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

White Electronic Designs

WED2DG472512V-D2

January 2000

Rev. 0

ADVANCED*

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

DESCRIPTION

16MB (4x512Kx72) SYNC BURST-PIPELINE,

DUAL KEY DIMM

The WED2DG472512V is a Synchronous/Synchronous

Burst SRAM, 84 position Dual Key; Double High DIMM

(168 contacts) Module, organized as 4x512Kx72. The

Module contains sixteeen (16) Synchronous Burst

RAM devices, packaged in the industry standard

JEDEC 14mmx20mm TQFP placed on a Multilayer

FR4 Substrate. The Module Architecture is defined as a

Sync/SyncBurst, Pipeline, with support for either linear or

sequential burst. This Module provides high performance,

3-1-1-1 accesses when used in Burst Mode, and when

used in Synchronous Only Mode, provides a high

performance, data access every second cycle.

Synchronous Only operations are performed via strapping

ADSC# Low, and ADSP#/ADV# High, which provides for

Ultra Fast Accesses in Read Mode while providing for

internally self-timed Early Writes.

Synchronous/Synchronous Burst operations are in

relation to an externally supplied clock, Registered

Address, Registered Global Write, Registered Enables as

well as an Asynchronous Output Enable. This Module has

been defined with full flexibility, which allows individual

control of each of the eight bytes, as well as Quad Words

in both Read and Write Operations.

* This product is under development, is not qualified or characterized and is subject to

change or cancellation without notice.

FEATURES

4x512Kx72 Synchronous, Synchronous Burst

Pipeline Architecture; Single Cycle Deselect

Linear and Sequential Burst Support via MODE pin

Clock Controlled Registered Module Enable (EM#)

Clock Controlled Byte Write Mode Enable (BWE#)

Clock Controlled Registered Address

Clock Controlled Registered Global Write (GW#)

Asynchronous Output Enable (G#)

Internally Self-Timed Write

Gold Lead Finish

3.3V ± 10% Operation

Frequency(s): 200, 166, 150, and 133MHz

Common Data I/O

High Capacitance (30pF) Drive, at Rated Access Speed

Single Total Array Clock