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SanDisk Announces World’s First High Performance 4-Bits-Per-Cell (X4) Flash Memory

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#1
Building on its leadership in multi-level cell (MLC) technology, SanDisk Corporation 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 Dr. 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.

Source: SanDisk
 
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#2
Is that all?

I'm sorry for being so critical...

But I'm just so sick and tired of all the "Blah blah blah blah..." NONSENSE coming from the memory & media world.

7.8MB/second? on chips that we may expect to find in 64/128 GB devices... holy hell that's APPALLINGLY SLOW!

My 8GB Transcend V60 writes at 11MB/s+ and that's KILLER slow when you actually have things to do.

I cant even begin to imagine 32/64GB at 7.8Mb/s (~68 MINUTES to copy 32Gb FFS!)

Never mind the fact that 2 years after launch its still nearly impossible to FIND any flash drive as large as 32Gb in most country's, and when you DO they cost almost as much as a 750GB HDD (3.5") (NOT in the USA - But almost everywhere else)

WHAT THE HELL MEMORY & MEDIA MARKET? .. SERIOUSLY...

My irrelevant opinion is that you stop imagining up fictional paper launches of crazy memory innovations that never seem to actually result in any tangible product, and rather start RELEASING SOME PRODUCTS...

So we can start buying them...

And get the prices down to a point that actually RELATES in some way, shape, or form, to their storage capacity...
 
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#3
Multiple chips are used together to get the write speed we see on current SSD's.
 
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#4
Fair enough...

I suppose my rant is really aimed at the useless state of affairs that "Flash Drives" are in...