- 32 bit ARM Cortex-M0+ 48 MHz CPU
- 62kB Flash Memory, 8kB RAM, 1/8(emu)kB EEPROM
- 13 High-Resolution Analog Inputs
- 27 Digital I/O Pins (NOT 5V Tolerant)
- 10 PWM outputs
- 7 Timers for intervals/delays, separate from PWM
- 3 UARTs (serial ports)
- SPI, I2C, I2S
- I2S (for the high-quality audio interface)