← All parts
Adafruit Metro M0 Express
AdafruitATSAMD21G18
A microcontroller board for use with Arduino IDE, CircuitPython, and MakeCode. Features a powerful ARM Cortex M0+ processor.
In stock
Specifications
8- Operating Voltage
- 3.3V-5V (USB) or 6-12V (DC jack)
- Logic Level
- 3.3V
- Clock Speed
- 48MHz
- Flash
- 256KB bytes
- Ram
- 32KB bytes
- Gpio Count
- 25
- Dimensions
- 2.8" x 2.1" x 0.28"
- Connectivity
- USB, I2C, SPI, UART
Pinout
10| Pin | Name | Functions | Notes |
|---|---|---|---|
| 0 | RX | UART | Serial1 receive |
| 1 | TX | UART | Serial1 transmit |
| 2-12 | GPIO #2-#12 | GPIOPWM | General purpose I/O, some can act as PWM outputs |
| 13 | LED | GPIO | Red LED for general purpose blinking |
| A0-A5 | Analog Inputs #A0-#A5 | ADC | Analog inputs and digital I/O pins |
| 36 | MISO | SPI | Master In, Slave Out for SPI |
| 37 | MOSI | SPI | Master Out, Slave In for SPI |
| 38 | SCK | SPI | Serial Clock for SPI |
| 39 | CS | SPI | Chip Select for SPI |
| 40 | NEOPIXEL | GPIO | NeoPixel RGB LED connected to this pin |
Interactive pinout
Highlight:
ATSAMD21G18
Click a pin to copy its name · tap a tag above to spotlight a bus.