Everspin Technologies Introduces UNISYST MRAM, a New Generation of Unified Memory for Embedded Systems
Everspin Technologies, a global leader in magnetoresistive random access memory (MRAM) technology, has announced the launch of its UNISYST MRAM family, a next-generation unified memory architecture designed to transform the way embedded systems store, manage, and access code and data. The new platform aims to address the growing performance and reliability challenges faced by traditional non-volatile memory technologies in modern embedded applications.
The announcement marks an important milestone in the evolution of persistent memory technologies. For decades, embedded systems have relied heavily on NOR flash memory for code storage and firmware management. While NOR flash has served as a reliable technology, its limitations are becoming increasingly apparent as computing demands continue to rise and semiconductor manufacturing processes scale to smaller nodes.
The UNISYST MRAM architecture seeks to overcome these challenges by providing a unified memory platform capable of handling both code storage and data operations with high performance, endurance, and reliability.
Addressing the Limitations of Traditional Flash Memory
According to company leadership, system designers are encountering fundamental limitations when using conventional flash memory in modern embedded environments.
“System designers are running into the physical and performance limits of NOR flash, especially as semiconductor process nodes move below 40 nanometers and workloads become increasingly demanding,” explained Sanjeev Aggarwal, President and Chief Executive Officer of Everspin Technologies.
He noted that the introduction of UNISYST represents a major expansion of the company’s MRAM roadmap. By offering higher-density persistent memory solutions and a unified architecture for both code and data storage, Everspin aims to provide developers with a practical alternative to flash-based systems.
The new technology also offers a smooth transition path for organizations currently using the company’s existing MRAM platforms. Developers can begin using Everspin’s PERSYST MRAM solutions today and later migrate to the more advanced unified code-and-data architecture enabled by UNISYST.
Unified Code-and-Data Architecture
One of the defining characteristics of the UNISYST platform is its unified memory architecture, which combines the functions traditionally handled by separate code storage and data memory devices.
In conventional embedded system designs, firmware and application code are typically stored in flash memory, while dynamic data is handled by volatile memory such as SRAM or DRAM. This separation introduces complexity in system design, as well as limitations in performance and flexibility.
The UNISYST architecture eliminates these constraints by enabling a single non-volatile memory platform to store and access both code and data efficiently. This unified approach simplifies system architecture while improving performance and reliability.
By extending MRAM technology into applications traditionally dominated by NOR flash, Everspin is positioning UNISYST as a next-generation memory solution capable of supporting modern embedded workloads.
Seamless Migration from Existing MRAM Platforms
The UNISYST family builds directly on the company’s PERSYST MRAM platform, which has already been widely adopted in applications requiring high endurance and reliable persistent memory.
One of the key advantages of this strategy is that developers can migrate to the new architecture without significant modifications to their existing system designs. Because UNISYST maintains compatibility with common industry interfaces and software frameworks, companies can adopt the new technology without redesigning their entire hardware or software stack.
This approach significantly reduces development costs and accelerates time-to-market for new products.
High-Density Memory for Demanding Applications
The initial release of the UNISYST family will include memory devices ranging from 128 megabits to 2 gigabits in capacity. These densities allow the technology to support a wide range of applications requiring large amounts of non-volatile storage.
To ensure compatibility with modern embedded platforms, the devices will utilize a standard xSPI interface capable of operating at speeds of up to 200 MHz in octal SPI mode. This interface enables high-speed communication between the memory device and host processors, ensuring rapid access to stored data.
In addition, the devices are designed to meet AEC-Q100 Grade 1 automotive qualification standards, making them suitable for use in automotive systems operating in harsh environmental conditions. The memory devices are also expected to provide at least 10 years of data retention, even at extreme temperatures.
These features make the technology particularly well-suited for demanding environments such as automotive electronics, aerospace systems, industrial equipment, and emerging edge computing platforms.
Enabling the Next Generation of Edge AI
The rapid growth of edge artificial intelligence (AI) is placing new demands on embedded memory technologies. As AI workloads move closer to sensors and edge devices, memory solutions must support larger data sets, faster updates, and more reliable operation.
Traditional flash memory often struggles to meet these requirements due to relatively slow write speeds and limited endurance.
