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W3EG7264S-JD3 Datasheet(PDF) 1 Page - White Electronic Designs Corporation

Part # W3EG7264S-JD3
Description  512MB - 64Mx72 DDR SDRAM UNBUFFERED
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Manufacturer  WEDC [White Electronic Designs Corporation]
Direct Link  http://www.whiteedc.com
Logo WEDC - White Electronic Designs Corporation

W3EG7264S-JD3 Datasheet(HTML) 1 Page - White Electronic Designs Corporation

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White Electronic Designs
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
May 2005
Rev. 5
W3EG7264S-JD3-D3
PRELIMINARY*
Double-data-rate architecture
DDR200, DDR266, DDR333 and DDR400
• JEDEC design specifications
Bi-directional data strobes (DQS)
Differential clock inputs (CK & CK#)
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
Power supply: DDR333, 266, 200: VCC = VCCQ =
+2.5V ± 0.2V; DDR400: VCC = VCCQ = +2.6V ± 0.1V
JEDEC standard 184 pin DIMM package
PCB Height: 30.48mm (1.20") Max
NOTE: Consult Factory for availability of:
* Lead-Free Products
* Vendor source control options
* Industrial Temperature option
512MB – 64Mx72 DDR SDRAM UNBUFFERED
FEATURES
DESCRIPTION
The W3EG7264S is a 64Mx72 Double Data Rate
SDRAM memory module based on 512Mb DDR SDRAM
components. The module consists of nine 64Mx8 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.
* This product is under development, is not qualified or characterized and is subject to
change without notice.
OPERATING FREQUENCIES
DDR400 @CL=3
DDR333 @CL=2.5
DDR266 @CL=2
DDR266 @CL=2.5
DDR200 @CL=2
Clock Speed
200MHz
166MHz
133MHz
133MHz
100MHz
CL-tRCD-tRP
3-3-3
2.5-3-3
2-2-2
2.5-3-3
2-2-2


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