W3EG6432S-D3 Datasheet, PDF (1/13 Pages) White Electronic Designs Corporation – 256MB - 32Mx64 DDR SDRAM UNBUFFERED

White Electronic Designs
W3EG6432S-D3
-JD3
PRELIMINARY*
256MB – 32Mx64 DDR SDRAM UNBUFFERED
FEATURES
Double-data-rate architecture
DDR200, DDR266, DDR333 and DDR400
• JEDEC design specifications
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)
JEDEC standard 184 pin DIMM package
• JD3 PCB height: 30.48 (1.20") max
DESCRIPTION
The W3EG6432S is a 32Mx64 Double Data Rate
SDRAM memory module based on 256Mb DDR SDRAM
components. The module consists of eight 32Mx8 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.
* This product is under development, is not qualified or characterized and is subject to
change without notice.
NOTE: Consult factory for availability of:
• Lead-free products
• Vendor source control option
• 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
May 2005
Rev. 6
1
White Electronic Designs Corporation • [phone] • www.wedc.com