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Toshiba unveils MLC NAND-flash-based SSDs

Posted: 14 Dec 2007     Print Version  Bookmark and Share

Keywords:MLC NAND  flash memory  solid-state drives 

SSD with MLC NAND flash

Toshiba Corp. (Toshiba) and Toshiba America Electronic Components Inc. (TAEC) have announced their entry into the emerging market for NAND-flash-based solid-state drives (SSDs) with a series of products featuring multi-level cell (MLC) NAND flash memory. Offered in a range of form factors and capacities, Toshiba's solid-state drives are designed primarily for notebook PCs. They will be showcased at the Consumer Electronics Show in Las Vegas in January.

Moving NAND-based storage architecture forward, Toshiba's first solid-state drives offer three capacities: 32Gbytes, 64Gbytes and 128Gbytes, in three form factors: an embedded module, and 1.8in and 2.5in drive enclosures. SSDs realise lower power consumption, a faster boot time, higher reliability, improved performance and no mechanical sound compared to hard disk drives, but market penetration has been held back by low densities and high prices.

The SSDs integrate an original MLC controller supporting fast read-write speed, parallel data transfer, and wear-leveling, and achieve performance levels comparable to those of single-level cell NAND-flash-based SSDs. By applying MLC technology, Toshiba has realised a 128Gbyte capacity in a 1.8in form factor. Toshiba expects the launch of its MLC NAND-based line-up to speed up the acceptance of solid-state memory in laptops and digital consumer products and to widen the horizons of the NAND flash market.

The products utilise NAND flash memory fabricated with 56nm process technology, along with controller chips and DRAM, on a 70.6-by-53.6-by-3mm platform. The maximum read speed is 100MBps, and the maximum write speed is 40MBps with the SATA II interface (transfer rate of 3Gbps), which is compliant with a high-speed serial interface. The rated operating life is 1,000,000hrs.

The devices use Serial ATA-II (3Gbps) interface. Voltage is rated at 3.3V (Module, 1.8in type) or 5V (2.5in type). Maximum writing speed is at 40MBps while Maximum reading speed is at 100MBps (both in sequential mode). Operating temperature is from 0 to 70?C.

The 32Gbyte, 64Gbyte and 128Gbyte Module SATA will sample in February 2008 and will enter mass production in March 2008. The 32Gbyte, 64Gbyte and 128Gbyte 1.8in and 2.5in SATA will sample in April 2008 and will enter mass production in May 2008.




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