STM32MP257 application processors (STM32 MPUs) are based on a dual Arm® Cortex®-A35 cores running at up to 1.5 GHz and Cortex®-M33 cores running at 400 MHz.

They feature 3 Ethernet ports, 3 FDCAN interfaces, H.264 encoding/decoding, a 3D GPU, AI/NN capabilities, LVDS/DSI display interfaces, and security features.

STM32MP257 offers a dedicated evaluation board, the STM32MP257F-EV1, to help you get started with your design.

This product offers advanced edge AI capabilities with its NPU accelerator and provides flexibility in running AI applications on either the CPU, GPU, or NPU. Additionally, this product is designed to support high-end edge computing use cases, such as machine vision, through its multimedia capabilities. All of this is possible thanks to the comprehensive ST edge AI ecosystem.


The STM32MP2 series offers general-purpose microprocessors (MPUs) suitable for a wide range of applications across multiple market segments, targeting industrial use.

EV chargers
Industrial and factory automation
Smart homes

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Enhanced security

  • Advanced security features with certifications supporting security functions for IoT and industrial applications (SESIP3 certification target, TrustZone® on Cortex®-A & Cortex®-M, secure isolation for edge confidential computing.)

Supporting ecosystem for faster development

  • Fast and easy application software porting thanks to the mainlined open-source Linux distribution based on Yocto: OpenSTLinux
  • Android distribution
  • STM32Cube toolset, including STM32CubeMX (pins and clocks configuration, DRAM interface tuning tool, code generation for Linux on Cortex®-A35 and STM32Cube firmware on Cortex®-M33), GCC-based IDEs and STM32CubeProgrammer with signing tools.

High integration

  • Optimized bill of materials (BOM) thanks to high integration, packages compatible with low-cost PCB technologies (down to 4-layers plated-through hole -PTH- PCBs) and a dedicated power management IC (PMIC)

An extensive third-party ecosystem

  • Buildroot and OpenWRT supports available via partners
  • System-on-modules based on STM32MP2 from partners

ST authorized partners: UI tool providers, secure software providers, training, and software services.