4 votes
Accepted

How to ground an oscilloscope when our home has no ground?

You should not connect scope ground and signal to the two crystal pins. Scope ground should be connected to MCU ground pin so you can probe one crystal pin with one probe.
  • 96k
3 votes

Separation of digital and analog grounds in evaluation board

This is common problem that is misunderstood. The pin labels indicate which "ground" domain is used internally in the chip. In the chip it is difficult to connect these domains with a low ...
  • 2,748

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