ISSCC CONFERENCE, SAN FRANCISCO, CALIF., Feb. 10, 2009- Building on its leadership in multi-level cell (MLC) technology, SanDisk Corporation (NASDAQ: SNDK) today announced that it will begin mass-production of the world's first high performance 4-bits-per-cell (X4) flash memory. Using 43-nanometer (nm) process technology, this breakthrough enables 64-gigabit (Gb) memory in a single die - the highest capacity in the industry and suitable for the most demanding storage applications. SanDisk has also produced an advanced X4 controller, which is necessary to effectively manage the complexities and performance requirements of X4 memory. The X4 memory chip combines with the X4 controller chip in a multi-chip package (MCP) to provide a complete, integrated and low-cost storage solution.
"The development of X4 memory and controller technologies is a major milestone for flash memory storage that will provide significant long term benefits to SanDisk and play a critical role in future NAND flash scaling," said Khandker Quader, senior vice president, memory technology & product development, SanDisk. "64Gb X4 is the result of numerous key innovations, and demonstrates SanDisk's leadership in driving multi-bit flash memory with performance and cost suitable for storage-intensive applications such as music, movies, photos, GPS, games and more."
X4 Flash Memory Breakthrough
SanDisk co-developed the 64Gb X4 flash memory chip on 43nm technology with Toshiba Corporation, which cooperates with SanDisk in the development and manufacturing of advanced flash memory. The new 43nm 64Gb X4 chip is the highest capacity and highest density flash memory die in the world to enter production this year, boasting a 7.8MB/sec memory write performance that is comparable with current multi-level cell technologies. SanDisk's patented All-Bit-Line (ABL) architecture as well as the newly introduced three-step programming (TSP) and sequential sense concept (SSC) serve as key enablers to X4's impressive performance.
X4 Controller Technology Is Key
SanDisk developed a number of innovative solutions for advanced system management that address the difficulties posed by this complex 4-bits-per-cell technology. The X4 controller, developed and owned by SanDisk, utilizes a first-of-its-kind error correcting code (ECC) scheme specifically developed for use in storage systems, and tailored to support the 16 levels of distribution needed for 4-bits-per-cell.
"The inherent challenges in producing 4-bits-per-cell technology with good performance and low costs require advanced system level innovations in multi-level storage," said Menahem Lasser, vice president, future technologies and innovation, SanDisk. "Our X4 controller technology with its memory management and signal processing schemes is crucial to meeting the unique demands of 4-bits-per-cell memory, and demonstrates SanDisk's ability to conceptualize and produce sophisticated flash memory solutions."
Today, at the 2009 International Solid State Circuits Conference (ISSCC), SanDisk and Toshiba presented a technical paper describing the key technology advancements that led to the development of 64Gb 4-bits-per-cell NAND flash memory on 43nm technology node. This announcement comes one year after SanDisk unveiled its X3 (3-bits-per-cell NAND) technology at the 2008 ISSCC and was subsequently honored with the ISSCC 2009 Lewis Winner Outstanding Paper Award
SanDisk Corporation, the inventor and world's largest supplier of flash storage cards, is a global leader in flash memory - from research, manufacturing and product design to consumer branding and retail distribution. SanDisk's product portfolio includes flash memory cards for mobile phones, digital cameras and camcorders; digital audio/video players; USB flash drives for consumers and the enterprise; embedded memory for mobile devices; and solid state drives for computers. SanDisk (www.sandisk.com/corporate) is a Silicon Valley-based S&P 500 company, with more than half its sales outside the United States.
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* 1 megabyte (MB) = 1 million bytes; performance may vary depending upon host device.
SanDisk and the SanDisk logo are trademarks of SanDisk Corporation. Other brand names mentioned herein are for identification purposes only and may be the trademarks of their respective holder (s).
This press release contains certain forward-looking statements, including expectations for technological advancements, new product introductions, lower costs, applications, markets, and customers that are based on our current expectations and involve numerous risks and uncertainties that may cause these forward-looking statements to be inaccurate. Risks that may cause these forward-looking statements to be inaccurate include among others: unexpected delays, or difficulties in producing x4 NAND, new products may not be released when or in the capacities expected, market demand for our products may grow more slowly than our expectations or there may be a slower adoption rate for these products in new markets that we are targeting, our products may not perform as expected and the other risks detailed from time-to-time in our Securities and Exchange Commission filings and reports, including, but not limited to, our most recent Annual Report filed on Form 10-K and our subsequent Quarterly Reports filed on Form 10-Q. We do not intend to update the information contained in this press release.