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64Gb NAND Flash uses toggle DDR 2 interface

Posted: 16 May 2011 ?? ?Print Version ?Bookmark and Share

Keywords:memory chip? 64Gb NAND? toggle?

Samsung Electronics Co. Ltd is starting production of a high-performance toggle DDR 2.0 multilevel-cell (MLC) memory chip. The new NAND flash chip features a 64Gb density, made possible by using an advanced 20nm class process technology. The chip is designed to support the high-performance requirements of mobile devices such as smartphones, tablets and solid state drives (SSDs).

Equipped with a toggle DDR (Double Data Rate) 2.0 interface, the new 64Gb MLC chip can transmit data at a bandwidth of up to 400Mbps. This provides a ten-fold increase over the 40Mbps Single Data Rate (SDR) NAND flash memory in widespread use today, and a three-fold boost over 133Mbps toggle DDR 1.0, 32Gb NAND flash memory, which Samsung was first to produce in 2009.

The high-speed bandwidth of toggle DDR 2.0 is expected to better support the ongoing shift toward advanced interfaces, as more mobile and consumer electronics devices requiring added performance and higher densities adopt new interfaces such as USB 3.0 and SATA 6.0Gbps.

Further, the new 64Gb MLC NAND chip offers an approximate 50 percent increase in productivity over 20nm-class 32Gb MLC NAND chips with a toggle DDR 1.0 interface and more than doubles the productivity of 30nm-class 32Gb MLC NAND.

According to IHS iSuppli, the worldwide NAND flash memory market will continue to steadily grow from approximately 11 billion 1GB equivalent units in 2010 to 94 billion 1GB equivalent units in 2015 with a CAGR of 54 percent. In addition, shipments of NAND flash memory with 64Gb or higher density are expected to account for approximately 70 percent of total NAND flash memory shipments in 2012, a huge increase from the three percent level in 2010.





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