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Questions on Using STM32WB05KNV6TR as a Standalone MCU and Development Boards

bglglrr
Associate

‎2025-09-04 5:29 PM

Hello,
I am planning to develop a small low-power wearable device using the STM32WB05KNV6TR.
My goal is to use the STM32WB05KNV6TR as a standalone MCU while implementing BLE communication.

From what I have found, this IC seems to be often used only for BLE communication, so I would like to clarify a few points:

  1. Can the STM32WB05KNV6TR be used as an MCU that runs logic using peripherals such as ADC and SPI, while also handling BLE communication at the same time?

  2. If it is possible, which development board would be suitable for testing the STM32WB05KNV6TR before hardware development?

  3. I purchased the NUCLEO-WB05KZ board, but it seems to be in a module form (around 20x10 mm in size) instead of just the IC. Is this normal, or did I purchase the wrong version?

  4. On the other hand, the IC on the STM32WB5MM-DK Discovery Kit looks like an appropriate size. Would this board be a good option to use?

Thank you in advance for your support.

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1 REPLY 1
STTwo-32
ST Employee

‎2025-09-05 8:22 AM

Hello @bglglrr and welcome to the ST Community.

  1. The STM32WB05KN MCUs are not intended to be used as standalone MCUs for running both application code and the BLE stack. They are designed to act as BLE coprocessors, requiring an external host microcontroller to manage the application logic while the STM32WB05KN handles BLE protocol operations.
  2. If you want to use it with an external hot MCU, you can test it using the The X-NUCLEO-WB05KN1.
  3. The 20x15mm RFI Shield is not the MCU, it covers the real MCU just to reduce electromagnetic and radio frequency interference that can disrupt the functionality of electronic devices. the real MCU dimensions are available on the footprint example on the datasheet of the MCU.
  4. The STM32WB5MM-DK is based on the STM32WB5M module. The STM32WB and the STM32WB0 are two different series. So, you can't use it for evaluation.

So, i suggest you migrate to the STM32WB05KZ if you want to use it as a standalone MCU and you have the NUCLEO-WB05KZ board that you can use it for MCU evaluation.

Best Regards.

STTwo-32

 

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