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Toshiba mixes LBA to NAND flash memory

Posted: 09 Aug 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Toshiba? logical block addressing? NAND Flash memory? LBA-NAND?

Toshiba America Electronic Components Inc. (TAEC) and its parent, Toshiba Corp. have brought logical block addressing (LBA) to NAND Flash memory. Toshiba is launching LBA-NAND, a line-up of high-capacity devices integrating the new addressing method.

LBA-NAND is designed for use in mobile consumer products, such as digital audio players and personal media players, and will support manufacturers in developing products that can take full advantage of advances in NAND Flash memory capacity while minimizing development costs. Toshiba plans to release samples of the NAND Flash beginning in August 2006.

The logical address access method of LBA assigns each cell a unique address that is not geometry dependent. The first cell is simply 0, and numbering will continue to cover every cell. Memory increases can be accommodated by assigning a new address to each cell. This approach also allows block management, error correction and wear-leveling, all of which are conventionally controlled by the host side, to be handled on the memory side by the LBA-NAND controller. LBA-NAND is also fully compliant with the standard NAND Flash interface. As a result, LBA-NAND supports developers in minimizing development costs and improving time to market for new and upgraded products.

The progress in high resolution, high image and audio quality in digital consumer products has created products and markets that depend on high capacity data storage.

"As NAND advances to smaller process geometries, embedded designs will need to address higher levels of ECC, wear-leveling functions, and other NAND management capabilities," said Brian Kumagai, business development manager, NAND Flash, for TAEC. "LBA-NAND is a solution that speeds time to market, simplifies design and eliminates the need for the host to handle NAND management functions. Similar to a hard disc drive, LBA-NAND has built-in error correction and performs automatic bad block management, so all logically addressed blocks look good to the host."

Samples of the LBA-NAND will be available sometime this month.




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