A/D Specs for the Grand Central M4 Express

[sZed]

What is the maximum input voltage and resolution of the A/D converters in the Grand Central M4?

The SAMD51 spec says that by default the A/Ds are configured to read to 12-bit precision and I think I saw somewhere that the max input is 5V.

When I do an analogRead() on a voltage that I can vary between 0.0 and 5.0V the maximum output value I see is 1023 at 3.3V input, so it looks like it’s only a 10-bit reading.

Thanks

[adafruit_support_bill]

AnalogRead defaults to 10 bit resolution for backwards compatibility. You can change that for boards that support higher resolution.
https://www.arduino.cc/reference/en/lan ... esolution/

The absolute maximum rating for any pin is VDD * 0.6v. https://ww1.microchip.com/downloads/en/ ... 01507G.pdf