MYiR Tech MYC-LD25X – A compact STM32MP25 system-on-module running Debian 12

MYiR Tech’s MYC-LD25X is a compact 39x37mm system-on-module built around the STMicro STM32MP25 dual-core Cortex-A35 SoC running at 1.5GHz with a Cortex-M33 core, and an NPU capable of 1.35 TOPS. The module comes with up to 2GB LPDDR4 RAM, 8GB eMMC storage, and a range of connectivity options, including Gigabit Ethernet, USB, CAN FD, UART, and SPI. Designed for industrial HMI, edge computing, energy systems, and automation, the MYC-LD25X is suitable for high-performance applications in these fields.

Previously, we covered other development boards from MYiR, including the MYD-J7A100T, MYD-YG2UL, MYD-YG2LX, and MYD-J1028X. We also wrote about other STM32MP25-based system-in-package and system-on-module namely the Digi ConnectCore MP25 and Octavo OSD32MP2. Feel free to check them out if you’re interested.

MYC-LD25X STM32MP25-based System-On-Module

MYC-LD25X specifications:

• SoC – STMicro STM32MP257D processor
  • CPU – Dual-core Arm Cortex-A35 64-bit RISC core operating at up to 1.5 GHz
  • MPU – 32-bit Arm Cortex-M33 RISC core clocked at 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 – 8GB eMMC flash and 256Kbit EEPROM
• 252 pads on LGA Package
  • Storage – 2x SD/MCC
  • Display – 1x MIPI DSI, 1x Parallel RGB, 2x LVDS
  • Camera – 1x MIPI CSI, 1x DCMI
  • Audio – 4x SAI
  • Ethernet – 3x RGMII
  • USB – 1x USB2.0, 1x USB 3.0
  • Other I/Os – Up to 128x GPIOs, 4x USART, 5x UART, 8x SPI, 7x I2C, 4x I3C, 3x CAN FD
  • Debugging – 1x JTAG, 1x SWD
• Power Management
  • Input – 5V/3A
  • STMicro STPMIC25APQR PMIC
• Dimension – 39mm x 37mm (12-layer PCB design)
• Temperature Range – -40 to 85 Celsius (industrial grade)

The MYC-LD25X supports Linux 6.1 and Debian 12, offering flexibility for different project needs. MYiR provides a complete software package, including kernel and driver source code along with compilation tools to streamline development from design to implementation.

MYD-LD25X development board

The MYD-LD25X development board uses the MYC-LD25X SOM as its core controller. It leverages the full capabilities of the STMicro STM32MP2 SoC and offers key features such as 3x debug serial ports (for Cortex-A35, Cortex-M33, and SWD), 3x Gigabit Ethernet interfaces, a WiFi/BT module, an LVDS display interface, and an HDMI display interface.

The MYD-LD25X development board specification:

• Supported SoM – MYC-LD25X CPU module described above
• Storage – 1x MicroSD card slot
• Display interfaces – 1x HDMI port, 1x LVDS FPC connector
• Camera – MIPI-CSI FPC connector
• Audio – 3.5mm audio jack for input and output
• Connectivity
  • 3x Gigabit Ethernet RJ45 ports
  • AP6256 WiFi/BT Module (complies with IEEE 802.11 a/b/g/n/ac standard and supports BluetoothV5.2)
  • 1x U.FL PCB antenna connector for WiFi/BT Module
• USB
  • 2x USB 2.0 OTG port
  • 1x USB 2.0 OTG port
  • USB Type-C port for power
• Serial ports – 3x Debug Serial Ports (1x Cortex-A35, 1x Cortex-M33 and one for SWD)
• Expansion – 40-pin (mostly) Raspberry Pi-compatible GPIO header with GPIO/I2C/UART/SPI/CAN, support for MY-WIREDCOM RPI module with RS485, RS232 and CAN Bus
• Misc
  • 1x Power on/off switch
  • Boot DIP switch
  • 3x buttons (1x Reset, 1x Power On/Off, 1x User)
  • LANKE LK8563T RTC with battery
• Power Supply – 5V/3A supply via Type-C port
• Dimension – 120 mm x 70 mm (6-layer PCB design)
• Temperature range: -40~85 Celsius (industrial grade), but for WiFi/BT Module: -30~85 Celsius

The MYD-LD25X Development Board comes with a Quick Start Guide and a USB to TTL cable. MYiR also offers additional modules such as the MY-LVDS070C 7-inch LCD, the MY-CAM003M Camera Module, and the MY-WIREDCOM RPI Module as optional add-ons. Both the MYC-LD25X and MYD-LD25X are available in 1GB and 2GB variants.

The MYC-LD25X is priced at $43.80 for the 1GB model and $49.80 for the 2GB model, while the MYD-LD25X is available at $75 for 1GB and $81 for 2 GB. Additional add-on modules and further details, including purchase links, can be found on the product page and in the press release.

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