Microcontroller: SAMD21 Cortex®-M0 32bit low power ARM MCU Radio module: u-blox NINA-W102 Secure Element: ATECC608A Operating Voltage: 3.3V Input Voltage (limit): 21V DC Current per I/O Pin: 7 mA Clock Speed: 48MHz CPU Flash Memory: 256KB SRAM: 32KB EEPROM: none Digital Input / Output Pins: 14 PWM Pins: 11 (2, 3, 5, 6, 9, 10, 11, 12, 16 / A2, 17 / A3, 19 / A5) UART: 1 SPI: 1 I2C: 1 Analog Input Pins: 8 (ADC 8/10/12 bit) Analog Output Pins: 1 (DAC 10 bit) External Interrupts: All digital pins (all analog pins can also be used as interrupt pins, but will have duplicated interrupt numbers) LED_BUILTIN: 13 USB: Native in the SAMD21 Processor IMU: LSM6DS3 Length: 45 mm Width: 18 mm Weight: 5 g (with headers)
