Description
The Adafruit Feather M0 Express features the ATSAMD21G18 ARM Cortex M0+ processor running at 48 MHz with 3.3V logic. This compact board boasts 256KB of FLASH and 32KB of RAM, offering significant memory capacity compared to previous microcontrollers. It includes built-in USB for programming and debugging without the need for an additional FTDI-like chip.
Key features include:
- Dimensions: 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers
- Lightweight at approximately 5 grams
- ARM Cortex M0+ ATSAMD21G18 @ 48MHz
- 256KB FLASH and 32KB RAM, no EEPROM
- 32.768 KHz crystal for clock generation and RTC
- 3.3V regulator with 500mA peak current output
- Native USB support with bootloader and serial debugging
- 20 GPIO pins with hardware serial, I2C, and SPI support
- PWM outputs on all pins
- 6 x 12-bit analog inputs and 1 x 10-bit DAC output
- Built-in 100mA LiPoly charger with charging status LED
- Red LED on pin #13 for general purpose blinking
- Power/enable pin, 4 mounting holes, and reset button
- Mini NeoPixel and 2 MB SPI Flash storage for CircuitPython file storage or Arduino datalogging
The Feather M0 Express comes fully assembled with the UF2 USB bootloader for easy drag-and-drop programming with CircuitPython, Arduino IDE, or PXT MakeCode. This board is ideal for fast and flexible prototyping with extensive community support and documentation.
Note: Lithium Polymer battery and USB cable are not included.
Learn more with our detailed guide including wiring, drivers, datasheets, and more.
