W3EG7236S-D3 Datasheet, PDF (1/12 Pages) White Electronic Designs Corporation – 256MB - 32Mx72 DDR SDRAM REGISTERED, w/PLL

White Electronic Designs
W3EG7236S-D3
PRELIMINARY*
256MB – 32Mx72 DDR SDRAM REGISTERED, w/PLL
FEATURES
DESCRIPTION
Speeds of 100MHz and 133 MHz
Double-data-rate architecture
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
184 pin DIMM package
Power Supply: 2.5V ± 0.20V
The W3EG7236S is a 32Mx72 Double Data Rate
SDRAM memory module based on 256Mb DDR
SDRAM component. The module consists of nine
32Mx8 DDR SDRAMs in 66 pin TSOP package
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 Lenths 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.
Clock Speed
CL-tRCD-tRP
OPERATING FREQUENCIES
DDR266 @CL=2
133MHz
2-3-3
DDR266 @CL=2.5
133MHz
2.5-3-3
DDR200 @CL=2
100MHz
2-2-2
November 2004
Rev. 1
1
White Electronic Designs Corporation • [phone] • www.wedc.com