Cypress CY7C1303BV25 User Manual
Page 7
CY7C1306BV25
CY7C1303BV25
Document #: 38-05627 Rev. *A
Page 7 of 19
Write Descriptions (CY7C1303BV25)
[2, 8]
BWS
0
BWS
1
K
K
Comments
L
L
L-H
-
During the Data portion of a Write sequence, both bytes (D
[17:0]
) are written into the device.
L
L
-
L-H
During the Data portion of a Write sequence, both bytes (D
[17:0]
) are written into the device.
L
H
L-H
-
During the Data portion of a Write sequence, only the lower byte (D
[8:0]
) is written into the
device. D
[17:9]
remains unaltered.
L
H
-
L-H
During the Data portion of a Write sequence, only the lower byte (D
[8:0]
) is written into the
device. D
[17:9]
remains unaltered.
H
L
L-H
-
During the Data portion of a Write sequence, only the byte (D
[17:9]
) is written into the device.
D
[8:0]
remains unaltered.
H
L
-
L-H
During the Data portion of a Write sequence, only the byte (D
[17:9]
) is written into the device.
D
[8:0]
remains unaltered.
H
H
L-H
-
No data is written into the device during this portion of a write operation.
H
H
-
L-H
No data is written into the device during this portion of a write operation.
Write Descriptions (CY7C1306BV25)
[2, 8]
BWS
0
BWS
1
BWS
2
BWS
3
K
K
Comments
L
L
L
L
L-H
-
During the Data portion of a Write sequence, all four bytes (D
[35:0]
) are
written into the device.
L
L
L
L
-
L-H
During the Data portion of a Write sequence, all four bytes (D
[35:0]
) are
written into the device.
L
H
H
H
L-H
-
During the Data portion of a Write sequence, only the lower byte (D
[8:0]
)
is written into the device. D
[35:9]
will remain unaltered.
L
H
H
H
-
L-H
During the Data portion of a Write sequence, only the lower byte (D
[8:0]
)
is written into the device. D
[35:9]
will remain unaltered.
H
L
H
H
L-H
-
During the Data portion of a Write sequence, only the byte (D
[17:9]
) is
written into the device. D
[8:0]
and D
[35:18]
will remain unaltered.
H
L
H
H
-
L-H
During the Data portion of a Write sequence, only the byte (D
[17:9]
) is
written into the device. D
[8:0]
and D
[35:18]
will remain unaltered.
H
H
L
H
L-H
-
During the Data portion of a Write sequence, only the byte (D
[26:18]
) is
written into the device. D
[17:0]
and D
[35:27]
will remain unaltered.
H
H
L
H
-
L-H
During the Data portion of a Write sequence, only the byte (D
[26:18]
) is
written into the device. D
[17:0]
and D
[35:27]
will remain unaltered.
H
H
H
L
L-H
-
During the Data portion of a Write sequence, only the byte (D
[35:27]
) is
written into the device. D
[26:0]
will remain unaltered.
H
H
H
L
-
L-H
During the Data portion of a Write sequence, only the byte (D
[35:27]
) is
written into the device. D
[26:0]
will remain unaltered.
H
H
H
H
L-H
-
No data is written into the device during this portion of a Write operation.
H
H
H
H
-
L-H
No data is written into the device during this portion of a Write operation.
Note:
8. Assumes a Write cycle was initiated per the Write Port Cycle Description Truth Table. BWS
0
, BWS
1
, in the case of CY7C1303BV25 and also BWS
2
and BWS
3
in the case of CY7C1306BV25 can be altered on different portions of a write cycle, as long as the set-up and hold requirements are achieved. 38-05627