Reference Design Availability for STM32WLE5JC (Schematics, PCB, RF Layout, Stack-up)

[Vimukthi-Wathudura]

Hi all,

I am currently working on the design of a custom LoRa/LoRaWAN-based IoT node using the STM32WLE5JCI6TR (bare MCU, not a module), and I am looking for a complete and reliable hardware reference design to follow.

So far, I have identified the following:

• NUCLEO-WL55JC reference design files (schematics and PCB) from ST, which appear to be the closest official reference (even though it is based on WL55 dual-core variant)

• Wio-E5 Dev Board from Seeed Studio, which is based on a module and does not expose the RF design details

While these are helpful, I am specifically looking for:

1. A reference design based directly on STM32WLE5JC (or very close variant)

2. Complete design files including:

   • Full schematics

   • PCB layout files

   • RF matching network implementation

   • Antenna routing

   • PCB stack-up / layer information

Since RF design (matching, impedance control, grounding, etc.) is quite sensitive, having a proven reference is critical.

Additionally, I would like to know:

:backhand_index_pointing_right: Are there any open-source or freely available reference designs based on STM32WLE5JC that include full PCB and RF layout details?

Any guidance, shared designs, or recommendations would be greatly appreciated.

Thanks in advance!

[Imen.D]

Hello @Vimukthi-Wathudura and Welcome to the Community,

Please refer to the following resources:

STM32WL5x-Ex wireless MCU lines - Wireless MCUs System-on-Chip Long-range communications

Data brief - STDES-WL5xxxxx - Reference designs for STM32WL5x and STM32WLEx microcontrollers