NUCLEO-H723ZG LSE option is grayed out in CUBE MX version 6.9.1

[FCamp.1]

Hello,

I'm in Cube MX and trying to activate the LSE option of my NUCLEO-H723ZG but the option is not available. I see many others which are notavailable.

Why? I see that the external low frequency oscillator is correctly installed into the board...

Cheers.

Filippo

[TDK]

What do you mean by not available? Where are you seeing that? LSE is enabled by default on that board if you select that board from the board selector.

If you're wondering why the RTC clock mux selection is grayed out, you need to enable the RTC first to be able to use the clock select mux for RTC.

[FCamp.1 · Accepted solution]

I found it.

it must be activated from the RCC and then you need to enable the RTC.

Cheers,

Filippo