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WED3EG72256SXX-JD3 Datasheet

  • WED3EG72256SXX-JD3

  • DDR SDRAM Modules - 184 Pin DIMM. Registered 72-bit wide

  • 10頁

  • ETC

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WED3EG72256SXX-JD3
ADVANCED
2GB- 256Mx72, ECC, DDR SDRAM DIMM REGISTERED
MODULE
DESCRIPTION
The WED3EG72256SXX-JD3 is a 256Mx72 Double
Data Rate SDRAM memory module based on 1
Gigabit DDR SDRAM components. The module
consists of eighteen, 256Mx4 DDR SDRAMs in 66
pin TSOP packages mounted on a 184 pin FR4
substrate.
Synchronous design allows precise cycle control with
the use of system clock. Data I/O transactions are
possible on both edges and Burst Lengths allow the
same device to be useful for a variety of high
bandwidth, high performance memory system
applications.
FEATURES
Double data rate architecture; two data transfers
per clock cycle
Clock speeds of 100MHz and 133MHz
Bi-directional data strobes (DQS)
Differential clock inputs (CK & CK)
DLL aligns DQ and DQS transition with CK
transition
Programmable Read latency 2, 2.5 (clock)
Programmable Burst Length (2, 4, 8)
Programmable Burst type (sequential &
interleave)
Edge aligned data output, center aligned data
input
Auto and self refresh
Serial presence detect
JEDEC standard 184 pin DIMM package
Power supply: Vdd: 2.5V 鹵 0.2V, Vddq: 2.5V 鹵
0.2V
OPERATING FREQUENCIES
262JD3
(DDR266@CL=2)
133MHz
2-3-3
265JD3
(DDR266@CL=2.5)
133MHz
2.5-3-3
202JD2
(DDR200@CL=2)
100MHz
2-2-2
Speed
CL-tRCD-tRP
Advance information: Speed may not be available.
January 2004 Rev. 0
1
White Electronic Designs Corporation 鈥?/div>
(602) 437-1520 鈥?www.whiteedc.com

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