W3EG72128S-AD4 Datasheet, PDF (1/14 Pages) White Electronic Designs Corporation – 1GB - 2x64Mx72 DDR SDRAM UNBUFFERED ECC w/PLL

White Electronic Designs
W3EG72128S-AD4
-BD4
PRELIMINARY*
1GB – 2x64Mx72 DDR SDRAM UNBUFFERED ECC w/PLL
FEATURES
Double-data-rate architecture
DDR200, DDR266 and DDR333
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 ± 0.20V
JEDEC standard 200 pin SO-DIMM package
• Package height options:
AD4: 35.5 mm (1.38") and
BD4: 31.75 mm (1.25")
DESCRIPTION
The W3EG72128S is a 2x64Mx72 Double Data Rate
SDRAM memory module based on 512Mb DDR SDRAM
components. This module consists of eighteen 64Mx8 bit
DDR SDRAMs in 66 pin TSOP packages mounted on a
200 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.
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
August 2005
Rev. 3
1
White Electronic Designs Corporation • [phone] • www.wedc.com