PRELIMINARY
CY7C1305BV18
CY7C1307BV18
Document #: 38-05629 Rev. **
Page 7 of 20
Write Cycle Descriptions (CY7C1307BV18)[2,10]
BWS0
BWS1
BWS2
BWS3
KK
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.
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