MRAM memory design stores code and data in one chip, enabling boot, updates, and storage for AI, automotive, aerospace, industrial, and edge systems.
Everspin Technologies has introduced UNISYST, a new MRAM memory family that unifies code and data in a single device, offering high-speed, reliable storage for embedded and software-defined systems. The memory delivers fast boot times, rapid updates, and predictable operation, all while keeping data safe across power cycles.
UNISYST combines configuration memory and high-density persistent storage, extending MRAM into applications typically served by NOR flash. Customers can migrate from current serial MRAM devices to UNISYST without changing system architecture or software. Densities range from 128 megabits to 2 gigabits, with a standard xSPI interface supporting octal SPI at up to 200 MHz. The devices are designed to meet AEC-Q100 Grade 1 standards and maintain at least 10 years of data retention even under extreme temperatures, making them suitable for automotive, aerospace, industrial, and edge AI applications.
Performance highlights include read bandwidths up to 400 MB/s and write speeds around 90 MB/s—over 400× faster than typical NOR flash—with write endurance up to 10× higher. The code-and-data MRAM architecture allows in-place execution and frequent reconfiguration, reducing the need for multiple system memories.
UNISYST is aimed at applications that demand high bandwidth, endurance, and predictable behavior:
- Edge AI: Fast AI weight updates, local code-and-data storage, and rapid system boot.
- Military and aerospace: FPGA configuration and mission-critical code storage, including satellites.
- Automotive: Control, logging, and configuration memory compliant with high-temperature standards.
- Industrial and gaming: Fast logging and configuration in demanding environments.
“System designers are running into the physical and performance limits of NOR flash, especially as process nodes move below 40 nanometers and workloads become more demanding,” said Sanjeev Aggarwal, president and CEO of Everspin Technologies. “With UNISYST, we are extending our MRAM roadmap to higher densities while giving customers a practical way to start with PERSYST today and migrate to a code-and-data MRAM architecture as soon as it is available.”