Kwabena W. Agyeman, President and Co-founder of OpenMV, highlighted the significance of the new technology for AI development.
“As generative AI models transition from cloud-based systems to embedded devices, developers must manage model assets that can reach tens or even hundreds of megabytes in size,” he explained.
Storing these models is only part of the challenge. Developers must also update them frequently during testing, development, and deployment.
High-speed MRAM technologies such as UNISYST enable rapid rewriting of stored data without the bottlenecks associated with traditional flash memory. This capability makes it possible to iterate AI models quickly and deploy updates more efficiently.
High Performance and Exceptional Endurance
One of the most important advantages of MRAM technology is its ability to deliver both high performance and exceptional endurance.
The UNISYST MRAM family offers read bandwidth of up to 400 MB per second and write bandwidth of approximately 90 MB per second. These speeds represent a dramatic improvement compared with traditional NOR flash memory, which can be hundreds of times slower when performing write operations.
In fact, the write performance of UNISYST is estimated to be more than 400 times faster than conventional NOR flash.
Another major advantage is endurance. MRAM technology can withstand significantly more write cycles than flash memory, making it ideal for applications requiring frequent updates or continuous data logging.
UNISYST devices offer write endurance up to ten times higher than typical NOR flash solutions, ensuring long-term reliability in demanding environments.
Designed for Software-Defined Systems
Modern electronic systems are increasingly becoming software-defined, meaning that functionality can be updated or modified through software rather than hardware changes.
These systems require memory solutions capable of supporting frequent updates, rapid boot times, and predictable performance.
UNISYST MRAM addresses these needs by combining high-speed access with persistent storage. Because the memory retains data even when power is removed, systems can reboot quickly without requiring lengthy reloading processes.
This capability is particularly valuable in applications where downtime must be minimized, such as industrial automation, automotive systems, and mission-critical computing environments.
Proven Reliability Built on Two Decades of MRAM Experience
MRAM technology developed by Everspin Technologies has been used in mission-critical applications for nearly twenty years. These deployments include enterprise storage systems and other environments where reliability and endurance are essential.
The UNISYST platform builds upon this established foundation by introducing new capabilities designed to support more advanced and software-intensive systems.
Key features of the UNISYST MRAM family include:
- Unified code-and-data memory architecture
- Standard xSPI interface with support for octal SPI operation up to 200 MHz
- Read speeds reaching 400 MB/s and high-speed write capability
- Endurance levels significantly higher than flash memory
- Automotive-grade reliability with AEC-Q100 Grade 1 certification
- Minimum 10-year data retention under extreme operating conditions
Together, these features position UNISYST as a high-performance alternative to existing non-volatile memory technologies.
Wide Range of Application Opportunities
The versatility of UNISYST MRAM enables it to support a broad spectrum of applications across multiple industries.
In edge AI systems, the technology allows developers to store large neural network models locally while enabling rapid updates and real-time processing close to sensors.
In military and aerospace applications, the memory can be used for configuration storage in field-programmable gate arrays (FPGAs) and other mission-critical systems. These systems often require frequent over-the-air updates, particularly in environments such as low-Earth orbit satellite platforms.
In the automotive sector, UNISYST provides reliable memory for control systems, configuration storage, and data logging, all while meeting strict temperature and reliability requirements.
Industrial systems also benefit from the technology’s durability. Applications such as factory automation, data logging, and casino gaming systems require memory capable of handling continuous writes while maintaining data integrity over long periods.
Expanding the Role of MRAM in the Global Memory Market
The launch of the UNISYST family represents more than just the introduction of a new product line. It signals a strategic expansion of Everspin’s position within the global memory industry.
Historically, MRAM technologies have been used in specialized niches requiring high endurance and reliability. With UNISYST, Everspin aims to expand MRAM adoption into mainstream embedded systems markets traditionally dominated by flash memory.
By providing a unified memory platform that combines high performance, durability, and simplified system architecture, the company hopes to address the growing needs of modern embedded electronics.
As software-defined systems continue to evolve and data-intensive applications move closer to the edge, memory technologies capable of supporting these demands will become increasingly important.
Through the introduction of UNISYST MRAM, Everspin Technologies is positioning itself to play a key role in shaping the future of embedded memory solutions.
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