W3EG7218S-BD4

White Electronic Designs W3EG7218S-AD4 -BD4 PRELIMINARY* 128MB – 16Mx72 DDR SDRAM UNBUFFERED w/PLL FEATURES Double-data-rate architecture DDR200 and DDR266 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 Power Supply: 2.5V ± 0.20V JEDEC standard 200 pin SO-DIMM package www.DataSheet4U.com DESCRIPTION The W3EG7218S is a 16Mx72 Double Data Rate SDRAM memory module based on 128Mb DDR SDRAM component. The module consists of nine 16Mx8 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. Package height options: AD4: 35.5mm (1.38") and BD4: 31.75mm (1.25") * This product is under development, is not qualified or characterized and is subject to change without notice. OPERATING FREQUENCIES DDR266 @CL=2 Clock Speed CL-tRCD-tRP 133MHz 2-2-2 DDR266 @CL=2.5 133MHz 2.5-3-3 DDR200 @CL=2 100MHz 2-2-2 November 2004 Rev. 1 1 White Electronic Designs Corporation (602) 437-1520 www.wedc.com White Electronic Designs PIN CONFIGURATION Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15...