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参数资料
| 型号： | CY7C2561KV18-450BZC |
| 厂商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分类： | SRAM |
| 英文描述： | 8M X 8 QDR SRAM, 0.37 ns, PBGA165 |
| 封装： | 15 X 13 MM, 1.4 MM HEIGHT, FBGA-165 |
| 文件页数： | 4/29页 |
| 文件大小： | 839K |
| 代理商： | CY7C2561KV18-450BZC |
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PRELIMINARY
CY7C2561KV18, CY7C2576KV18
CY7C2563KV18, CY7C2565KV18
Document Number: 001-15887 Rev. *E
Page 12 of 29
Table 6. Write Cycle Descriptions
BWS0 BWS1 BWS2 BWS3
K
Comments
LLLL
L–H
–
During the data portion of a write sequence, all four bytes (D[35:0]) are written into
the device.
LLLL
–
L–H During the data portion of a write sequence, all four bytes (D[35:0]) are written into
the device.
L
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] remains unaltered.
L
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] remains unaltered.
H
L
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] remains unaltered.
H
L
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] remains unaltered.
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] remains unaltered.
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] remains unaltered.
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] remains unaltered.
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] remains 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.
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