MLC


Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.

MLC

(MultiLevel Cell) A NAND flash memory technology that stores more than one bit per cell. The original "single level cell" (SLC) flash memory uses one voltage threshold to define the two states of the bit (0 or 1). Multilevel cell (MLC) stores two bits in a cell (MLC), and triple level cell (TLC) stores three, which is accomplished by detecting four and eight voltage levels respectively (see below). However, the more bits per cell, the less longevity of the drive (see SSD write cycle). See NAND flash, StrataFlash and TRIM support.

Consumer MLC (cMLC) and Enterprise MLC (eMLC)
MLC generally refers to consumer MLC (cMLC), while enterprise MLC (eMLC) chips provide greater durability for servers, which handle huge volumes of reads and writes. Enterprise MLC drives feature faster transfer rates and extensive error detection and correction.

More Cells - From 2D to 3D
The multilevel cell technology doubled and tripled the bits per cell; however, moving from 2D single layer flash to 3D layers dramatically increased storage capacity (see NAND flash).


Single Level Cell (SLC) - One Bit
          0
          1

  MLC and eMLC - Two Bits
  Mainstream flash memory.
         00
         01
         10
         11

  Triple Level Cell (TLC) - Three Bits
        000
        001
        010
        011
        100
        101
        110
        111


Triple Level Cells in 3D
These solid state drives (SSDs) from Kingston Technology use flash chips with triple level cells in a 64-layer 3D architecture (see NAND flash). See Mini PCI Express.
References in periodicals archive ?
Current independent Non-Executive Director and Chair of the MLC Audit Committee, Sandra Birkensleigh, will continue on the Board.
As National Australia Bank's wealth management division, MLC is committed to providing investment, superannuation, insurance and financial advice to corporate, institutional and retail customers.
Note that when writing, the voltage to write each cell has to be precisely calibrated for MLC, whereas SLC can happily swing across the 1V - 3V range.
Spiller adds that MLC and RotoMetrics share similar histories, which is partly what makes the acquisition such a good fit for both companies.
Sources said, the MLC was reprimanded by former chief minister N.
With many base personnel being MLC employees, the success of Operation Tomodachi emphasized the high level of experience that stays intact even with a shifting and rotating tary and U.
MLC intends to demolish several buildings at the site that are contaminated with PCBs, EPA Region 2 spokesman John Senn said.
The CellCare technology reduces the cost of SSD implementation in the enterprise by enabling SSDs to use lower cost MLC Flash components.
She said the PAR program makes her work with MLC and the Aboriginal community that much more exciting and challenging.
The conference, which will include a question and discussion session, will be chaired by MLC chief executive Richard Lowe and delegates will be welcomed by MLC chairman Peter Barr.
TELECOMWORLDWIRE-27 April 2007-Intel and Micron Technology sample 50nm MLC NAND flash memory(C)1994-2007 M2 COMMUNICATIONS LTD http://www.