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STMicroelectronics Stellar P3E Microcontrollers - Coming Soon

STMicroelectronics Stellar P3E Microcontrollers include the SR6P3EC4 and SR6P3EC6, a key addition to the Stellar P series. The Stellar P3E represents a unique category of MCU by bridging the gap between mission-critical safety and embedded AI. The device maintains seamless compatibility with the current Stellar portfolio while unlocking higher performance and smarter motor control.

The STMicroelectronics Stellar P3E Microcontrollers are designed to fulfill the requirements of domain controllers and ECUs with high integration, as needed in the architectures of connected, updatable, automated, and electrified cars. The MCUs deliver superior real-time and safe performance (with the highest ASIL-D capability).

The Stellar P3E Microcontrollers bring hardware-based virtualization technology and ease the development and integration of multiple-source software on the same hardware while maximizing the resulting software performance. The devices provide high-efficiency OTA reprogramming with fast new-image download and activation. Additionally, the MCUs provide high-speed cryptographic security services, for instance, for network authentication.

Features

  • AEC-Q100 qualified
  • SR6 integration MCUs:
    • Have superior real-time and safe performance (with the highest ASIL-D capability)
    • Bring hardware-based virtualization technology to MCUs for simplified multiple software integrations at optimized performance
    • Have built-in no-downtime OTA reprogramming capability (with built-in dual-image mechanism)
    • Offer high-speed security cryptographic services, for example, for network authentication

Applications

  • X-in-1 powertrain ECU integration
  • Dual-motor drivetrains
  • High-resolution motor control

Specifications

  • Cores and accelerators
    • 4x 32-bit Cortex®-R52+ cores (Two in split-lock configuration):
      • Configurable as either four cores (Two of them in lockstep configuration) or 3 cores (all of them in lockstep configuration)
      • Arm® v-R compliant
      • Single precision floating-point unit (FPU)
      • Privilege level for real-time virtualization
      • Up to 500MHz
    • One Cortex-M4 multipurpose accelerator running at up to 200MHz, in lockstep configuration
    • Four eDMA engines
  • Neural processing unit
    • Neural ART Accelerator™ 11
    • Energy-efficient NPU capable of accelerating a wide range of neural network models
  • Memories
    • xMemory: up to 19.5MB extensible on-chip nonvolatile memory (NVM) depending on ordered part number:
      • PCM (phase-change memory) as nonvolatile memory
      • Up to 19MB code NVM, with A/B swap OTA mechanism (up to 2x 9.5MB)
      • 512KB HSM-dedicated code NVM
    • 384KB data NVM (256KB + 128KB dedicated to HSM)
    • Up to 1792KB on-chip general-purpose SRAM
  • Security: 2nd-generation hardware security module
    • Cybersecurity: ISO/SAE 21434 compliance (refer to the cybersecurity reference manual for details)
    • On-chip high-performance security module with full support for e-safety vehicle intrusion-protected applications (EVITA)
    • Symmetric and asymmetric cryptography processor
    • High-performance lock-stepped AES-light security subsystem for fast ASIL-D cryptographic services
  • Safety: comprehensive new-generation ASIL-D safety concept
    • State-of-the-art safety measures at all levels of the architecture for more efficient than implementation of ISO 26262 ASIL-D functionalities
    • Complete hardware virtualization architecture built on Cortex-R52+ privilege mode (best-in-class software isolation, real-time support for multiple virtual machines/applications)
  • Device standby/low-power modes
    • Versatile low-power modes
    • Ultra-low power: standby mode for the lowest quiescent current with optimized active subsystem (for example, standby RAM) and wake-up capability
    • Smart low-power: smart power mode with Cortex®-M4 subsystem, extended communications interfaces, and ADC peripheral
  • Peripheral, I/O, and communication interfaces
    • Eight LINFlexD modules
    • One dual-channel FlexRay controller
    • 10 queued serial peripheral interface (SPIQ) modules
    • Two microsecond channels (MSC)
    • Two I2C interfaces
    • Two SENT modules (10 channels each)
    • Two PSI5 modules (one channel each)
    • Enhanced analog-to-digital converter system with:
      • 12 separate 12-bit SAR analog converters (including one supervisor/safety ADC)
      • Four separate 9-bit SAR analog converters (2 channels each) with fast comparator mode
      • x9-bit SAR analog converter for device standby/low-power mode
      • 10 separate 16-bit sigma-delta analog converters with embedded DSP processor on each SDADC Enhanced interconnection with GTM timer for autonomous ADC/GTM subsystem operation
    • Advanced timed I/O capability:
      • Generic timer module (GTM41 34)
      • High-resolution timer
    • Communication interfaces:
      • One 10/100/1000 Mbit/s Ethernet controller compliant with IEEE 802.3-2008: IPv4 and IPV6 checksum modules, AVB, VLAN, and supporting 10BASE-T1S with OPEN Alliance 3-pin (OA3p) interface
      • Eight modular controller area network (MCAN) modules, supporting CAN Classic and CAN FD®
      • Two XS_CAN modules supporting CAN classic, CAN FD, and CAN XL®

Videos

Associated Stellar P MCUs

STMicroelectronics SR6Px Stellar P Motion Control Microcontrollers

Stellar-integrated MCUs designed to meet the requirements of domain controllers and ECUs.

Learn Moreabout STMicroelectronics SR6Px Stellar P Motion Control Microcontrollers

Block Diagram

Block Diagram - STMicroelectronics Stellar P3E Microcontrollers
Published: 2026-02-13 | Updated: 2026-02-16