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Tool/software:
Hello team,
Should I tie the output of the unused ports to GND?
My customer has tied the inputs to GND, but they have observed oscillation at the output.
Best Regards,
Kei Kuwahara
All I/O pins are both inputs and outputs at all times.
Unused I/O pins can be left open.
Oscillations can happen only with a capacitive or inducitve load. Are there long traces or cables? Are you sure that the oscillations happen without the measurement device?
Hi Kei,
In addition to Clemens' questions, can you confirm the state of VCCA/ VCCB and OE at the time of oscillations?
Regards,
Jack