SparkFun 3.5 Teensy ARM Cortex M4 with connectors - compatible with Arduino*
The module with small size and great possibilities. Equipped with a 32bit microcontroller with core ARM Cortex M4 120 MHz, 512 KB Flash, 192 KB RAM. It has 62 pins of I/o, in which are 20 PWM channels, 25 analog inputs and 2 outputs, the DMA controller and popular communication interfaces: SPI, I2C, I2S, CAN. Leads operate at a voltage of 3.3 V, however, tolerate a value of 5 V.