Secure NOR Flash Memory for Intelligent Edge Applications

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Micron’s MT25Q NOR flash enabled with Authenta technology provides secure authentication at the boot level and follows cryptographic command control

With increasing number of connected things or smart devices, threat of cyber attacks is also growing, especially to the always-on IoT devices. To address this need, Micron Technology has introduced new MT25Q NOR flash enabled with Authenta technology. The new flash memory authenticates content and command to secure device functionality at the silicon level.

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NOR Flash Memory

The secure device functionality in the flash memory creates a defense shield and adds reliability to IoT devices, and this increases the security of the unsecured intelligent devices. High firmware integrity down to the lowest level of boot is important today for connected devices used in a range of industries such as automotive, enterprise, industrial control and connected home.

Authenta Technology

Authenta Tehcnology used in flash memory allows secure over-the-air updates, edge silicon services, and cloud services. Moreover, this technology allows the connected devices to be authenticated directly with a host or secure gateway, whether in the cloud, at the edge or on the device. Authenta NOR flash can easily replace the standard serial NOR flash used pervasively in the industry, enabling a unified approach to managing device health, functionality and updatability.

Micron MT25Q NOR flash combines these security features in a NOR flash solution that meets stringent quality requirements for automotive memory components in advanced driver-assistance systems (ADAS).

Key Features of Micron MT25Q Authenta NOR Flash 

• SHA256 measurement accelerator with flexible user-defined settings

• Secure boot authentication

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• Trusted Computing Group’s (TCG) Device Identifier Composition Engine (DICE) architecture

• Attestable measurement values and automatic comparison with known good measurement

• Cryptographic command control

• Industrial and full automotive AEC-Q100 Grade 1 (-40°C to +125°C)

• x1, x2, and x4 multi-I/O serial peripheral interface (SPI) operation at clock frequencies up to 166 MHz

• Industry-standard 5x6mm WDFN package in both 1.8V and 3V options

“As manufacturers and enterprises increasingly accelerate the movement of intelligence to the edge of networks, cybersecurity concerns loom large, threatening profits and reputations,” said Kris Baxter, marketing vice president of Micron’s Embedded Business Unit.

Baxter continued, “With trust features embedded directly into the memory component, Authenta NOR flash provides a strong cryptographic fingerprint to authenticate devices, lock down code and further secure critical data — all while reducing costs and quickening time to market.”

Dan Isaacs, director of automotive strategy and customer marketing at Xilinx, explained that the MT25Q family of NOR memory is used to configure Xilinx Zynq SOC and FPGA-based solutions and can hold critical operational code and data.

He asserted, “Customers can now incorporate increased levels of security and device integrity in their systems, including enabling cloud-based services for secure over-the-air silicon functional updates. The combination of Xilinx adaptable technology with over-the-air silicon functional update capability and Micron’s Authenta technology provides a tremendous advantage to allow the secure use of flash memory critical to engine control units in cars today.”

The MT25Q Authenta NOR flash is sampling now, delivering system-level enhanced cybersecurity for a broad range of connected devices.

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