CY7C1392BV18
CY7C1992BV18
CY7C1393BV18
CY7C1394BV18
Document Number: 38-05623 Rev. *C
Page 10 of 27
Write Cycle Descriptions (CY7C1394BV18)[2, 8]
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.
HHHH
L-H
–
No data is written into the device during this portion of a Write operation.
HHHH
–
L-H No data is written into the device during this portion of a Write operation.
Write Cycle Descriptions (CY7C1992BV18)[2, 8]
BWS0
KK
Comments
L
L-H
–
During the Data portion of a Write sequence, the single byte (D[8:0]) is written into the device.
L
–
L-H
During the Data portion of a Write sequence, the single byte (D[8:0]) is written into the device.
H
L-H
–
No data is written into the device during this portion of a Write operation.
H
–
L-H
No data is written into the device during this portion of a Write operation.
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