Cypress CY7C1157V18 User Manual
Page 11
CY7C1146V18, CY7C1157V18
CY7C1148V18, CY7C1150V18
Document Number: 001-06621 Rev. *D
Page 11 of 27
The write cycle descriptions of CY7C1148V18 follows,
BWS
0
BWS
1
BWS
2
BWS
3
K
K
Comments
L
L
L
L
L – H
–
When the Data portion of a write sequence is active, all four bytes (D
[35:0]
) are
written into the device.
L
L
L
L
–
L – H When the Data portion of a write sequence is active, all four bytes (D
[35:0]
) are
written into the device.
L
H
H
H
L – H
–
When the Data portion of a write sequence is active, only the lower byte (D
[8:0]
) is
written into the device. D
[35:9]
remains unaltered.
L
H
H
H
–
L – H When the Data portion of a write sequence is active, only the lower byte (D
[8:0]
) is
written into the device. D
[35:9]
remains unaltered.
H
L
H
H
L – H
–
When the Data portion of a write sequence is active, only the byte (D
[17:9]
) is written
into the device. D
[8:0]
and D
[35:18]
remains unaltered.
H
L
H
H
–
L – H When the Data portion of a write sequence is active, only the byte (D
[17:9]
) is written
into the device. D
[8:0]
and D
[35:18]
remains unaltered.
H
H
L
H
L – H
–
When the Data portion of a write sequence is active, only the byte (D
[26:18]
) is
written into the device. D
[17:0]
and D
[35:27]
remains unaltered.
H
H
L
H
–
L – H When the Data portion of a Write sequence is active, only the byte (D
[26:18]
) is
written into the device. D
[17:0]
and D
[35:27]
remains unaltered.
H
H
H
L
L – H
–
When the Data portion of a write sequence is active, only the byte (D
[35:27]
) is
written into the device. D
[26:0]
remains unaltered.
H
H
H
L
–
L – H When the Data portion of a write sequence is active, only the byte (D
[35:27]
) is
written into the device. D
[26:0]
remains unaltered.
H
H
H
H
L – H
–
No data is written into the device when this portion of a write operation is active.
H
H
H
H
–
L – H No data is written into the device when this portion of a write operation is active.