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參數(shù)資料
| 型號(hào)： | W3EG6437S202D4S |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | DRAM |
| 英文描述： | 32M X 64 DDR DRAM MODULE, 0.75 ns, DMA200 |
| 封裝： | SO-DIMM-200 |
| 文件頁(yè)數(shù)： | 11/12頁(yè) |
| 文件大?。?/td> | 300K |
| 代理商： | W3EG6437S202D4S |
8
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
May 2005
Rev. 1
White Electronic Designs Corp. reserves the right to change products or specications without notice.
PRELIMINARY*
W3EG6437S-D4
DDR SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND
RECOMMENDED AC OPERATING CONDITIONS (Continued)
DDR400: VCC = VCCQ = +2.6V ± 0.1V
AC CHARACTERISTICS
403
355
262
265/202
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
UNITS NOTES
DQS write postamble
tWPST
0.4
0.6
0.4
0.6
0.4
0.6
0.4
0.6
tCK
17
Write recovery time
tWR
15
ns
Internal WRITE to READ command delay
tWTR
2111
tCK
Data valid output window
na
tQH - tDQSQ
tQH - tDQSQ
ns
22
REFRESH to REFRESH command interval
tREFC
70.3
s
21
Average periodic refresh interval
tREFI
7.8
s
21
Terminating voltage delay to VCC
tVTD
0000
ns
Exit SELF REFRESH to non-READ command
tXSNR
70
75
ns
Exit SELF REFRESH to READ command
tXSRD
200
tCK
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