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Samsung developers world's first 70nm 512Mbit DDR2 memory

Posted on Friday, October 14 2005 @ 01:21:53 CEST by


Samsung announced that it has completed development of the world-first 512Megabit DDR2 SDRAM using 70-nanometer processing, the smallest process technology yet applied to a DRAM device.

The new 70nm technology maintains continuity with the 80nm and 90nm processes Samsung now uses in most DRAM production today. However, the number of chips yielded per wafer will be at least 100% higher than could be obtained with 90nm technology.

After completing the first sub-micron DRAM process in 2002, Samsung introduced an 80nm version in 2003 and today has set another industry milestone with the new 70nm version for DRAM fabrication.

Several technological innovations leading to the new 70nm process technology for DRAM, include Samsung's Metal-Insulator-Metal (MIM) capacitor technology, and 3D transistor architecture known as "Sphere-shaped Recess Channel Array Transistor" (S-RACT). These advancements, respectively presented at the VLSI Symposiums of 2004 and 2005, have been applied to overcome the limitations of stacked DRAM cells and vastly improve the data refresh function, critical to the 70nm 512Mb DRAM.

Samsung plans to continue to follow an aggressive time-to-market DRAM implementation for leading nanometer process technologies as it did with its introduction of the 90nm process in mid-2004 and the 80nm in the second half of 2005. The 70nm process technology is scheduled to be used in production beginning in the second half of 2006 for 512M, 1G and 2G densities.


 



 

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