DDR SDRAM captures data at twice the clock frequency, creating high-speed, low-power, high-density components. Micron’s line of DDR SDRAM products is available in a variety of densities, speeds, and configurations. Our DDR components are manufactured using our state-of-the-art process geometries.

Micron's DDR SDRAM supports a number of features, including source-synchronous interface, which simplifies timing (especially at higher speeds); an internal, pipelined 2n-prefetch architecture, which allows two data accesses per clock cycle; and a quad-bank architecture, which allows for reduction of row access overhead.

DDR is a mainstream memory used in all levels of desktop, notebook, and server platforms. These platforms provide a range of speeds in high-density applications; in the corporate, portable, and mid-range applications; and in gaming systems and workstation segments.

DDR SDRAM Part Catalog and Documentation

Designer's Toolbox: Resources for Designers

Micron's Designer's Toolbox provides resources for designers developing system-level products that take advantage of the DDR SDRAM memory architecture. From presentations and design resources to industry standards and specifications--you'll find the information you need in the Toolbox.

DDR SDRAM Presentations

• DDR Motherboard Design
• Designing Competitive DDR Platforms
• DDR SDRAM Main Memory Solutions - Product Timelines and Module Status

Design Resources

• System-Power Calculator
• Motherboard-Tested Memory
• Decoupling Capacitor Calculation for a DDR Memory Channel

Standards and Industry Specifications

JEDEC has defined a standard module PCB which consists of design schematic, trace routing, and stack-up. By defining a module design, we have achieved a consistent electrical performance for the system designer and end-user.

Micron complies with all standards hosted on the DDR unbuffered SODIMM common Gerber. We encourage all designers and end-users to insist on DDR Modules based on this design.

DDR SDRAM Component Standards for Registered, Unbuffered, and SODIMMs

• JEDEC Standard Data Sheet
• SSTL_2 Signaling Standard
• SPD Standards

DDR SDRAM 184-pin Registered DIMM Standards

• Registered DIMM Design Standard
• Mechanical Dimensions

DDR SDRAM 184-pin Unbuffered DIMM Standards

• PC1600 and PC2100 Unbuffered DIMM Design Standard 1.1
• Mechanical Dimensions

DDR SDRAM 200-pin Unbuffered SODIMM Standards (Unbuffered DIMM pinout)

• SODIMM Design Standard

Module Modeling

The PCB design files for all the DDR modules are included in the Common Gerber design package. These design files are from Cadence Allegro (.brd) and are directly compatible with Cadance SPECCTRAQuest simulation tools. There are translation tools available that will convert these files to formats that are compatible with Mentor ICX, QUAD (.xtk), and others. Contact your tool supplier for details.

DDR SDRAM FAQ's (More)

Related Documents

File	Title and Description	Last Update
	Optimize Networking and Server Performance with Micron's VLP Modules  Optimize Networking and Server Performance with Micron's VLP Modules   - Flyer describing the features and benefits of Micron's VLP modules	2006-02-01T00:00:00-07:00Feb 2006
	DDR333 and DDR400 Product FlyerDDR333 and DDR400 Product Flyer - Flyer for high-speed DDR333 and DDR400 SDRAM components, which support next-generation, high-performance desktops, notebooks, and servers	2005-08-01T00:00:00-06:00Aug 2005
	DDR/DDR2 Comparison ChartDDR/DDR2 Comparison Chart - A one-page table comparing DDR and DDR2 features side-by-side	2005-04-01T00:00:00-06:00Apr 2005

 

DDR SDRAM