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Reference

Teensy 4.1 Pins

Pin Assignments, Front Side (PDF)
Pin Assignments, Back Side (PDF)

Teensy 4.0 Pins

Pin Assignments, Front Side (PDF)
Pin Assignments, Back Side (PDF)

Teensy 3.6 Pins

Pin Assignments, Front Side (PDF)
Pin Assignments, Back Side (PDF)

Teensy 3.5 Pins

Pin Assignments, Front Side (PDF)
Pin Assignments, Back Side (PDF)

Teensy 3.2 Pins

Pin Assignments, Front Side (PDF)
Pin Assignments, Back Side (PDF)

Teensy-LC Pins

Pin Assignments, Front Side (PDF)
Pin Assignments, Back Side (PDF)

Teensy 3.1 Pins

Pin Assignments, Front Side (PDF)
Pin Assignments, Back Side (PDF)
User created alterative pinout charts are available:

Teensy 3.0 Pins

Pin Assignments, Front Side (PDF)
Pin Assignments, Back Side (PDF)

Teensy++ 2.0 Pins

Pin Assignments, Using C Language (PDF)
Pin Assignments, Using Arduino Software (PDF)

Teensy 2.0 Pins

Pin Assignments, Using C Language (PDF)
Pin Assignments, Using Arduino Software (PDF)

Teensy++ 1.0 Pins

Pin Assignments, Using C Language (PDF)
Pin Assignments, Using Arduino Software (PDF)

Teensy 1.0 pins

Pin Assignments, Using C Language (PDF)
Pin Assignments, Using Arduino Software (PDF)