Presentation

The Adafruit Trinket card is the Atmel ATtiny85 microcontroller-based which allows to reduce the size of the card for the smallest possible embedded applications to maxium.

It is compatible with the Arduino IDE, and it is directly programmable thanks to its mini-USB port.

Features

    Micro-controller: ATTiny85
    Nominal supply voltage: 3V3
    GPIO: 5 including 2 shared with USB and 2 capable of PWM and 1 capable analog acquisition
    Possibility of acquiring I2C/SPI
    Flash memory: 8 KB including 2.75 KB for the bootloader
    SRAM: 512 B
    EEPROM: 512 B
    Clock frequency: 8 MHz to 16 Mhz by software
    Connectivity: MicroUSB
    Dimension: 31mm x 15.5 x 5mm

Documentation

Adafruit Triket documentation: http://learn.adafruit.com/introducing-trinket

Datasheet of the ATMEL ATTiny 85: http://www.Atmel.com/devices/attiny85.aspx