Datasheet > W3EG64255S202JD3XG

W3EG64255S202JD3XG

更新时间： 2024-11-07 03:03:11

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
13页	203K
描述
2GB - 2x128Mx64 DDR SDRAM REGISTERED, w/PLL

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W3EG64255S-JD3

White Electronic Designs

ADVANCED*

2GB – 2x128Mx64 DDR SDRAM REGISTERED, w/PLL

FEATURES

DESCRIPTION

ꢀ

Double-data-rate architecture

The W3EG64255S is a 2x128Mx64 Double Data Rate

SDRAM memory module based on 512Mb DDR SDRAM

component. The module consists of sixteen 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.

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

change or cancellation without notice.

Serial presence detect

Dual Rank

Power supply: V_CC2.5V 0.2V

JEDEC standard 184 pin DIMM package

• JD3: 30.48 (1.20")

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

April 2005

Rev. 3

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

12 3 4 5 6 7...13

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