W3EG6433S-JD3

White Electronic Designs W3EG6433S-D3 -JD3 PRELIMINARY* 256MB – 2x16Mx64 DDR SDRAM UNBUFFERED FEATURES DDR266 and DDR333 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 ± 0.2V JEDEC 184 pin DIMM package www.DataSheet4U.com DESCRIPTION The W3EG6433S is a 2x16Mx64 Double Data Rate SDRAM memory module based on 256Mb DDR SDRAM component. The module consists of sixteen 16Mx8 DDR SDRAMs in 66 pin TSOP packages 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 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. JD3 PCB height: 30.48 (1.20") NOTE: Consult factory for availability of: RoHS compliant products Vendor source control options Industrial temperature option OPERATING FREQUENCIES DDR333@CL=2.5 Clock Speed CL-tRCD-tRP 166MHz 2.5-3-3 DDR266 @CL=2 133MHz 2-2-2 DDR266 @CL=2 133MHz 2-3-3 DDR266 @CL=2.5 133MHz 2.5-3-3 November 2005 Rev. 2 1 White Electronic Designs Corp...