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nucleo-g431kb voltage reference buffer

LLah.1
Associate II

Hello everyone!

I'm want to use the internal reference voltage buffer of the mcu stm32g431kb as input with comparator, but when i checked the reference manual they say VEREFBUF must kept disabled because no VREF+ pin in 32 pin package!!

I don't want the VREF+ pin, can i use the VEREFBUF internally with comparator??

Thanks.

0693W000003Bte5QAC.png

1 REPLY 1
TDK
Guru

In that package, VREF+ is bonded directly to VDDA. You can't use any configuration that requires the two to be different. This means you can't use VREFBUF output as a voltage reference.

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