STMicroelectronics STM32MP157C-DK2

Overview

STM32MP157C-DK2 from STMicroelectronics is a dual-core Arm Cortex-A7 + Cortex-M4 Linux-capable Discovery kit featuring 4-Gbit DDR3L, 1-Gbps Ethernet (RGMII), Wi-Fi 802.11b/g/n, Bluetooth Low Energy 4.1, and a 4" MIPI DSI capacitive touch LCD - designed for rapid prototyping of industrial HMI and edge gateway applications.

For engineers reviewing the STM32MP157C-DK2 datasheet, STM32MP157C-DK2 pinout, STM32MP157C-DK2 application, or STM32MP157C-DK2 equivalent, this board serves as a validated hardware platform for OpenSTLinux distribution bring-up, STM32CubeMP1 co-processor development, and secure boot evaluation with cryptographic acceleration.

Technical Context

The STM32MP157C-DK2 implements a heterogeneous dual-processor architecture: the Cortex-A7 cores run mainline Linux via OpenSTLinux, while the Cortex-M4 executes real-time tasks using STM32CubeMP1 firmware; STPMIC1 provides full power sequencing and PMIC control for the MPU and peripherals.

It integrates RGMII PHY for IEEE-802.3ab-compliant 1-Gbps Ethernet, MIPI DSI SM interface driving a 480×800 LCD, and Murata LBEE5KL1DX-883 module enabling concurrent Wi-Fi and BLE 4.1 operation - all supported by preloaded demonstration software on microSD.

Key Specifications

Availability

STM32MP157C-DK2 is available at Aetrix Electronics and suitable for industrial HMI development, edge gateway validation, and secure Linux-based IoT device prototyping requiring stable component supply and long-term toolchain support.

Supply support for STM32MP157C-DK2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, MPUs, analog ICs, MEMS, and power solutions for industrial, automotive, and consumer markets.

The STM32MP1 series targets Linux-capable embedded applications requiring real-time responsiveness, security, and rich peripheral integration - bridging the gap between microcontrollers and application processors.

FAQ

What operating systems are officially supported on the STM32MP157C-DK2?

The board ships with STM32 MPU OpenSTLinux Distribution (e.g., STM32MP1Starter), based on Yocto Project and mainline Linux kernel. It supports full graphical UI via Wayland/Weston, real-time extensions, and secure boot. ST also provides STM32CubeMP1 firmware for the Cortex-M4 core, enabling hybrid Linux+RTOS execution.

Does the STM32MP157C-DK2 include hardware cryptographic acceleration?

Yes - the STM32MP157CAC3 MPU features TrustZone-enabled Secure Boot, AES-128/256, SHA-256, and PKA (Public Key Accelerator) hardware blocks. These are accessible via OP-TEE and Linux Crypto API, enabling secure firmware updates and TLS offload in edge gateway deployments.

Can the STM32MP157C-DK2 be used for production-ready designs?

No - it is an evaluation and development kit only. While the STM32MP157CAC3 MPU itself is qualified for industrial use, the DK2 board lacks production-grade mechanical, thermal, and EMI design. ST recommends migrating to custom carrier boards or ST's STM32MP157C-EV1 evaluation board for design-in.

How is Wi-Fi and Bluetooth connectivity implemented on this board?

Wi-Fi 802.11b/g/n and Bluetooth Low Energy 4.1 are provided by the Murata LBEE5KL1DX-883 module, integrated directly on the PCB with dedicated RF layout, matching network, and onboard antenna. Drivers are included in OpenSTLinux and exposed via standard Linux interfaces (wpa_supplicant, BlueZ).