scematic STM32G0B1CBT6 for audio project

[radescu]

Hello All,

I need some guidance from you. I have a project with an STM32 microcontroller, encoders with push buttons, USB communication (for firmware updates and communicating with a Windows app, etc). MIDI in out communication, digital potentiometers, and digital switches.

Can someone help me, please, and take a look at my diagram to correct it before starting to make the prototype board? My experience with stm is really limited. I heard that a lot of decoupling capacitors are needed.

Can you please give me some support and point out what I should correc tin the attached diagram?

Thank you very much!

Alex

[Uwe Bonnes]

Regarding USB: You need 5k1 on A5 and B5 or on a pure USB-C connection things will only work in one direction of the USB-C plug.

Connect VBAT

No pull-up and additional capacitor on PF2 when use in its reset incarnation.

Compare with Nucleo boards too.

[TDK]

Consider using a standard programmer connector rather than a generic header.

Otherwise seems fine, apart from the notes above.

Getting started with STM32G0 MCUs hardware development - Application note

[radescu]

Thank you very much for your support.

I reviewed the diagram and corrected what you pointed.

I also read the document from the above link, and is very useful, also later when I will design the PCB.

For the connector, do you mean this one: FTSH-105-01-l-DV - 2 rows of pins?

The decoupling capacitors are ok?

Sorry to bother you

Thank you!

[TDK]

Your USB connector still doesn't seem right.

• Both D+ and both D- pins should be connected.
• Pin B5 is CC2, not VCONN

Bypass capacitors seem okay. Technically not meeting the datasheet recommendations of a 4.7 uF bulk capacitor.

Getting started with STM32G0 MCUs hardware development - Application note