W3EG72255S335JD3

更新时间： 2024-01-23 10:33:06

品牌	Logo	应用领域
WEDC		动态存储器双倍数据速率
页数	文件大小	规格书
15页	248K
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W3EG72255S335JD3 数据手册

W3EG72255S-D3

-JD3

White Electronic Designs

-AJD3

PRELIMINARY*

2GB – 2x128Mx72 DDR SDRAM REGISTERED ECC, w/PLL

FEATURES

DESCRIPTION

ꢀ

Double-data-rate architecture

The W3EG72255S is a 2x128Mx72 Double Data Rate

SDRAM memory module based on 512Mb DDR SDRAM

components. The module consists of eighteen 256Mx4

stacks, in 66 pin TSOP packages mounted on a 184 pin

FR4 substrate.

ꢀ

DDR200, DDR266 and DDR333:

• 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

ꢀ

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.

Serial presence detect

* wThis product is under development, is not qualiﬁed or characterized and is subject

to change without notice.

Dual Rank

Power supply: V_{CC =}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

OPERATING FREQUENCIES

DDR333 @CL=2.5

DDR266 @CL=2

133MHz

DDR266 @CL=2

133MHz

DDR266 @CL=2.5

133MHz

DDR200 @CL=2

100MHz

Clock Speed

CL-t_RCD-t_RP

166MHz

2.5-3-3

2-2-2

2-3-3

2.5-3-3

2-2-2

November 2004

Rev. 2

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

12 3 4 5 6 7...15

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W3EG72255S335JD3S	WEDC	DDR DRAM Module, 256MX72, 0.7ns, CMOS, DIMM-184	获取价格
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W3EG72255S335JD3XG	WEDC	2GB - 2x128Mx72 DDR SDRAM REGISTERED ECC, w/PLL	获取价格
W3EG72255S-AJD3	WEDC	2GB - 2x128Mx72 DDR SDRAM REGISTERED ECC, w/PLL	获取价格