Everspin debuts MRAM chips for harsh environments & high reliability
Everspin has launched two new additions to its PERSYST MRAM range, the EM064LX HR and EM128LX HR, engineered for use in environments requiring high levels of data integrity. The company is targeting aerospace, defence, automotive and industrial sectors with these new products, which are designed to maintain data integrity even at high temperatures and over long time periods.
Product features
The new devices are AEC-Q100 Grade 1 qualified for performance from -40°C up to +125°C. They promise 10-year data retention at 125°C and unlimited read/write endurance during this period. Each unit undergoes a 48-hour burn-in process before leaving the factory, intended to provide an added reliability margin for end users.
The EM064LX HR and EM128LX HR provide 64-megabit and 128-megabit densities, respectively, supporting data bandwidths up to 90 Mbytes per second for both read and write activities. Both products use industry-standard Quad Serial Peripheral Interface (QSPI) technology, with operation rates of 133 MHz in single transfer and 90 MHz in dual transfer modes.
Reliability validation
Everspin's EM064LX device has completed independent radiation testing at the Berkeley Accelerator Space Effects (BASE) Facility at Lawrence Berkeley National Labouratory as part of a NASA Jet Propulsion Labouratory programme. Test results indicated no single-event latch-up (SEL) events were detected up to an LET of 61 MeV-cm²/mg at ambient temperature. The architecture and reliability specifications are consistent across both new MRAM products.
Target markets
The company is positioning the new memory parts for mission-critical use cases, including those in aerospace and defence where continuous operation in harsh environments is required. The data retention characteristics at elevated temperatures also make the MRAMs suitable for automotive electronics and industrial control systems, where powered-down data loss can compromise safety or operational continuity.
Application implications
By providing 10-year retention at high temperature, the devices eliminate concerns around data loss in long-lived equipment exposed to thermal cycling and extreme ambient conditions. The QSPI interface and industrial packaging are designed to provide flexibility for engineers integrating the memory into their own platforms. Everspin states that the endurance and bandwidth performance are intended to meet requirements for higher density persistent memory within these sectors.
Other technical details highlighted by Everspin include the use of proven MRAM technology with support for unlimited endurance over the device lifetime. Each device is manufactured with a focus on data reliability for environments where system failure is not tolerated.
"Our customers design systems that must perform without compromise in the harshest environments. EM064LX and EM128LX family of products offer the most reliable and durable non-volatile memory where density and total bandwidth are key requirements. These solutions demonstrate Everspin's ongoing commitment to supporting mission-critical designs that rely on memory performance and reliability under extreme conditions," said Sanjeev Aggarwal, President and CEO, Everspin Technologies.
