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WED3EG7232S-JD3 fiches techniques PDF

White Electronic Designs - 256MB - 32Mx72 DDR SDRAM UNBUFFERED

Numéro de référence WED3EG7232S-JD3
Description 256MB - 32Mx72 DDR SDRAM UNBUFFERED
Fabricant White Electronic Designs 
Logo White Electronic Designs 





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WED3EG7232S-JD3 fiche technique
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WED3EG7232S-JD3
PRELIMINARY
256MB – 32Mx72 DDR SDRAM UNBUFFERED
FEATURES
Double-data-rate architecture
DDR200, DDR266, DDR333 amd DDR400
• JEDEC design specications
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:
• VCC = VCCQ = +2.5V ± 0.2V (100, 133 and
166MHz)
• VCC = VCCQ = +2.6V ± 0.1V (200MHz)
JEDEC 184 pin DIMM package
• JD3 PCB height: 30.48 (1.20") Max
DESCRIPTION
The WED3EG7232S is a 32Mx72 Double Data Rate
SDRAM memory module based on 256Mb DDR SDRAM
components. The module consists of nine 32Mx8 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 qualied or characterized and is subject to
change without notice.
NOTE: Consult factory for availability of:
• RoHS compliant products
• Vendor source control options
• Industrial temperature option
Clock Speed
CL-tRCD-tRP
DDR400 @CL=3
200MHz
3-3-3
OPERATING FREQUENCIES
DDR333 @CL=2.5
DDR266 @CL=2
166MHz
133MHz
2.5-3-3
2-2-2
DDR266 @CL=2.5
133MHz
2.5-3-3
DDR200 @CL=2
100MHz
2-2-2
June 2006
Rev. 6
1 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

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