W3EG2256M72ASSR-JD3 Datasheet, PDF (11/14 Pages) White Electronic Designs Corporation – 4GB - 2x256Mx72 DDR SDRAM REGISTERED ECC, w/PLL

White Electronic Designs
W3EG2256M72ASSR-JD3
-AJD3
PRELIMINARY
ORDERING INFORMATION FOR JD3
Part Number
Speed
CAS Latency
tRCD
tRP
Height*
W3EG2256M72ASSR262JD3xG
133MHz/266Mb/s
2
2
2
30.48 (1.20")
W3EG2256M72ASSR263JD3xG
133MHz/266Mb/s
2
3
3
30.48 (1.20")
W3EG2256M72ASSR265JD3xG
133MHz/266Mb/s
2.5
3
3
30.48 (1.20")
W3EG2256M72ASSR202JD3xG
100MHz/200Mb/s
2
2
2
30.48 (1.20")
NOTES:
• Consult Factory for availability of RoHS compliant products. (G = RoHS Compliant)
• Vendor specific part numbers are used to provide memory components source control. The place holder for this is shown as lower case “x” in the part numbers above and is to
be replaced with the respective vendors code. Consult factory for qualified sourcing options. (M = Micron, S = Samsung & consult factory for others)
• Consult factory for availability of industrial temperature (-40°C to 85°C) option
PACKAGE DIMENSIONS FOR JD3
3.99
(0.157 (2x))
17.78
(0.700)
10.0
(0.394)
6.36
(0.250)
133.48
(5.255" MAX.)
131.34
(5.171")
128.95
(5.077")
64.77
(2.550)
6.35
(0.250)
1.78
(0.070)
6.35
(0.250 MAX)
1.27
49.53 ^{(0.050 TYP.)}
(1.950)
30.48
(1.20 MAX)
2.31
(0.091)
(2x)
3.99
(0.157)
3.00 (MIN)
(0.118)
(4x)
1.27
± 0.10
(0.050)
(± 0.004)
November, 04
Rev. 3
* ALL DIMENSIONS ARE IN MILLIMETERS AND (INCHES).
11
White Electronic Designs Corporation • [phone] • www.wedc.com