Question
STM32F071CBT6TR unresponsive feedback button
What could be the possible reason for the unresponsive feedback button on the production line? The defect rate is about 2% (total of 2000PCS).
The circuit diagram is as follows.
We conducted a plug-in replacement experiment, and the phenomenon followed the STM32F071CBT6TR.
We plan to conduct IV curve experiments on pins 39, 40, and 41 to determine if there are any issues with these pins. Additionally, we suspect that there may be a problem with pin 6. Have you encountered similar phenomena before? Where is the problem usually?