Datasheet

Hints for Arduino-compatibility

The Pro Trinket uses the Atmega328P chip, which is the same core chip in the Arduino

UNO/Duemilanove/Mini/etc. It's the 'classic' Arduino chip! So you'll be happy to hear that not

only is Pro Trinket programmable using the Arduino IDE as you already set up, but 99% of

Arduino projects will work out of the box!

The Pro Trinket 5V runs at 16MHz, just like the Uno. The Pro Trinket 3V runs at 12MHz, which

we suggest for 'power users' who want a 3V Arduino-compatible and don't mind its a bit

slower at 12MHz.

The only changes you may have to consider when adapting Arduino sketches are:

Pins #2 and #7 are not available

The onboard 5V regulator can provide 150mA output, not 800mA out

You cannot plug shields directly into the Pro Trinket

There is no Serial-to-USB chip onboard. This is to keep the Pro Trinket small and

inexpensive, you can use any FTDI cable to connect to the FTDI port for a Serial

connection

Industries

https://learn.adafruit.com/introducting-pro-trinket Page 36 of 41