DDR2 DRAM Tops Out At 800 Mbits/s

April 28, 2005

DDR2 SDRAMs reached a new speed plateau with Elpida Memory's 800-Mbit/s version for a 256-Mbit device. The monolithic DDR2 DRAM comes with either an 8- or 16-bit data bus, both of which target DDR2 unbuffered dual-inline memory modules (DIMMs). Such memory modules are ideal for high-end PCs and workstations. They're also a good match for the latest processor front-side buses, which help PCs maximize data throughput.

The EDE2508ABSE and EDE2516ABSE are organized as 8 Mwords by 8 bits by four banks and as 4 Mwords by 16 bits by four banks, respectively. They're produced using the company's advanced 0.10-µm process and come in 60-ball FBGA (EDE2508ABSE) and 84-ball FBGA (EDE2516-ABSE) packages. The memories operate from a low, 1.85-V supply and feature a burst length of 4 or 8 and a CAS latency (CL) of 5.

Samples of both devices are available now. Contact the company for volume pricing.

Elpida Memory Inc. www.elpida.com

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About the Author

Dave Bursky

Technologist

Dave Bursky, the founder of New Ideas in Communications, a publication website featuring the blog column Chipnastics – the Art and Science of Chip Design. He is also president of PRN Engineering, a technical writing and market consulting company. Prior to these organizations, he spent about a dozen years as a contributing editor to Chip Design magazine. Concurrent with Chip Design, he was also the technical editorial manager at Maxim Integrated Products, and prior to Maxim, Dave spent over 35 years working as an engineer for the U.S. Army Electronics Command and an editor with Electronic Design Magazine.