X
L
L
L
L
D
BWE
H
X
L
L
L
L
L
CY7C1380D, CY7C1380F
CY7C1382D, CY7C1382F
BW
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
L
L
X
C
BW
X
H
H
X
L
L
L
B
BW
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
L
L
X
B
Page 10 of 30
BW
H
H
X
L
X
BW
L
L
X
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
X
A
A
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