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GSI Technology shipping 144Mbit SigmaQuad and SigmaDDR SRAMs

GSI 144Mbit SigmaQuad SRAMs
Other GSI News

gsi pic GSI Technology is shipping 144Mbit SigmaQuad™-II/-II+ and SigmaDDR™-II/-II+ SRAMs. With multiple types, organizations, and speeds, they are an excellent choice as an upgrade to current designs that require more high speed memory or to new high performance designs that require higher speeds.

GSI Technology's 144Mbit family of SigmaQuad-II+ and SigmaDDR-II+ SRAMs achieve higher operating frequencies, in part, because they are designed with a longer read pipeline. When described in terms of cycles of latency, Type-II SRAMs demonstrate a 1.5 cycle read latency, while Type-II+ SRAMs are offered with read latencies of both 2.0 and 2.5 cycles. The multiple read latency selections offered allow designers more flexibility to optimize SRAM performance in their particular applications.

Type-II+ SRAMs offer optional On-Die Termination (ODT) to improve signal integrity. ODT can be enabled or disabled via the ODT pin—a Low (0) disables ODT while a High (1) enables ODT. Type-II+ SRAMs also offer an Output Valid signal (QVLD), that provides early warning of impending valid data and is used to facilitate synchronization of RAM data with the clock domain of the host chip using the SRAM.

Like all SigmaQuad/SigmaDDR SRAMs, these devices include FLXDrive-II output impedance control. The same ZQ pin and external RQ resistor used to program input impedance is also used to program output driver impedance.

Typical applications include high performance switches, routers, base stations and specialized military, medical, test and measurement equipment.

For more information on GSIs SigmaQuad™ portfolio mail ACAL Technology

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