W3EG72128S335D3S
| Model | W3EG72128S335D3S |
| Description | DDR DRAM Module, 128MX72, 0.7ns, CMOS, DIMM-184 |
| PDF file | Total 12 pages (File size: 296K) |
| Chip Manufacturer | MICROSEMI |
White Electronic Designs
1GB – 2x64Mx72 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
Dual Rank
Power supply:
• V
CC
= V
CCQ
= +2.5V ± 0.20V (100, 133, 166MHz)
• V
CC
= V
CCQ
= +2.6V ± 0.10V (200MHz)
JEDEC Standard 184 pin DIMM package
• PCB height: 30.48 (1.20")
NOTE: Consult factory for availability of:
• RoHS compliant products
• Vendor source control options
• Industrial temperature option
W3EG72128S-D3
-JD3
ADVANCED*
DESCRIPTION
the W3EG72128S is a 2x64Mx72 Double data Rate
SDRAM memory module based on 512Mb DDR SDRAM
components. The module consists of eighteen 64Mx8
DDR SDRAMs in 66 pin TSOP packages mounted on a
184 pin FR4 substrate.
Synchronous design allows precisse 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 or cancellation without notice.
OPERATING FREQUENCIES
DDR400 @CL=3
Clock Speed
CL-t
RCD
-t
RP
200MHz
3-3-3
DDR333 @CL=2.5
166MHz
2.5-3-3
DDR266 @CL=2
133MHz
2-2-2
DDR266 @CL=2.5
133MHz
2.5-3-3
DDR200 @CL=2
100MHz
2-2-2
May 2005
Rev. 3
1
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
