Datasheet

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Guide Contents
Guide Contents
Overview
Guided Tour
Pinouts
Power Pins
GPIO Pins
Logic Level
The Digital Only GPIO Pins
The Analog/Digital GPIO Pins
The Analog only pins
Other Pins
FTDI Breakout
Windows Driver Installation
Manual Driver Installation
Using the USB Bootloader
About the bootloader
Pro Trinket USB Drivers for Windows
Special Notes on using Pro Trinket with Linux
How to start the USB bootloader
Using FTDI Cables
Select the correct Board in IDE
Connect FTDI Friend or Cable
Setting up Arduino IDE
Arduino IDE Setup
Blink!
Something Went Wrong!
If you get the error message avrdude: Error: Could not find USBtiny device (0x1781/0xc9f)
Hints for Arduino-compatibility
Re-programming Bootloader
F.A.Q.
I'm trying to use Software Serial on the Pro Trinket 3V and getting compiler errors
My Pro Trinket sometimes doesn't "boot" or "run code" on power up
I've tried everything, but I still get the "Could not find USBtiny device" error
Can I use an EZ-Link to program a Pro Trinket?
Downloads
Datasheets & Files
Source code
Schematics
Pro Trinket 5V 16MHz:
Pro Trinket 3V @ 12MHz
© Adafruit Industries https://learn.adafruit.com/introducing-pro-trinket Page 2 of 38