1

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

White Electronic Designs

W3EG6466S-AD4

-BD4

January 2005

Rev. 2

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

PRELIMINARY*

512MB – 2x32Mx64 DDR SDRAM UNBUFFERED, w/PLL

DESCRIPTION

The W3EG6466S is a 2x32Mx64 Double Data Rate

SDRAM memory module based on 512Mb DDR SDRAM

components. The module consists of sixteen 32Mx8

components as eight 64Mx8 stacked 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.

FEATURES

DDR200, DDR266 and DDR333

• JEDEC design specifications

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

Dual Rank

Power supply: 2.5V ± 0.20V

JEDEC standard 200 pin SO-DIMM package

• Package height options:

AD4: 35.5mm (1.38")

BD4: 31.75mm (1.25")

NOTE: Consult factory for availability of:

• RoHS compliant products

• Vendor source control options

• Industrial temperature option

OPERATING FREQUENCIES

DDR333 @CL=2.5

DDR266 @CL=2

DDR266 @CL=2.5

DDR200 @CL=2

Clock Speed

166MHz

133MHz

133MHz

100MHz

2.5-3-3

2-2-2

2.5-3-3

2-2-2