器件名称: W3EG7218S-AD4
功能描述: 128MB - 16Mx72 DDR SDRAM UNBUFFERED w/PLL
文件大小: 164.53KB 共13页
简 介: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 Package height options: AD4: 35.5mm (1.38") and BD4: 31.75mm (1.25")
* This product is under development, is not qualied or characterized and is subject to change without notice.
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.
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 16 17 18 19 20 21 22 23 ……
