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LSI picks Cypress nvSRAMs for SAS HBAs

12 Sep 2013

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Cypress has announced that LSI has chosen its parallel nonvolatile Static Random Access Memories (nvSRAMs) for the new 12Gb/s SAS host bus adapters (HBAs) designed for high-performance servers, workstations and external storage systems.

Cypress said the nvSRAMs will give the SAS HBAs high-speed and low-voltage memory that will improve LSI's solutions. The parallel nvSRAM is also capable of operating at varying voltages and functioning as a journal memory.

LSI recently introduced the LSI SAS 9300 HBA product line. The products are intended to accelerate storage and meet the high-performance application needs for a range of environments, including transactional databases, Web 2.0, data mining, video streaming and editing.

Cypress's parallel nvSRAMs offer access times as low as 25 ns and they feature infinite read, write and recall cycles, with 20-year data retention, making them viable for applications requiring continuous high-speed writing of data and nonvolatile data security without battery back-up.

"The transition to 12Gb/s SAS has been fuelled by the needs of businesses to manage an ever-increasing volume of storage in data centres," said Robin Wagner, senior director of marketing at LSI. "We have had proven success with nvSRAMs as a journal memory, and they met our stringent performance requirements for the LSI 9300 product family. The flexibility of parallel nvSRAMs to extend operation below 3V simplified the design process and accelerated our time to market."

The parallel nvSRAMs are available in densities from 256 kb to 8 Mb in multiple configurations. The devices operate over full industrial temperature grade and are available in industry-standard packages such as 32-SOIC, 44-TSOPII, 48-SSOP, 48-FBGA and 54-TSOPII.

Cypress's nvSRAMs are manufactured on its silicon oxide nitride oxide silicon (SONOS) embedded nonvolatile memory technology. The products are viable solutions for applications such as RAID systems, PLCs, industrial data loggers, computing and networking systems, motor drives, routers and switches, avionics, defence systems, and gaming systems.

Cypress is using the SONOS process technology in its PSoC mixed-signal arrays, programmable clocks and other products. SONOS is compatible with standard CMOS technologies and qualified to run in Cypress's internal fab and in multiple foundry partner locations. Cypress said it has shipped over one billion units that employ the SONOS process technology utilised in the nvSRAMs.

Cypress's nvSRAMs use charge stored on an external capacitor instead of a battery, making the devices compatible with standard PCB assembly processes. Cypress's nvSRAMs are ROHS-compliant and directly replace SRAM and battery-backed SRAM (BBSRAM) products, allowing for nonvolatile data storage. Data transfers from the SRAM to the device's nonvolatile elements take place automatically at power down. On power up, data is restored to the SRAM from the nonvolatile memory.

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