XDRTM DRAM - Brochure - Elpida Memory - #1

Industry demand for memory bandwidth in next-generation digital consumer electronics, such as high-definition digital television, home servers and high-end 3-D graphics applications, is growing rapidly as more content becomes available and as processor performance becomes more robust.

Elpida Memory has developed ultra-high-speed 512Mb XDR DRAM based on the XDR memory interface technology developed by Rambus Inc., and these devices are currently in volume production.

Our 512Mb XDR DRAM devices provide an industry-leading data transfer rate of 6.4GB/s, 8.0GB/s, 9.6GB/s within a single device, through 3.2Gbps, 4.0Gbps, 4.8Gbps ultra-high-speed data transfer operation and x16-bit I/O configuration. This performance is 4 to 6 times the peak bandwidth of the latest DDR2 standard memory adopted in PC applications.

• 3.2Gbps, 4.0Gbps, 4.8Gbps Octal Data Rate (ODR) signaling

• 3.2GHz, 4.0GHz, 4.8GHz data rate, octuple the system clock transfer rate of 400MHz, 500MHz, 600MHz

• Bi-directional differential RSL (DRSL)

• Flexible read / write bandwidth allocation

• Minimum pin count

• On-chip termination

• Reduced system cost and routing complexity

• 6.4GB/s, 8.0GB/s, 9.6GB/s peak data transfer rate

• 8 banks: Bank-interleaved transactions at full bandwidth

• Dynamic request scheduling

• Early-read-after-write support for maximum efficiency

• Zero overhead refresh

• 1.8V VDD

• Small-swing I/O signaling (DRSL) (200mV)

• Power-down self-refresh support

• 104-ball FBGA

15. 1 8m m x 14. 56m m

• Ball-pitch

1.27mm / 0.8mm

9.6GB/s

8.0GB/s

6.4GB/s

1.6GB/s

1.3GB/s

0.8GB/s

0.6GB/s

DDR333 DDR400 DDR2-667 DDR2-800 XDR DRAM XDR DRAM XDR DRAM

3.2G 4.0G 4.8G