DEV-11781 Datasheet PDF - SparkFun Electronics

Description:
   The Teensy is a breadboard-friendly development board with loads of features in a, well, teensy package. The Teensy++ breaks out all of the IO available on the AT90USB1286 to breadboard-friendly 0.1" spaced headers so you can hook up a load of peripherals.
   The Teensy++ comes pre-flashed with a bootloader so you can program it using the on-board USB connection: No external programmer needed! You can program the Teensy in your favorite IDE using C or you can install the Teensyduino add-on for the Arduino IDE and write Arduino sketches for Teensy!

FEATUREs:
• 8-Bit AVR Processor (AT90USB1286)
• 128K Flash Memory, 8K RAM, 4K EEPROM
• USB Can Emulate Any Type of Device
• Single Pushbutton Programming
• Arduino Compatible
• 8 Analog Inputs
• 46 Digital I/O Pins
• 9 PWM outputs
• SPI and I2C