STM32G0 NRST input structure and clamping diodes

pp_ee · ‎2025-03-10

Hello, i am interested in the input structure of the NRST pin of the STM32G0x0 series. The datasheet shows a reduced diagram. My question is: is there a more detailed version of the input structure. Is a clamping diode to Vcc build in? If so, which current can this diode handle?

Thank you & best regards

Philipp

Peter BENSCH · ‎2025-03-10

Welcome @pp_ee, to the community!

Why should there be a clamping diode there?

A large, charged capacitor should not be located there, 100nF should be sufficient in the vast majority of cases. These 100nF do not contain enough energy to cause destruction.

Regards
/Peter

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