CY7C1412AV18-250BZXI CYPRESS [Cypress Semiconductor], CY7C1412AV18-250BZXI Datasheet - Page 10

• Manufacturer Part Number: CY7C1412AV18-250BZXI
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-05615 Rev. *D
Write Cycle Descriptions
Write Cycle Descriptions
Write Cycle Descriptions
BWS
BWS
BWS
H
H
H
H
H
H
H
H
L
L
L
L
H
H
L
L
0
H
H
H
H
0
L
/ NWS
0
BWS
0
H
H
H
H
H
H
H
H
L
L
L
L
L-H
L-H
K
–
–
BWS
1
BWS
1
H
H
H
L
L
/ NWS
H
H
H
H
H
H
H
H
L
L
L
L
L-H
L-H
K
–
–
2
1
BWS
During the data portion of a write sequence:
CY7C1425AV18 - the single byte (D[8:0]) is written into the device
During the data portion of a write sequence:
CY7C1425AV18 - the single byte (D[8:0]) is written into the device
No data is written into the devices during this portion of a Write operation.
No data is written into the devices during this portion of a Write operation.
H
H
H
H
H
H
H
H
L
L
L
L
L-H
L-H
K
(CY7C1410AV18 and CY7C1412AV18) (continued)
–
–
–
(CY7C1414AV18)
(CY7C1425AV18)
3
L-H
L-H
L-H
L-H
L-H
L-H
K
L-H
L-H
L-H
–
–
–
–
–
–
K
–
–
During the data portion of a write sequence:
CY7C1410AV18 − only the lower nibble (D
remains unaltered,
CY7C1412AV18 − only the lower byte (D
remains unaltered.
During the data portion of a write sequence:
CY7C1410AV18 − only the upper nibble (D
remains unaltered,
CY7C1412AV18 − only the upper byte (D
remains unaltered.
During the data portion of a write sequence:
CY7C1410AV18 − only the upper nibble (D
remains unaltered,
CY7C1412AV18 − only the upper byte (D
remains unaltered.
No data is written into the devices during this portion of a write operation.
No data is written into the devices during this portion of a write operation.
L-H
L-H
L-H
L-H
L-H
L-H
K
–
–
–
–
–
[2, 8]
During the data portion of a write sequence, all four bytes (D
written into the device.
During the data portion of a write sequence, all four bytes (D
written into the device.
During the data portion of a write sequence, only the lower byte (D
is written into the device. D
During the data portion of a write sequence, only the lower byte (D
is written into the device. D
During the data portion of a write sequence, only the byte (D
written into the device. D
During the data portion of a write sequence, only the byte (D
written into the device. D
During the data portion of a write sequence, only the byte (D
written into the device. D
During the data portion of a write sequence, only the byte (D
written into the device. D
During the data portion of a write sequence, only the byte (D
written into the device. D
During the data portion of a write sequence, only the byte (D
written into the device. D
No data is written into the device during this portion of a write operation.
No data is written into the device during this portion of a write operation.
Comments
[8:0]
[8:0]
[17:0]
[17:0]
[26:0]
[26:0]
Comments
[35:9]
[35:9]
and D
and D
[2, 8]
and D
and D
remains unaltered.
remains unaltered.
Comments
[8:0]
[17:9]
[17:9]
remains unaltered.
remains unaltered.
[3:0]
[7:4]
[7:4]
) is written into the device. D
[35:18]
[35:18]
[35:27]
[35:27]
) is written into the device. D
) is written into the device. D
) is written into the device. D
) is written into the device. D
) is written into the device. D
remains unaltered.
remains unaltered.
remains unaltered.
remains unaltered.
CY7C1410AV18
CY7C1425AV18
CY7C1412AV18
CY7C1414AV18
Page 10 of 25
[35:0]
[35:0]
[17:9]
[17:9]
[26:18]
[26:18]
[35:27]
[35:27]
[17:9]
[8:0]
[8:0]
[7:4]
[3:0]
[3:0]
) are
) are
) is
) is
) is
) is
) is
) is
[8:0]
[8:0]
)
)