Products

The new 72 Mbit fast SRAMs built using 45 nm process technology enable advanced designs for leading-edge networking equipment, especially Gigabit Ethernet solutions. The low-priced 533 MHz DDRII + SRAMs enable faster packet lookup in Forwarding Information Bases (FIBs), while the 533 MHz QDRII + SRAMs allow higher speed packet buffering in next-generation switches and routers.

Both types of devices conform to the QDR Consortium industry standards. They achieve the high levels of performance and reliability essential for networking products that accelerate Internet traffic, enhance broadband connectivity and facilitate innovative web-based services.

These high-performance Renesas devices are upwarded compatible with the popular 36 Mbit QDR and DDR SRAMs we have long been shipping in high volume to leading telecommunication and data communication companies wolrdwide.

• 36 Mbit density in QDR-II and DDR-II SRAMs, with roadmaps to higher densities
• Multiple configurations: x9, x18, x36
• Fast clock cycle time: 3.0 ns (300 MHz) to 6.0 ns (167 MHz)
• Independent read & write data ports with concurrent transactions
• 100% bus utilisation DDR read and write operation
• Two-tick or four-tick bursts for reduced address frequency
• Wide data-valid window: 65% of clock cycle
• Small form-factor PBGA package (with transition to lead-free construction)
• High quality/high reliability
• Smallest IDDAC (650 mA, max.; 485 mA, typ. [36 Mbit QDR II , 2WB x18 I/O @ 250 MHz])
• Small variation between clock access time vs. cycle time
• JTAG boundary scan

• Store the data used to decide the routing patterns of incoming packets in Forwarding Information Bases (FIBs)
• Buffer packets in output ports and switch fabrics during packet processing
• Identify causes of data traffic congestion by collecting and measuring data flowing to routers or switches
• Track metrics in network activity using counters
• Capture statistics for implementing billing and system diagnostics