參數(shù)資料
型號(hào)： CY7C1177V18-333BZXI
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： SRAM
英文描述： 18-Mbit DDR-II+ SRAM 2-Word Burst Architecture (2.5 Cycle Read Latency)
中文描述： 2M X 9 DDR SRAM, 0.45 ns, PBGA165
封裝： 13 X 15 MM, 1.40 MM HEIGHT, LEAD FREE, MO-216, FBGA-165
文件頁(yè)數(shù)： 2/27頁(yè)
文件大?。?/td> 648K
代理商： CY7C1177V18-333BZXI
CY7C1166V18, CY7C1177V18
CY7C1168V18, CY7C1170V18
Document Number: 001-06620 Rev. *D
Page 10 of 27
Write Cycle Descriptions
The write cycle descriptions of CY7C1166V18 and CY7C1168V18 follows. [2, 8]
BWS0/
NWS0
BWS1/
NWS1
K
Comments
L
L–H
–
During the Data portion of a write sequence
:
CY7C1166V18
both nibbles (D
[7:0]) are written into the device.
CY7C1168V18
both bytes (D
[17:0]) are written into the device.
L
–
L-H During the Data portion of a write sequence
:
CY7C1166V18
both nibbles (D
[7:0]) are written into the device.
CY7C1168V18
both bytes (D
[17:0]) are written into the device.
L
H
L–H
–
During the Data portion of a write sequence
:
CY7C1166V18
only the lower nibble (D
[3:0]) is written into the device, D[7:4] remains unaltered.
CY7C1168V18
only the lower byte (D
[8:0]) is written into the device, D[17:9] remains unaltered.
L
H
–
L–H During the Data portion of a write sequence
:
CY7C1166V18
only the lower nibble (D
[3:0]) is written into the device, D[7:4] remains unaltered.
CY7C1168V18
only the lower byte (D
[8:0]) is written into the device, D[17:9] remains unaltered.
H
L
L–H
–
During the Data portion of a write sequence
:
CY7C1166V18
only the upper nibble (D
[7:4]) is written into the device, D[3:0] remains unaltered.
CY7C1168V18
only the upper byte (D
[17:9]) is written into the device, D[8:0] remains unaltered.
H
L
–
L–H During the Data portion of a write sequence
:
CY7C1166V18
only the upper nibble (D
[7:4]) is written into the device, D[3:0] remains unaltered.
CY7C1168V18
only the upper byte (D
[17:9]) is written into the device, D[8:0] remains unaltered.
H
L–H
–
No data is written into the devices during this portion of a write operation.
H
–
L–H No data is written into the devices during this portion of a write operation.
The write cycle descriptions of CY7C1177V18 follows. [2, 8]
BWS0
K
Comments
L
L-H
–
During the Data portion of a Write sequence
, the single byte (D
[8:0]) is written into the device.
L
–
L-H
During the Data portion of a Write sequence
, the single byte (D
[8:0]) is written into the device.
H
L-H
–
No data is written into the device during this portion of a Write operation.
H
–
L-H
No data is written into the device during this portion of a Write operation.
Note
8. Is based on a write cycle was initiated in accordance with the Write Cycle Description Truth Table. Alter NWS0, NWS1, BWS0, BWS1, BWS2, and BWS3 on different
portions of a write cycle, as long as the setup and hold requirements are achieved.
相關(guān)PDF資料
PDF描述
CY7C1170V18 18-Mbit DDR-II+ SRAM 2-Word Burst Architecture (2.5 Cycle Read Latency)
CY7C1177V18 18-Mbit DDR-II+ SRAM 2-Word Burst Architecture (2.5 Cycle Read Latency)
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