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

White Electronic Designs

PRELIMINARY*

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

December 2005

Rev. 1

WV3EG216M64STSU-D4

256MB – 2x16Mx64 DDR SDRAM UNBUFFERED

DESCRIPTION

The WV3EG216M64STSU is a 2x16Mx64 Double

Data Rate SDRAM memory module based on 256Mb

DDR SDRAM components. The module consists of

eight 16Mx16 DDR SDRAMs in 66 pin TSOP package

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 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.

FEATURES

Double-data-rate architecture

PC2700@CL=2.5

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, (8K/64ms refresh)

Serial presence detect with EEPROM

Dual Rank

Standard 200 pin SO-DIMM package

• Package height options:

D4: 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

Clock Speed

166MHz

2.5-3-3