CY7C1310V18-167BZC Просмотр технического описания (PDF) - Cypress Semiconductor
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CY7C1310V18-167BZC Datasheet PDF : 25 Pages
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PRELIMINARY
CY7C1310V18
CY7C1312V18
CY7C1314V18
Write Cycle Descriptions (CY7C1310V18 and CY7C1312V18) (continued)[3, 9]
BWS0 BWS1
K
L
H
L-H
L
H
–
H
L
L-H
H
L
–
H
H
L-H
H
H
–
K
Comments
– During the Data portion of a Write sequence :
CY7C1310V18 − only the lower nibble (D[3:0]) is written into the device. D[7:4] will remain
unaltered,
CY7C1312V18 − only the lower byte (D[8:0]) is written into the device. D[17:9] will remain
unaltered.
L-H During the Data portion of a Write sequence :
CY7C1310V18 − only the lower nibble (D[3:0]) is written into the device. D[7:4] will remain
unaltered,
CY7C1312V18 − only the lower byte (D[8:0]) is written into the device. D[17:9] will remain
unaltered.
– During the Data portion of a Write sequence :
CY7C1310V18 − only the upper nibble (D[7:4]) is written into the device. D[3:0] will remain
unaltered,
CY7C1312V18 − only the upper byte (D[17:9]) is written into the device. D[8:0] will remain
unaltered.
L-H During the Data portion of a Write sequence :
CY7C1310V18 − only the upper nibble (D[7:4]) is written into the device. D[3:0] will remain
unaltered,
CY7C1312V18 − only the upper byte (D[17:9]) is written into the device. D[8:0] will remain
unaltered.
– No data is written into the devices during this portion of a write operation.
L-H No data is written into the devices during this portion of a write operation.
Write Cycle Descriptions (CY7C1314V18) [3, 9]
BWS0
BWS1
BWS2
BWS3
K
L
L
L
L
L-H
L
L
L
L
-
L
H
H
H
L-H
L
H
H
H
-
H
L
H
H
L-H
H
L
H
H
-
H
H
L
H
L-H
H
H
L
H
-
H
H
H
L
L-H
K
Comments
-
During the Data portion of a Write sequence, all four
bytes (D[35:0]) are written into the device.
L-H During the Data portion of a Write sequence, all four
bytes (D[35:0]) are written into the device.
-
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 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.
-
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.
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.
-
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.
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.
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.
Document #: 38-05180 Rev. *A
Page 9 of 25
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