參數(shù)資料
型號: W3EG2256M72ASSR262JD3MG
廠商: MICROSEMI CORP-PMG MICROELECTRONICS
元件分類: DRAM
英文描述: 512M X 72 DDR DRAM MODULE, 0.7 ns, DMA184
封裝: ROHS COMPLIANT, DIMM-184
文件頁數(shù): 1/14頁
文件大?。?/td> 217K
代理商: W3EG2256M72ASSR262JD3MG
1
White Electronic Designs
November, 04
Rev. 3
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
W3EG2256M72ASSR-JD3
-AJD3
PRELIMINARY*
FEATURES
Double-data-rate architecture
DDR200, and DDR266:
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: VCC = 2.5V ± 0.2V
JEDEC standard 184 pin DIMM package
Package height options:
JD3: 30.48mm (1.2"),
AJD3: 28.70mm (1.13")
NOTE: Consult factory for availability of:
RoHS compliant products
Vendor source control options
Industrial temperature option
DESCRIPTION
The W3EG2256M72ASSR is a 2x256Mx72 Double
Data Rate SDRAM memory module based on 1Gb DDR
SDRAM components. The module consists of eighteen
512Mx4 stacks, 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.
* This product is under development, is not qualied or characterized and is subject to
change without notice.
4GB – 2x256Mx72 DDR SDRAM REGISTERED ECC, w/PLL
OPERATING FREQUENCIES
DDR266 @CL=2
DDR266 @CL=2.5
DDR200 @CL=2
Clock Speed
133MHz
100MHz
CL-tRCD-tRP
2-2-2
2-3-3
2.5-3-3
2-2-2
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