Do I have to use a 32 kHz oscillator (LSE) for the STM32WB55 MCU ZigBee application?

Batuhan A. · ‎2021-06-10

Hello,

I am going to use a 32 MHz oscillator (LSE) for a ZigBee application on STM32WB55. Do I have to add a 32 kHz oscillator? I do not need RTC.

Best regards,

Batuhan

Peter BENSCH · ‎2021-06-14

You can use the STM32WB55 without the LSE if you:

don't need an RTC and
don't need beaconing support and
don't want to synchronize internal oscillators from LSE

If the problem is resolved, please mark this topic as answered by selecting Select as best. This will help other users find that answer faster.

Good luck!

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

View solution in original post

Peter BENSCH · ‎2021-06-14

You can use the STM32WB55 without the LSE if you:

don't need an RTC and
don't need beaconing support and
don't want to synchronize internal oscillators from LSE

If the problem is resolved, please mark this topic as answered by selecting Select as best. This will help other users find that answer faster.

Good luck!

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.