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 System-on-Module with STM32MP25 processor
MYC-LD25X SOM Top view and Bottom view

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)
MYC-LD25X function block diagram
MYC-LD25X function block diagram

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

MYD-LD25X development board with STM32MP2-based System-on-Module

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.

MYD-LD25X development board top and bottom
MYD-LD25X dev board top and bottom points

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
MYD-LD25X function block diagram
MYD-LD25X function block diagram

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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12 Comments
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John
John
9 days ago

Is it easy to be soldered by reflow soldering ?
Can Chinese PCBA do this task?

licy
licy
8 days ago

In China, this can be done, MYiR can do it with its own factory

Radoslaw
9 days ago

Is the software (debian 12) preinstalled on emmc? Does anybody know?

licy
licy
8 days ago

It comes preinstalled with Linux OS, non-Debian or ubuntu distributions

jack
jack
8 days ago

What is a arm risc ?

licy
licy
8 days ago

Arm Cortex-A55 and Cortex-M33, not risc

licy
licy
8 days ago

sorry, It is arm risc

Michael Lenczewski
6 days ago

Not REEEEEAAALY.

Jean-Luc Aufranc (CNXSoft)
Admin

x86 is a CISC architecture, Arm is a RISC architecture. It’s not mentioned in specs often though…

Michael Lenczewski
6 days ago

ARM is not really RISC anymore, there’s a world of complexity underneath the hood of the application cortex A processor.

Jordon Wu
Jordon Wu
6 days ago

Still not available yet?

Jean-Luc Aufranc (CNXSoft)
Admin

You can purchase the module and devkit online if you have a PayPal account or a credit card. Sayantan provided the link and pricing information.

Khadas VIM4 SBC