STM32WL55 TCXO-PB01

[robha]

Hello!

I'm using the STM32WL55CCU6 in a design and have a question:

TCXO: I'm using a TCXO connected according to the datasheet. If I select TCXO in CubeIDE I have to use PB01 as TCXO-VDD. My plan was to use PB01 as GPIO. Is that possible? How? -> If i change the Pin to GPIO, it deselects the TCXO in the clock config.

(TCXO is connected to the on-board-power-supply)

best regards

Robert

[STTwo-32 · Accepted solution]

Hello @robha and welcome to the ST Community :smiling_face_with_smiling_eyes:.

The TCXO should be connected to the PB0-VDD_TCXO on the MCU. So, you can't use the PB0 as GPIO pin in this case.

Best Regards.

STTwo-32