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Samsung makes 'densest' NAND flash at 51nm

Posted: 02 May 2007 ?? ?Print Version ?Bookmark and Share

Keywords:16Gbit NAND flash memory? 51nm process technology? densest NAND flash?

Samsung's16Gbit NAND flash

Samsung Electronics Co. Ltd announced it has begun mass producing 16Gbit NAND flash, said to be the highest-capacity memory chip available. The company said it will fabricate the devices in 51nm, the finest process technology to be used in memory mass production to date.

Samsung's 51nm NAND flash chips can be produced 60 percent more efficiently than those produced with 60nm process technology. The company achieved this new migration in eight months after announcing production of its 60nm 8Gbit NAND flash last August.

'Densest' NAND flash
"In rolling out the densest NAND flash in the world, we are throwing open the gates to a much wider playing field for flash-driven consumer electronics," said Jim Elliott, director, flash marketing, Samsung Semiconductor. "To minimize production costs and improve performance, we have applied the finest process technology a 'half generation' ahead of the industry, which is introducing 55nm and higher."

The new 16Gbit chip, which has a multilevel cell structure, can facilitate capacity expansion by offering 16Gbytes of memory in a single memory card. Furthermore, by applying the new process technology, Samsung has accelerated the chip's read and write speeds by approximately 80 percent over current MLC data processing speeds.

NAND flash memory reads and writes data in units called "pages." The 60nm NAND flash memory is designed with a 2Kbyte page size, but the 51nm 16Gbit version can process data in 4KByte pages, nearly doubling the data rate. The product also maintains the same 4bit error-correcting code (ECC) capability as that of 60nm NAND, allowing customers to use existing system interfaces with only minor firmware upgrades. With its 4bit ECC, Samsung eliminates the need to secure a better ECC capability to assure sufficient reliability, which would have required new costly controllers.

Samsung will offer an optimized suite of flash software and firmware-incorporated storage devices for music phones and MP3 players to support 4KByte pages. It also will provide a multiplane performance optimization feature and wear-leveling for improved reliability. Memory cards and MP3 controllers to support the 4KByte-page are already available,

User-created content
Technology migration to 16Gbit is expected to boost the recent explosive demand for high-density data storage in high-end music phones and the phenomenal trend toward user-created content. As the demand for video content grows stronger by the day, products that feature extended recording time of high-resolution video footage, including mid-to-high-range digital cameras, will particularly benefit from the high capacity and performance of 16Gbit NAND flash memory.

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