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STM32G0B1CET6N VDDIO2

ben-sachs
Associate

‎2026-04-28 12:17 PM

Hello I'm trying to wire up the STM32G0B1CET6N and I don't know how to use the VDDIO2 pin. What is it for and how should I wire it?

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Shirley.Ye
ST Employee

‎2026-04-28 6:36 PM

For the STM32G0B1CET6N, the VDDIO2 supply powers GPIO PG[15:2]. In a normal design, you can tie VDDIO2 to VDD and add a local decoupling capacitor.

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Andrew Neil
Super User

‎2026-04-29 7:02 AM

Did you check the datasheet?

Hint: it's a PDF document, so you can use the 'Search' facility to find all occurrences of "VDDIO2":

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https://www.st.com/resource/en/datasheet/stm32g0b1ce.pdf#page=17

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See also Application Notes AN5096, Getting started with STM32G0 MCUs hardware development

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
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