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High speed MRAM memory for FPGAs

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By Nick Flaherty

Everspin Technologies has started sampling a new family of high speed SPI/QSPI/xSPI interface MRAM devices that can boost the performance of FPGAs.

The EMxxLX is the world’s highest performance persistent memory with full read and write bandwidth of 400 Mbit/s through the new JEDEC expanded Serial Peripheral Interface (xSPI) standard interface.

The new JEDEC xSPI standard is expected to become the most prevalent way to access data memory and code storage in embedded systems. The EMxxLX will be supported by the xSPI Multiple Bus Memory Controller from Everspin’s partner, Synaptic Laboratories Ltd (SLL). SLL’s xSPI MBMC IP supports most popular FPGA device families, to be followed by ASICs, at speeds up to the full 400 Mbytes/s wire speed.

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The family has densities from 8Mbit up to 64Mbit for industrial IoT and embedded systems applications. Everspin has optimized its proprietary Spin-transfer Torque MRAM (STT-MRAM) technology for 10 year data retention, virtually unlimited write cycle endurance and a 200MHz DDR clock rate over a full industrial temperature range of minus 40C to plus 85C.

“The EMxxLX family provides a breakthrough level of performance along with an ease-of-use approach. This is achieved by conforming to a broad range of SPI/QSPI/xSPI industry standards, and by bringing extremely high bandwidth, low latency, non-volatile writing capability. These features will both enhance and simplify system design for use with practically all microcontroller, microprocessor, and FPGA platforms already in the market,” said Sanjeev Aggarwal, President and CEO of Everspin Technologies.

The devices are offered in two package types, a 24-ball BGA and 8-pin DFN, both industry standard packages.

Customers are currently evaluating samples. “With Everspin’s announcement of their latest EMxxLX product family, and the increase in performance and densities, Siemens is eager to explore the advantages for our next generation platform evaluation,” said Wolfgang Ernst, Senior Key Expert, Siemens.

Everspin provides a NOR compatibility mode which mimics NOR flash page restriction and associated address wrapping behaviour. It also provides PROGRAM/ERASE commands with support for subsectors, sector and chip erase. This allows NOR-based applications to run virtually unaltered on MRAM with the higher write speeds and lower energy consumption.

“The EMxxLX family changes the non-volatile memory game for all embedded designs. When combined with SLL’s xSPI Multiple Bus Memory Controller, and COTS development boards, embedded system designers will be able to rapidly take advantage of the exciting benefits of these memories,” said Benjamin Gittins, CTO of Synaptic Laboratories Ltd.

Volume production shipments of the EMxxLX series will be available in the second half of 2022.

www.everspin.com

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