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Adafruit Metro M4 Express

AdafruitATSAMD51

The Adafruit Metro M4 Express is a powerful microcontroller board featuring an ATSAMD51 processor with 120MHz clock speed, 3.3V logic level, and extensive I/O capabilities.

In stock

Specifications

1
Operating Voltage
7-9V, 5V USB source (3.3V logic level) [VIN, 5V, 3.3V] [GND] [DC jack: 6-12V] [USB: 500mA, DC jack: 800mA] [Vin: max 2A] [Fuses: USB 1000mA, DC jack no fuse] [On/Off switch for DC jack only] [3.3V regulator: 500mA peak] [5V regulator: ~500mA from USB, ~800mA from DC] [GND common ground] [Vin higher of DC or USB voltage] [DC jack center positive] [MicroUSB port for 500mA] [Onboard regulators convert power to 3.3V and 5V] [Logic level: 3.3V] [Flash memory: 2MB QSPI] [RAM: 192KB] [Clock speed: 120MHz] [PWM outputs: #2-#13, A0-A1 true analog output] [Interrupt inputs: all pins] [Analog inputs: A0-A5] [Digital I/O: GPIO #0-#13] [SPI: SCK/MOSI/MISO] [I2C: SDA/SCL] [UART: Serial1 (TX/RX)] [NeoPixel: 1 on board] [RGB LED: 1 on board] [Status LEDs: 4 on board] [Dimensions: 68.59mm x 37.02mm] [Connectivity: Native USB, QSPI flash storage] [USB interface for serial data and code updates] [Bootloader: UF2 v3.3.0-adafruit.10 or later recommended] [CircuitPython support] [Arduino IDE support] [MakeCode support] [Firmware update via bootloader] [Power management: Dual 1 MSPS ADC, 6 x hardware SERCOM (I2C, SPI or UART), 16 x PWM outputs, stereo I2S input/output with MCK pin, 10-bit parallel capture controller, built-in crypto engines with AES (256 bit), true RNG, Pubkey controller] [Other features: Dual 1 MSPS DAC (A0 and A1)]

Pinout

10
PinNameFunctionsNotes
0RX
GPIO
Serial1 receive
1TX
GPIO
Serial1 transmit
2-12GPIO #2-#12
GPIO
Can be PWM outputs if marked with a dot
13LED
PWM
Red LED next to USB jack
SDAI2C Data
I2C
SCLI2C Clock
I2C
A0Analog In 0
ADC
True analog output with DAC
A1Analog In 1
ADC
True analog output with DAC
A2-A5Analog In 2-4
GPIO
SCK/MOSI/MISOSPI
SPI

Interactive pinout

Highlight:
ATSAMD51

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