W3E16M72SR-266BC datasheet(1/16 Pages) WEDC

Part #	W3E16M72SR-266BC

Description	16Mx72 Registered DDR SDRAM

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Manufacturer	WEDC [White Electronic Designs Corporation]

Direct Link	http://www.whiteedc.com

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

White Electronic Designs

W3E16M72SR-XBX

February 2005

Rev. 2

16Mx72 Registered DDR SDRAM

Registered for enhanced performance of bus

speeds of 200, 225, and 250 MHz

Package:

• 219 Plastic Ball Grid Array (PBGA), 32 x 25mm

2.5V ±0.2V core power supply

2.5V I/O (SSTL_2 compatible)

Differential clock inputs (CK and CK#)

Commands entered on each positive CK edge

Internal pipelined double-data-rate (DDR)

architecture; two data accesses per clock cycle

Programmable Burst length: 2,4 or 8

Bidirectional data strobe (DQS) transmitted/

received with data, i.e., source-synchronous data

capture (one per byte)

DQS edge-aligned with data for READs; center-

aligned with data for WRITEs

DLL to align DQ and DQS transitions with CK

Four internal banks for concurrent operation

Two data mask (DM) pins for masking write data

Programmable IOL/IOH option

Auto precharge option

FEATURES

25

32

66

TSOP

66

TSOP

66

TSOP

66

TSOP

66

TSOP

11.9

22.3

Monolithic Solution

Actual Size

S

A

V

I

N

G

S

Area

I/O

Count

5 x 265mm2 + 2 x 105mm2 = 1536mm2

5 x 66 pins + 2 x 48 = 426 pins

800mm2

47%

219 Balls

49%

W3E16M72SR-XBX

White Electronic Designs

48

TSOP

12.6

48

TSOP

12.6

8.3

11.9

22.3

Auto Refresh and Self Refresh Modes

Commercial, Industrial and Military Temperature

Ranges

Organized as 16M x 72

Weight: W3E16M72SR-XBX - 2.5 grams typical

BENEFITS

47% SPACE SAVINGS

Glueless Connection to PCI Bridge/Memory

Controller

Reduced part count

Reduced I/O count

• 49% I/O Reduction

Reduced trace lengths for lower parasitic

capacitance

Suitable for hi-reliability applications

Laminate interposer for optimum TCE match

Upgradeable to 32M x 72 density (contact factory

for information)

* This product is subject to change without notice.

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