How to configure HSE on Nucleo U5A5ZJ

[liquidloop]

Hi Team,

I am trying to use the HSE for Nucleo U5A5ZJ but I have some confusion. The document says ..

"HSE is the 16 MHz oscillator for the STM32 microcontroller. This clock is available depending on the target
STM32 series microcontroller used on the Nucleo-144 board."

So does this board have the external oscillator or not?

In the clock configuration diagram, it defaults the Input frequency to 8MHz. Why?

Even if i use this 8MHz HSE deploying the code to the board results in messages like "Target is not responding, retrying...".

Can you please give some guidance.

Thanks.
Sandeep

[TDK]

Does your board have a crystal in the X3 position, or is it empty?

[waclawek.jan]

At  

https://www.st.com/en/evaluation-tools/nucleo-u5a5zj-q.html#cad-resources 

is the schematics; identify which one is the oscillator; then at the same page in Bill of Materials, try to find that oscillator.

JW