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.
Sayantan Nandy, an electronics engineer with over four years of hands-on experience in PCB design, circuit development and power electronics, is proficient in EAGLE CAD, Ki-Cad, and Altium. He has a proven track record of delivering efficient and effective systems. His expertise extends from R&D, and prototyping to production support, making him a valuable asset to any engineering team.
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