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1Mbit nvSRAM aimed at RAID storage, networking apps

05 Aug 2015

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Cypress Semiconductor Corp. has uncloaked a 1Mbit non-volatile static random access memory (nvSRAM) with a quad serial peripheral interface (SPI), which enables the device to exceed the data throughput of larger parallel interface devices with a smaller footprint. According to the company, the nvSRAM ensures high-throughput data capture in event of a power loss without batteries for RAID storage, industrial automation, computing and networking applications.


The CY14V101QS 1Mb nvSRAM with Quad SPI interface works at a clock speed of up to 108MHz and offers performance exceeding that of a parallel interface (x8 IO width, 45ns access time) device. The nvSRAM provides 24MB/s random read/write access time with unlimited write endurance, and 20-year data retention. With its reduced I/O width, it offers reduced pin count and board footprint in a 16-pin SOIC package and 24-ball BGA package. The device also includes an optional integrated real-time clock (RTC) with ±50ppm uncalibrated accuracy. The nvSRAM offers lower power consumption by a factor of 5.8 (active) and a factor of 10 (sleep) compared to competitive devices.

Cypress nvSRAMs are RoHS-compliant and directly replace SRAM, battery-backed SRAM, EPROM and EEPROM devices, offering reliable non-volatile data storage without batteries. Data transfers from the SRAM to the device's non-volatile elements take place automatically at power down. On power up, data is restored to the SRAM from the non-volatile memory. Both operations are also available under software control.

Cypress is using the technology in its flagship PSoC mixed-signal arrays, programmable clocks and other products. SONOS is compatible with standard CMOS technologies and offers numerous advantages including high endurance, low power and radiation hardness. The SONOS technology is qualified to run in Cypress' internal fab and in multiple foundry partner locations. The technology claims to provide a superior solution in terms of scalability and manufacturability compared to other magnetic based non-volatile memory technologies. Cypress has shipped more than two billion units that employ the SONOS process technology used in the nvSRAMs.

The CY14V101QS 1Mb nvSRAM is sampling with production expected in 3Q15.

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