SRAM - DDR / QUAD

DDR SRAMs GSI's SigmaDDR™ SRAMs are the acknowledged leader in the industry with their combination of capacity and performance. SigmaDDR transaction rates are unequaled by any competitors. SigmaDDR SRAMs are synchronous memories with a common read and write data bus. "DDR" refers to their ability to transfer 2 beats of data on the data bus in a single clock cycle. SigmaDDR memories are ideal for applications that alternate between read and write operations infrequently, at operating speeds of 250 MHz and above. GSI’s SigmaDDR devices are compatible with all competitor Double Data Rate SRAMs.

Quad SRAMs GSI's SigmaQuad™ SRAMs are the acknowledged leader in the industry with their combination of capacity and performance. SigmaQuad transaction rates are unequaled by any competitors. SigmaQuad SRAMs are synchronous memories with separate read and write data buses. "Quad"refers to their ability to transfer 4 beats of data (2 beats per data bus) in a single clock cycle. SigmaQuad memories are ideal for applications that alternate between read and write operations frequently, at operating speeds of 250 MHz and above. GSI’s SigmaQuad devices are compatible with all competitor Quad Data Rate SRAMs.

SigmaQuad™ SRAMs SigmaQuad SRAMs are synchronous memories with separate read and write data buses. “Quad” refers to their ability to transfer 4 beats of data (2 beats per data bus) in a single clock cycle. SigmaDDR™ SRAMs SigmaDDR SRAMs are synchronous memories with a common read and write data bus. “DDR” refers to their ability to transfer 2 beats of data on the data bus in a single clock cycle. GSI’s SigmaQuad and SigmaDDR devices are compatible with all competitor Quad Data Rate and Double Data Rate SRAMs, respectively. Features • 1.1G memory transactions per second (SigmaQuad-II+™) • Extensive range of design options—Quad & Double Data Rates, 1.5–2.5 cycle Read Latencies, 2- and 4-word data bursts • User-configurable signal termination and output drive settings • Densities for every performance point—18Mbit up to 288Mbit • Constructed using foundry-standard CMOS and 165-bump BGA packaging (both leaded and RoHS-compliant options)