Automotive microcontrollers for
next-generation vehicles

ST is committed to supporting
car makers' transformation journey
with innovative solutions

ST is leading the way in creating safer, greener, and more interconnected vehicles. In this evolving mobility landscape, ST enables automakers to integrate advanced technology into transportation, enhancing the driving experience. Hybrid and electric vehicles are becoming the norm, focusing on affordability, energy efficiency, and simplified design through advanced zonal architectures. Ethernet communication and seamless over-the-air (OTA) updates are key to continuously improving vehicle capabilities.

As vehicles become more software-driven, adding new features and enhancements is crucial. Our innovative phase-change memory technology supports this shift, allowing automakers to continuously improve and adapt vehicles for the future.

How ST is helping car makers accelerate this transformation

At the forefront of automotive innovation, ST is driving advancements in multiple key areas with a comprehensive range of automotive microcontrollers. These microcontrollers are designed to optimize vehicle performance, reduce complexity, and ensure efficient power management across all systems. We are leading the transition from distributed to zonal electrical/electronic architectures, simplifying the design and maintenance of next-generation vehicles. This cross-functional integration spans multiple application domains.

Our solutions enable seamless communication for software-defined vehicles, allowing for continuous improvement and robust security through over-the-air (OTA) updates with zero downtime. On-demand feature enablement offers flexible and customizable vehicle services and functions that can be activated as needed. 

Beyond Advanced Driver Assistance Systems (ADAS), ST enhances the in-car experience with advanced infotainment and connectivity solutions, improving both safety and driving comfort. Through this comprehensive approach, ST ensures that automakers are equipped with the latest technologies to create the vehicles of tomorrow. Click here to discover ST's insights on next-gen automotive architectures.

Stellar 32-bit Arm®-based automotive MCUs

The first pillar

  • A scalable and secure hardware architecture based on the Arm instruction set, supporting real-time virtualization of mixed-ASIL ECUs
  • Featuring a rich set of IOs and peripherals
  • A unique NVM built on 28nm FD-SOI technology that increases software space as required
  • ST's proprietary phase-change memory (PCM) technology features the industry’s smallest memory cell for automotive MCUs
  • Optimized for electrification, including x-in-1 vehicle motion control, new vehicle architectures with varying levels of function integration, and safety MCUs for critical subsystems.
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STM32A 32-bit Arm®-based automotive MCUs

The second pillar

  • This brand-new STM32A series offers a low-cost, added-value solution for automotive actuation applications
  • Scalable, cost-effective solution based on ST’s eNVM technology
  • Tailored for actuation systems at the very edge of the car network including car body and convenience applications as well as on-board charging (OBC)
  • Support for the ASIL B automotive safety level
  • Automotive designers benefit from the well-known and easy-to-use comprehensive STM32 development ecosystem
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Both our microcontroller families are augmented by a growing set of ecosystem partners
who enhance solution value

Software developers, en route!

Sunwoda

Wang Mingwang, Founder, Sunwoda


"As global leader in lithium-ion batteries, Sunwoda provides stable and reliable electronic system solutions for automotive suppliers worldwide. Our new collaboration with STMicroelectronics focuses on developing solutions using ST’s advanced Stellar microcontrollers and proprietary production processes, which primary include battery management systems, and VDC/Zonal and body control functions".

"Together, we aim to provide intelligent solutions that enhance the next generation of energy vehicles in China and globally".

Arm software ecosystem

Dipti Vachani, SVP and GM, Automotive Line of Business, Arm


"As the driver experience continues to evolve in the age of AI and software-defined vehicles, advancing automotive functional safety, flexibility and real-time performance capabilities is essential".

"Built on Arm, the Stellar microcontroller family taps into the Arm compute platform's advanced safety and real-time features, as well as the broad Arm software ecosystem. This enables car manufacturers to comply with strict safety regulations while implementing innovative features that keep them at the forefront of the automotive industry".

STMicroelectronics and Green Hills software

Dan O’Dowd, Founder and CEO at Green Hills Software


"STMicroelectronics and Green Hills Software are working closely together to deliver innovative integrated hardware and software solutions that address the growing challenges automotive OEM’s and T1’s face in next generation vehicle zonal architectures".

"Green Hills production-proven safety-certified RTOS and tools, coupled with ST’s Stellar SR6’s unique communication IP, deliver advanced fault tolerant zonal networking that enables significant per-vehicle cost savings while reducing time-to-market".

ST is empowering the automotive industry to innovate for the future

Asif Anwar, Executive Director, TechInsights


"The path to the software-defined vehicle will be underpinned by the electrification of the powertrain, leading to enhanced digitalization, vehicle connectivity and driving automation capabilities. This is enabled through zonal and centralized controllers providing the necessary compute capabilities".

"STMicroelectronics, a leading supplier of automotive MCUs, leverages its Stellar family to meet SDV requirements and the growing trend of X-in-1 integration, offering OEMs a path to reimagine vehicle architecture with solutions that merge multiple functions seamlessly. With scalable, secure, and high-performance MCUs, optimized for power efficiency and developed in-house, ST is empowering the automotive industry to innovate for the future".

Not just a vision, a path already paved

ST has launched leading-edge automotive Integration MCUs, as Stellar P and Stellar G series, which have already reached the qualification stage with volume production starting now. Specifically engineered to meet the stringent demands of new vehicle architectures, these automotive microcontrollers are gaining momentum. This reflects ST's dedication to innovation and value creation.
Additionally, it positions the Stellar integration MCUs series as a cornerstone in the future of automotive technology.

Automotive MCUs
for next-gen cars

Technology explained