器件名称: W3EG7264S-BD4
功能描述: 512MB - 2x32Mx72 DDR ECC SDRAM UNBUFFERED w/PLL
文件大小: 197.38KB 共13页
简 介:White Electronic Designs
W3EG7264S-AD4 -BD4
PRELIMINARY*
512MB – 2x32Mx72 DDR ECC SDRAM UNBUFFERED w/PLL
FEATURES
Double-data-rate architecture DDR200, DDR266 DDR333 JEDEC design specications 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 200 pin SO-DIMM package Package height options: AD4: 35.05 mm (1.38”) BD4: 31.75 mm (1.25”)
NOTE: Consult factory for availability of: RoHS compliant products Vendor source control options Industrial temperature option * This product is under development, is not qualied or characterized and is subject to change without notice.
DESCRIPTION
The W3EG7264S is a 2x32Mx72 Double Data Rate SDRAM memory module based on 512Mb DDR SDRAM components. The module consists of nine 64Mx8 DDR SDRAMs stacked in 54 pin TSOP packages mounted on a 200 pin FR4 substrate. This module is structured as 2 Ranks of 64Mx72 DDR SDRAM. 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.
OPERATING FREQUENCIES
DDR333@CL=2.5 Clock Speed CL-tRCD-tRP 166MHz 2.5-3-3 DDR266@CL=2 133MHz 2-2-2……
