Datasheet

Other Pins
Aref - this is the optional analog reference pin for the analog converter, to be used when you want the 'top' of
the analog converter to be different than 3V or 5V. Connect this to your desired reference voltage (between 0
and the Pro Trinket voltage) and use analogReference(EXTERNAL)
RST - This is the Reset pin for the Pro Trinket. Connecting this to ground momentarily resets the Trinket and also
starts up the bootloader.
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