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

analo gReference(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.

Industries

https://learn.adafruit.com/introducting-pro-trinket Page 18 of 41