The Stellar P3E automotive MCU from ST features built-in AI acceleration, enabling real-time AI applications at the edge. Designed for the next generation of software-defined vehicles, it simplifies multifunction integration, supporting X-in-1 electronic control units from hybrid/EV systems to body zonal architectures.

According to ST, the Stellar P3E is the first automotive MCU with an embedded neural network accelerator. Its Neural-ART accelerator, a dedicated neural processing unit (NPU) with an advanced data-flow architecture, offloads AI workloads from the main cores, speeding up inference execution and delivering real-time, AI-based virtual sensing.

The MCU incorporates 500-MHz Arm Cortex-R52+ cores, delivering a CoreMark score exceeding 8000 points. Its split-lock feature lets designers balance functional safety with peak performance, while smart low-power modes go beyond conventional standby. The device also includes extensible xMemory, with up to twice the density of standard embedded flash, plus rich I/O interfaces optimized for advanced motor control.

Stellar P3E production is scheduled to begin in the fourth quarter of 2026.

Stellar P3E product page 

STMicroelectronics

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