Renesas Technology Announces 72-Mbit Quad Data Rate II+ (QDR II+) and Double Data Rate II+ (DDRII+), High-speed SRAM Product Family for High-End Routers and Switches in Next-Generation Communication Networks
These SRAM products achieve the industry’s fastest level operating speed and are compliant with the QDR Consortium industry standard. Additionally, this release also includes 72-Mbit QDRII and DDRII SRAM devices. QDR™ II (Quad Data Rate) SRAMs and DDR II (Double Data Rate) SRAMs are the ideal memory devices for next generation networking and communications systems. These ultra-fast devices can support high bandwidth systems that require memories capable of very high operating frequencies combined with low latencies and full cycle utilization. QDR II SRAMs can provide double data rate (DDR) operation on each data pin through independently operated read and write ports, and can transfer four words of data on one clock cycle. This allows for bus contention to be virtually eliminated between the memory controller and the SRAM. Additionally, QDR II SRAMs utilize high speed I/Os via HSTL (high speed transceiver logic) to support next generation networking systems. The QDR-II SRAMs can support high end network switches, routers and other communication solutions based on LA-1 (Standard of the Look-Aside Processor Interface) designs. They are especially designed to fulfill data rates corresponding to network standards such as OC-48, OC-192 and OC-768.In the case of DDR II SRAMs, the data is written or read twice every clock cycle. This provides for a significantly higher transfer rate than standard synchronous SRAM devices. In applications that require continuous read/write capability such as in look-up tables for network switches and routers, DDRII SRAMs are an ideal solution.The QDR-II SRAM and DDR-II SRAM family was defined by the members of the QDR SRAM Consortium and ratified through JEDEC. The devices are available in x9, x18 and x36 configurations and frequencies ranging from 167MHz up to 333MHz. They provide low volt operation at 1.8V and are available in standard BGA packages…
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72-Mbit QDR™ II+ SRAM and DDR II+ SRAM Family
(Pictures: Renesas)
Press Releases:
72-Mbit-QDRII-and-QDRII+-SRAM
72-Mbit-DDRII-SRAM 03
72-Mbit-DDRII+-SRAM 03
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