What is value od HSE on nucleo L432KC?

oeliks · ‎2021-08-15

Hi, what is the value of HSE on nucleo nano board stm32l432kc ?

https://www.st.com/en/evaluation-tools/nucleo-l432kc.html#overview

Future : 24MHz crystall

But when I initialize default settings in cubemx it sets HSE as 8 MHz.

Cant find value of HSE on board in board User Manual.

waclawek.jan · ‎2021-08-15

There is no HSE crystal mounted on Nucleo-32, and also there's no OSC_OUT pin on the 'L432KC, so you cannot use a crystal for HSE with that chip.

It still has OSC_IN, so you can use an external oscillator and HSE in Bypass mode. On the Nucleo-32, you would need to connect SB17 which connects the MCO output from the on-board STLink chip ('F103) to PA0 of the target i.e. 'L432KC, and the STLink's MCO output is 8MHz.

JW

View solution in original post

waclawek.jan · ‎2021-08-15

There is no HSE crystal mounted on Nucleo-32, and also there's no OSC_OUT pin on the 'L432KC, so you cannot use a crystal for HSE with that chip.

It still has OSC_IN, so you can use an external oscillator and HSE in Bypass mode. On the Nucleo-32, you would need to connect SB17 which connects the MCO output from the on-board STLink chip ('F103) to PA0 of the target i.e. 'L432KC, and the STLink's MCO output is 8MHz.

JW