STMicroelectronics and WITTENSTEIN high integrity systems Demonstrate Flexible Software Architectures for Software-Defined Vehicles

By combining STMicroelectronics' Stellar G3 automotive microcontrollers with SAFERTOS^®, pre-certified to ISO 26262, automotive developers can implement mixed-criticality applications, support emerging software-defined vehicle architectures, and reduce certification effort without compromising functional safety.

BRISTOL, England, Nov. 10, 2026 /PRNewswire/ -- WITTENSTEIN high integrity systems (WHIS) and STMicroelectronics have announced a joint demonstration at Electronica 2026 showcasing how automotive developers can implement mixed-criticality applications on the Stellar G3 platform using SAFERTOS^®.

Running on the Stellar G3 platform, the demonstration showcases the value of the SR6G3 for real-time embedded applications that combine control, visualisation and user interaction. Featuring SAFERTOS^®, WHIS' safety-critical Real Time Operating System, it demonstrates how developers can implement mixed-criticality applications, safety supervision and application partitioning within modern automotive architectures.

The demonstration highlights how applications with different safety requirements can be isolated and run on a powerful hardware platform while maintaining deterministic behaviour. This supports the transition to software-defined and zonal vehicle architectures, giving developers greater flexibility when selecting software architectures and combining technologies according to system requirements.

"The future of mobility is software-defined. Together with WITTENSTEIN high integrity systems, we're demonstrating how Stellar G MCUs and SAFERTOS^® enable simplified zonal architectures, independent ASIL-compliant safety supervision, and faster deployment of intelligent vehicle functions. This collaboration helps OEMs move from architectural complexity to zonal simplicity." - Davide Santo, Automotive Product Marketing Senior Director

As vehicle manufacturers transition towards SDVs, functionality that was previously distributed across dozens of electronic control units is being consolidated into zonal controllers and centralised compute platforms. While this can reduce hardware complexity and support faster software updates, it also introduces new pressures around balancing innovation, scalability and performance with stringent functional safety requirements.

"The automotive industry is undergoing a significant architectural transformation," said Andrew Longhurst, Managing Director of WITTENSTEIN high integrity systems. "As SDV architectures become more common, developers need the flexibility to choose the right software architecture for each function while maintaining confidence in functional safety. This demonstration shows how SAFERTOS^® and the Stellar G3 platform can help enable that flexibility."

Visitors to Electronica 2026 can view the demonstration at the STMicroelectronics stand (C3.100-102) from 10-13 November and discuss the evolving requirements of SDV development with representatives from both companies.

Building on a Safety-Certified Foundation

SAFERTOS^® is pre-certified to ISO 26262 for use in safety-critical applications and is supplied with supporting certification evidence through the Design Assurance Pack (DAP). By providing safety artefacts, documentation and integration guidance, SAFERTOS^® can help automotive developers reduce certification effort, simplify compliance activities and accelerate the deployment of safety-related applications.

Learn more about how SAFERTOS^® and the STMicroelectronics Stellar G3 platform are enabling safe and flexible software-defined vehicle development: https://www.highintegritysystems.com/stmicroelectronics/

About WITTENSTEIN high integrity systems

WITTENSTEIN high integrity systems (WHIS) helps organisations develop safety-critical embedded systems with confidence. Through SAFERTOS^®, software assurance solutions and certification support, WHIS provides the evidence, traceability and guidance needed to support functional safety, cybersecurity and compliance activities. With more than 20 years of experience across automotive, industrial automation, medical technology, aerospace and rail, WHIS helps engineering teams reduce certification effort, improve audit readiness and build confidence in the software foundations of safety-critical products.

For more information, please visit: https://www.highintegritysystems.com or find WHIS on LinkedIn.

About STMicroelectronics

STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. The Stellar family of automotive microcontrollers is designed to support next-generation vehicle architectures, including software-defined and zonal vehicle platforms.

SOURCE WITTENSTEIN high integrity systems