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QDR releases quad data rate SRAM specs

Posted: 14 Mar 2006     Print Version  Bookmark and Share

Keywords:Dylan McGrath  QDR Consortium  QDR static RAM  QDRII+ and double data rate (DDR)II+ 

The Quad Data Rate (QDR) Consortium has recently released complete architectural specifications for the QDR static RAM products, QDRII+ and double data rate (DDR)II+.

According to the QDR Consortium, which includes influential memory suppliers Cypress Semiconductor Corp., Integrated Device Technology Inc., NEC Electronics Corp., Renesas Technology Corp. and Samsung Electronics Co. Ltd, the new products will operate at speeds up to 500MHz, up to 50 times faster than existing QDRII and DDRII products. The standard has been developed for network switches, routers and other communications applications, the consortium said.

Additionally, QDRII+ and DDRII+ products will deliver a higher bandwidth than their predecessors, up to 72Gbps, while using the same footprint and a 165-pin, FBGA package, according to the consortium.

The consortium said the QDR and DDR families of SRAM will provide designers with a complete memory solution for almost any network application. QDRII+ devices will have two ports operating independently at twice the selected clock rate, allowing a transfer of four data words in a single clock cycle, the consortium said, while the DDRII+ devices will allow double data rate transfers over a common I/O data bus.

Consortium members expect to have QDRII+ and DDRII+ samples available in the second quarter. The consortium said that specifications for QDRII+ and DDRII+ SRAMs would be publicly available on the QDR SRAM website in the near future.

- Dylan McGrath
EE Times




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