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The usage of complex Microcontroller Units (MCUs) in avionics systems constitutes a challenge in assuring their safety. They are not always developed according to the assurance requirements accepted by the aerospace industry. These Commercial off-the-shelf (COTS) hardware components usually target other domains like the telecommunication branch, because of the volume of sales and reduced liability. In the last years MCUs developed in compliance to the ISO 26262 have been released on the market for safety-related automotive applications. The avionics market could profit taking credit for some of the activities conducted in developing these MCUs. In this paper we present evaluation results based on comparing assurance activities from ISO 26262 that could be considered for compliance to relevant assurance guidance for COTS MCU in avionics.

Assurance Benefits of ISO 26262 Compliant Microcontrollers for Safety-Critical Avionics