CY7C1518AV18-278BZI CYPRESS [Cypress Semiconductor], CY7C1518AV18-278BZI Datasheet - Page 11

• Manufacturer Part Number: CY7C1518AV18-278BZI
• Description: 72-Mbit DDR-II SRAM 2-Word Burst Architecture
• Manufacturer: CYPRESS [Cypress Semiconductor]

Write Cycle Descriptions
The write cycle description table for CY7C1527AV18 follows.
Write Cycle Descriptions
The write cycle description table for CY7C1520AV18 follows.
Document Number: 001-06982 Rev. *C
BWS
BWS
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
0
0
BWS
L–H
L–H
K
H
H
H
H
H
H
H
H
–
–
L
L
L
L
1
BWS
L–H
L–H
K
H
H
H
H
H
H
H
H
–
–
L
L
L
L
2
During the Data portion of a write sequence, the single byte (D
During the Data portion of a write sequence, the single byte (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.
BWS
H
H
H
H
H
H
H
H
L
L
L
L
3
L–H
L–H
L–H
L–H
L–H
L–H
K
–
–
–
–
–
–
L–H During the Data portion of a write sequence, all four bytes (D
L–H During the Data portion of a write sequence, only the lower byte (D
L–H During the Data portion of a write sequence, only the byte (D
L–H During the Data portion of a write sequence, only the byte (D
L–H During the Data portion of a write sequence, only the byte (D
L–H No data is written into the device during this portion of a write operation.
K
–
–
–
–
–
–
During the Data portion of a write sequence, all four bytes (D
the device.
the device.
During the Data portion of a write sequence, only the lower byte (D
into the device. D
into the device. D
During the Data portion of a write sequence, only the byte (D
the device. D
the device. D
During the Data portion of a write sequence, only the byte (D
the device. D
the device. D
During the Data portion of a write sequence, only the byte (D
the device. D
the device. D
No data is written into the device during this portion of a write operation.
[2, 8]
[2, 8]
[8:0]
[8:0]
[17:0]
[17:0]
[26:0]
[26:0]
and D
and D
[35:9]
[35:9]
and D
and D
remains unaltered.
remains unaltered.
remains unaltered.
remains unaltered.
[35:18]
[35:18]
[35:27]
[35:27]
CY7C1516AV18, CY7C1527AV18
CY7C1518AV18, CY7C1520AV18
remains unaltered.
remains unaltered.
remains unaltered.
remains unaltered.
Comments
[8:0]
[8:0]
) is written into the device.
) is written into the device.
[35:0]
[35:0]
[26:18]
[26:18]
[35:27]
[35:27]
[17:9]
[17:9]
) are written into
) are written into
) is written into
) is written into
) is written into
) is written into
) is written into
) is written into
[8:0]
[8:0]
Page 11 of 30
) is written
) is written
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