TDK's Industrial SSD Contains Control Chip

Mar 22, 2012
Jyunichi Oshita, Nikkei Electronics
TDK's "eSSD"
TDK's "eSSD"
[ If it clicks, the expanded picture will open ]

TDK Corp will release the "eSSD," an industrial SSD that contains NAND flash memory and a controller chip in the same package, in April 2012.

Because its package is as small as 17 x 17mm, it can be dealt like a single chip. It has an SATA interface whose maximum data transmission speed is 3Gbps. TDK considers the eSSD as the SATA version of the eMMC, which is a common NAND flash memory to be embedded in devices.

Compared with existing SSDs for industrial instruments that use external controller chips, the eSSD enables to reduce footprint by 2/3. The capacity of the eSSD is 1-4 Gbytes, and the new product is targeted at industrial instruments that are required to boot an operating system quickly such as multifunction printers and POS (point-of-sale) systems.

The eSSD is the industry's first industrial SSD that contains NAND flash memory and a controller chip in the same package, TDK said. For the NAND flash memory, four single-level chips (SLCs) made by using 2X-3Xnm process technologies are used. And they were combined with the "GBDriver RS3," a controller chip developed by TDK, which features a powerful error correction function, algorithm for preventing power shutdown, automatic refresh function, etc.

The data writing and reading speeds of the eSSD are slightly less than 30MBps and 55MBps, respectively, which are higher than those of existing eMMCs. It can be rewritten about 50,000 times. And a product life of 10 years is assured under normal use conditions for industrial instruments.