AT24MAC602-SSHM-T: A Secure Serial EEPROM with Integrated EUI-64™ Node Identity

In the rapidly evolving landscape of the Internet of Things (IoT) and connected devices, securing device identity and data integrity has become paramount. The AT24MAC602-SSHM-T from Microchip Technology addresses this critical need by combining a reliable serial EEPROM with a factory-programmed, globally unique EUI-64™ node identity, all within a single, secure package.

This integrated circuit is built around a 2-Kbit I²C-compatible serial EEPROM, organized as 256 x 8 bits. Its key differentiator is the inclusion of a pre-programmed 64-bit Extended Unique Identifier (EUI-64™) in a read-only section of the memory array. This immutable identifier provides a guaranteed unique node address essential for IEEE 802-based networking protocols, including Ethernet, Zigbee, and Thread, eliminating the need for complex and costly identity management during manufacturing.

Beyond its identity function, the device offers robust security and reliability features. The entire memory array is protected by advanced hardware security mechanisms, including a software write-protect pin (WP) and a memory protection scheme that allows sections of the EEPROM to be locked permanently or temporarily against inadvertent or malicious writes. This ensures the confidentiality of sensitive data, such as network credentials, calibration constants, or security keys, stored within the memory.

Housed in a space-saving 8-lead SOIC package, the AT24MAC602-SSHM-T is designed for operation across the industrial temperature range (-40°C to +85°C). Its low-power consumption makes it an ideal choice for battery-powered and energy-sensitive applications. By integrating a unique identity with non-volatile memory and hardware security, this component simplifies design-in, reduces bill-of-materials (BOM) count, and significantly enhances the overall security posture of end products.

ICGOODFIND: The AT24MAC602-SSHM-T is an optimal solution for designers seeking to embed a secure, unique identity and reliable data storage into their IoT nodes, industrial controllers, and networking equipment, streamlining production while bolstering device security.

Keywords: Secure EEPROM, EUI-64™, Device Identity, I²C Memory, Hardware Security.