MYD-LD25X Development Board: STMicroelectronics STM32MP257D with Dual Cortex-A35, Cortex-M33, and Integrated NPU for Industrial Applications

The MYD-LD25X Development Board is an evaluation platform designed around the STMicroelectronics STM32MP257D processor, featuring dual ARM Cortex-A35 cores (up to 1.5GHz) and a Cortex-M33 core (400MHz). It supports Linux 6.1 and Debian 12 and operates within an industrial temperature range of -40 to +85°C.

Built on the MYC-LD25X System-On-Module (SOM), the board leverages the 252-pin LGA expansion interface to access the full capabilities of the STM32MP257D processor. It is powered by a 5V/3A USB supply and includes 2x USB 2.0 Host ports, 1x USB 2.0 OTG, 3x Gigabit Ethernet interfaces, and a MicroSD card slot, along with an integrated WiFi/Bluetooth module. The board also features LVDS and HDMI display outputs, a MIPI-CSI camera interface, and an audio interface. Additionally, a 2x 20-pin Raspberry Pi extension interface provides access to GPIO, I2C, UART, SPI, and CAN, enabling further customization and expansion.

Previously, we covered several MYiR development boards, including the MYD-LMA35,  MYC-LMX9X, and MYC-J7A100T, among others. We also reviewed the STM32MP25 SoC module, such as the Digi ConnectCore MP25, which is suitable for various IoT applications, ranging from industrial automation to smart energy solutions, where performance, connectivity, and compact size are crucial. Feel free to check out these reviews for more options in this category.

MYC-LD25X and MYD-LD25X Specifications:

• SoC: STMicro STM32MP257D processor
  • CPU: Dual-core Arm Cortex-A35, 64-bit RISC, up to 1.5 GHz
  • MPU: 32-bit Arm Cortex-M33, up to 400 MHz
  • GPU: Unnamed 3D GPU
  • AI Accelerator: 1.35 TOPS NPU (Neural Processing Unit)
  • VPU: H.264 hardware video decoder and encoder
• System Memory: Up to 2GB LPDDR4 RAM
• Storage
  • MYC-LD25X: 8GB eMMC flash, 256Kbit EEPROM
  • MYD-LD25X: 1x MicroSD card slot
• Expansion Interface: 252 pads on LGA package
• Display Interfaces
  • MYC-LD25X: 1x MIPI DSI, 1x Parallel RGB, 2x LVDS
  • MYD-LD25X: 1x HDMI port, 1x LVDS FPC connector
• Camera Interfaces
  • MYC-LD25X: 1x MIPI CSI, 1x DCMI
  • MYD-LD25X: MIPI-CSI FPC connector
• Audio
  • MYC-LD25X: 4x SAI
  • MYD-LD25X: 3.5mm audio jack for input/output
• Ethernet: 3x RGMII
• USB Ports
  • MYC-LD25X: 1x USB 2.0, 1x USB 3.0
  • MYD-LD25X: 2x USB 2.0 OTG, 1x USB Type-C port for power
• Other I/Os
  • Up to 128x GPIOs
  • 4x USART
  • 5x UART
  • 8x SPI
  • 7x I2C
  • 4x I3C
  • 3x CAN FD
• Debugging Interfaces: 1x JTAG, 1x SWD
• Power Management
  • Input: 5V/3A
  • PMIC: STMicro STPMIC25APQR
• Dimensions
  • MYC-LD25X: 39mm x 37mm (12-layer PCB design)
  • MYD-LD25X: 120mm x 70mm (6-layer PCB design)
• Temperature Range
  • MYC-LD25X: -40 to 85°C (industrial grade)
  • MYD-LD25X: -40 to 85°C (industrial grade); WiFi/BT Module: -30 to 85°C

The MYD-LD25X Development Board supports both Linux 6.1 and Debian 12 operating systems, ensuring stable and efficient performance. MYIR offers a wealth of software resources, including kernel and driver source code, along with detailed documentation and development tools. These resources empower developers to streamline their projects and focus on creating innovative applications. The board is suitable for a diverse range of applications, including high-end industrial HMIs, edge computing gateways, energy charging stations, energy storage EMS systems, industrial automation PLCs, motion controllers, and more.

The MYD-LD25X Development Board includes a Quick Start Guide and a USB to TTL cable. MYIR also offers additional options for the board, such as the MY-LVDS070C 7-inch LCD Module, the MY-CAM003M Camera Module, and the MY-WIREDCOM RPI Module. The MYD-LD25X Development Board is available in two variants: 1GB for $75 and 2GB for $81. For more information on additional add-on modules and purchase links, please refer to the product page and the press release.

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