This is an inquiry regarding STM32G031 PF2-NRST, PA14-BOOT0 Pin settings.

Paul6 · ‎2024-09-24

I am using the STM32G031 MCU, and if you look at the picture below in the STM32 CubeMX,

there are no NRST and BOOT0 settings at the PF2-NRST and PA14-Boot0 Pin

I am curious as to whether it is set as default even if I do not configure it, or if there is a way to set it separately. help!!

STTwo-32 · ‎2024-09-24

Hello @Paul6 and welcome to the ST community.

For the PF2-NRST, we have a note under the table 120 of the DS12992 that says:

"PF2-NRST default functionality is NRST, if used in this mode on SO8 and WLCSP, take particular care to configuration of other IOs connected to this pin."

and for the PA14-BOOT0 is the default function if you are not setting the Pin for another function.

Best Regards.

STTwo-32

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TDK · ‎2024-09-24

The PF2-NRST pad is tied to both PF2 and NRST internally. Always. Similar for PA14-BOOT0. You can change how NRST and BOOT0 behave through the option bytes via STM32CubeProgrammer. Default values are highlighted here.

Note that since nBOOT_SEL=1 by default, the value on the BOOT0 pin is ignored in favor of the nBOOT0 option bit.

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