WED3EG7218S-JD3

www.datasheet4u.com White Electronic Designs WED3EG7218S-JD3 PRELIMINARY* 128MB – 16Mx72 DDR SDRAM UNBUFFERED FEATURES Double-data-rate architecture DDR200, DDR266, DDR333 and DDR400 JEDEC design specified 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: VCC = VCCQ = 2.5V±0.2V (100, 133 and 166MHz) VCC = VCCQ = 2.6V±0.1V (200MHz) * This product is under development, is not qualified or characterized and is subject to change without notice. DESCRIPTION The WED3EG7218S 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 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. JEDEC 184 pin DIMM package JD3 PCB height: 30.48 (1.20") Max NOTE: Consult factory for availability of: RoHS Products Vendor source control options Industrial temperature option OPERATING FREQUENCIES DDR400 @CL=3 Clock Speed CL-tRCD-tRP 200MHz 3-3-3 DDR333 @CL=2.5 166MHz 2.5-3-3 DDR266 @CL=2 133MHz 2-2-...