PRELIMINARY
CY7C1323AV25
Document #: 38-05501 Rev. *A
Page 6 of 18
Write Cycle Descriptions[2, 10]
BWS0
BWS1
BWS2
BWS3
KK
Comments
LLLL
L-H
-
During the Data portion of a Write sequence, all four bytes (D[35:0]) are written
into the device.
LLLL
-
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:
10. Assumes a Write cycle was initiated per the Write Port Cycle Description Truth Table. BWS0, BWS1, BWS2, BWS3 can be altered on different portions of a Write
cycle, as long as the set-up and hold requirements are achieved.
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