W3EG72128S-BD4

White Electronic Designs W3EG72128S-AD4 -BD4 PRELIMINARY* 1GB – 2x64Mx72 DDR SDRAM UNBUFFERED ECC w/PLL FEATURES Double-data-rate architecture DDR200, DDR266 and DDR333 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 www.DataSheet4U.com DESCRIPTION The W3EG72128S is a 2x64Mx72 Double Data Rate SDRAM memory module based on 512Mb DDR SDRAM components. This module consists of eighteen 64Mx8 bit 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. Package height options: AD4: 35.5 mm (1.38") and BD4: 31.75 mm (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 CL-tRCD-tRP 166MHz 2.5-3-3 DDR266 @CL=2 133MHz 2-2-2 DDR266 @CL=2.5 133MHz 2.5-3-3 ...