参数资料
型号: W3EG7264S265AD4SG
厂商: MICROSEMI CORP-PMG MICROELECTRONICS
元件分类: DRAM
英文描述: 64M X 72 DDR DRAM MODULE, 0.75 ns, DMA200
封装: ROHS COMPLIANT, SO-DIMM-200
文件页数: 12/13页
文件大小: 197K
代理商: W3EG7264S265AD4SG
W3EG7264S-AD4
-BD4
8
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
January 2005
Rev. 3
PRELIMINARY
DDR SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC
OPERATING CONDITIONS (Continued)
AC CHARACTERISTICS
335
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
1111
tCK
Data valid output window
na
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
75
ns
Exit SELF REFRESH to READ command
tXSRD
200
tCK
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