Digital ICs/DSP: Small0Outline DDR2 DIMMs Deliver 1 Gbyte At 533 Or 400 MHz

April 12, 2004

Small-outline DDR2 DIMMs now come in 1-Gbyte capacities with bus speeds of 533 or 400 MHz. In addition, the company released samples of its 256-Mbit DDR2 SDRAMs, which are also available in 533- and 400-MHz speed grades. Organized as 128 Mwords by 64 bits by 2 banks, the memory DIMMs use the JEDEC-standard 200-pin connector and measure just 3.8 mm thick. Versions include burst lengths of 4 or 8 and a CAS latency of 3, 4, or 5. The modules also incorporate off-chip drivers and on-die termination for improved signal quality. Sample prices for the 533- and 400-MHz small-outline DIMMs are $1050 and $680, respectively. Prices for the 533- and 400-MHz DDR2 SDRAMs are $19 and $12 each, respectively.

Elpida Memory Inc.www.elpida.com

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.