Datasheet

Pinouts

Power Pins

We'll start with the top pins BAT+, USB+, 3V/5V, and GND

BAT+ is the Battery + Input pin. If you want to power the Pro Trinket from a battery

or power adapter or solar panel or any other kind of power source, connect the +

(positive) pin here! You can connect up to 16V DC. If you have a 3V Pro Trinket, you'll

want at least 3.5V input to get a good 3.3V output. If you have a 5V Pro Trinket, 5.5V or

higher is suggested. This input is reverse-polarity protected.

BUS is the USB Bus + Output pin. If you want to use the USB 5V power for

something, like charging a battery, or if you need more than 150mA of current (this pin

There are two versions of the Pro Trinket: 3V and 5V. They are almost identical but

there are slight differences in the pinouts: one has a 3V output pin in the top right, the

other has a 5V output pin instead

Industries

https://learn.adafruit.com/introducting-pro-trinket Page 13 of 41