M-Systems

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M-Systems was a Nasdaq-listed Israeli producer of flash storage memory founded in 1989, best known for its DiskOnChip 2000 line of products for embedded computers.

The company was acquired by SanDisk in 2006^[1].

[edit] DiskOnChip

The DiskOnChip product line became popular because they could easily be integrated into small embedded applications. The device was supplied as a module in 32-pin dual in-line (DIP) packaging with a pinout and electrical interface compatible with a standard JEDEC socket for memory chips. It employed a memory-mapped interface with an 8-kibibyte window for models of all capacities (16MB-1GB). Internally, a DoC module contained a controller that implemented error correction, bad block re-mapping and wear levelling functions that were used to implement a file system, TrueFFS, for which the company provided software development kits.^[2]

In early 2007, SanDisk^[3] announced the End of Life for the DiskOnChip 2000 product line^[4], suggesting customers migrate to the uDOC (uDiskOnChip Embedded USB Flash Disk) product, CompactFlash or SecureDigital cards, all of which are not directly compatible, requiring interface redesign.