W3EG7236S-D3

White Electronic Designs W3EG7236S-D3 PRELIMINARY* 256MB – 32Mx72 DDR SDRAM REGISTERED, w/PLL FEATURES Speeds of 100MHz and 133 MHz 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 184 pin DIMM package Power Supply: 2.5V ± 0.20V www.DataSheet4U.com DESCRIPTION The W3EG7236S is a 32Mx72 Double Data Rate SDRAM memory module based on 256Mb DDR SDRAM component. The module consists of nine 32Mx8 DDR SDRAMs in 66 pin TSOP package 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 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. OPERATING FREQUENCIES DDR266 @CL=2 Clock Speed CL-tRCD-tRP 133MHz 2-3-3 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 CONFIGURATIONS PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43...