TOKYO -- Hitachi Ltd. today announced plans to join Cypress, IDT, Micron, NEC, and Samsung in joint development of Quad Data Rate (QDR) SRAM devices for high-performance communications applications.
Two years ago the QDR consortium was formed by Cypress Semiconductor Corp., Integrated Device Technology Inc., and Micron Technology Inc. (see July 26, 1999, story). NEC Corp. and Samsung Electronics Co. Ltd. later joined the three U.S. companies to define and develop additional standards for Quad Data RAte and Double Data Rate (DDR) SRAMs for a range of communications applications, such as switches and routers.
The QDR group is competing with another consortium of memory suppliers, called SigmaRAM, which is also pursuing high-speed SRAM specifications for communications and other systems applications (see June 18 story).
QDR static RAMs have two ports, which independently run at twice the rate of conventional synchronous memories. Depending on the applications, products in the QDR SRAM family can more than double SRAM device efficiency per pin, according to proponents.