Flash: 68K (of which 12 KB used by bootloader, 55K used by the user code area, 1K used by EEPROM)
EEPROM: 1K
SPI: 1 port (D14, D15, D16)
IIC / I2C: 1 port (D2, D3)
USB COM port: 1 (Serial)
USB Serial port: 1 (USBSerial)
BLuetooth Serial port: Serial (USB COM port, Bluetooth and Hardware Serial Port 1 share the same port: Serial)
Hardware serial port: 2 (Serial, Serial2)
Serial D0 (Rx1) and D1 (Tx1)
Serial2 D24 (Rx2) and D25 (Tx2)
Size: 68.5 * 53.4 mm/ 2.69 * 2.10 inches
Weight: 30g
NOTE:
• Different from official Arduino M0, Bluno M0 adopts a unique chip solution which should be installed independently. It supports Windows, Linux and MAC.
• The default IDE version should be 1.6.0 and above, other versions should be modified according to FAQ instructions.