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W3EG7264S-AD4 Datasheet, PDF (1/13 Pages) White Electronic Designs Corporation – 512MB - 2x32Mx72 DDR ECC SDRAM UNBUFFERED w/PLL
White Electronic Designs
W3EG7264S-AD4
-BD4
PRELIMINARY*
512MB – 2x32Mx72 DDR ECC SDRAM UNBUFFERED w/PLL
FEATURES
Double-data-rate architecture
DDR200, DDR266 DDR333
• 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
Dual Rank
Power supply: 2.5V ± 0.2V
200 pin SO-DIMM package
• Package height options:
AD4: 35.05 mm (1.38”)
BD4: 31.75 mm (1.25”)
DESCRIPTION
The W3EG7264S is a 2x32Mx72 Double Data Rate
SDRAM memory module based on 512Mb DDR SDRAM
components. The module consists of nine 64Mx8 DDR
SDRAMs stacked in 54 pin TSOP packages mounted on
a 200 pin FR4 substrate. This module is structured as 2
Ranks of 64Mx72 DDR SDRAM.
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.
NOTE: Consult factory for availability of:
• RoHS compliant products
• Vendor source control options
• Industrial temperature option
Clock Speed
CL-tRCD-tRP
OPERATING FREQUENCIES
DDR333@CL=2.5
166MHz
2.5-3-3
DDR266@CL=2
133MHz
2-2-2
DDR266@CL=2.5
133MHz
2.5-3-3
DDR200@CL=2
100MHz
2-2-2
January 2005
Rev. 3
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com