W3EG72129S-JD3 Datasheet, PDF (1/12 Pages) White Electronic Designs Corporation – 1GB - 2x64Mx72 DDR SDRAM REGISTERED w/PLL

White Electronic Designs
W3EG72129S-JD3
PRELIMINARY*
1GB – 2x64Mx72 DDR SDRAM REGISTERED w/PLL
FEATURES
Double-data-rate architecture
Clock speeds of 100MHz, 133MHz, 166MHz and
200MHz
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 = VCCQ = +2.5V (100, 133 and 166MHz)
• VCC = VCCQ = +2.6V (200MHz)
JEDEC standard 184 pin DIMM package
PCB height:
• JD3: 30.48mm (1.20")
DESCRIPTION
The W3EG72129S is a 2x64Mx72 Double Data Rate
SDRAM memory module based on 512Mb DDR SDRAM
component. The module consists of eighteen 64Mx8 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.
NOTE: Consult factory for availability of:
• RoHS compliant products
• Vendor source control options
• Industrial temperature option
Clock Speed
CL-tRCD-tRP
OPERATING FREQUENCIES
DDR400 @CL=3
200MHz
3-3-3
DDR333 @CL=2.5
166MHz
2.5-3-3
DDR266 @CL=2
133MHz
2-2-2
DDR266 @CL=2
133MHz
2-3-3
DDR266 @CL=2.5
133MHz
2.5-3-3
DDR200 @CL=2
100MHz
2-2-2
October 2005
Rev. 3
1
White Electronic Designs Corporation • [phone] • www.wedc.com