Adafruit ItsyBitsy M0 Express - for CircuitPython & Arduino IDE
Small ATSAMD21 Cortex-M0 board with 2MB SPI Flash supporting CircuitPython and Arduino IDE. Compact alternative to the Feather M0 Express where board area is constrained.
Small ATSAMD21 Cortex-M0 board with 2MB SPI Flash supporting CircuitPython and Arduino IDE. Compact alternative to the Feather M0 Express where board area is constrained.
MicroUSB 5V power pin output.
Battery input from BAT pin.
3.3V regulator output.
Common ground.
Regulator enable; tie low to shut off regulator when on battery.
Reset pin; tie to ground to reset/enter bootloader.
Analog input A0 and DAC analog output.
Analog input A1.
Analog input A2.
Analog input A3.
Analog input A4.
Analog input A5.
I2C hardware data pin.
I2C hardware clock pin.
Serial1 receive input, GPIO #0.
Serial1 transmit output, GPIO #1.
| Pin | Position | Type | Function |
|---|---|---|---|
| USB | Power pins | USB | MicroUSB 5V power pin output. |
| BAT | Power pins | Power | Battery input from BAT pin. |
| 3V | Power pins | Power | 3.3V regulator output. |
| GND | Power pins | Ground | Common ground. |
| EN | Power pins | Control | Regulator enable; tie low to shut off regulator when on battery. |
| RST | Control pins | Control | Reset pin; tie to ground to reset/enter bootloader. |
| A0 | Analog pins | Analog | Analog input A0 and DAC analog output. |
| A1 | Analog pins | Analog | Analog input A1. |
| A2 | Analog pins | Analog | Analog input A2. |
| A3 | Analog pins | Analog | Analog input A3. |
| A4 | Analog pins | Analog | Analog input A4. |
| A5 | Analog pins | Analog | Analog input A5. |
| SDA | I2C pins | I2C | I2C hardware data pin. |
| SCL | I2C pins | I2C | I2C hardware clock pin. |
| RX | UART pins | UART | Serial1 receive input, GPIO #0. |
| TX | UART pins | UART | Serial1 transmit output, GPIO #1. |
MicroUSB 5V power pin output.
Battery input from BAT pin.
3.3V regulator output.
Common ground.
Regulator enable; tie low to shut off regulator when on battery.
Reset pin; tie to ground to reset/enter bootloader.
Analog input A0 and DAC analog output.
Analog input A1.
Analog input A2.
Analog input A3.
Analog input A4.
Analog input A5.
I2C hardware data pin.
I2C hardware clock pin.
Serial1 receive input, GPIO #0.
Serial1 transmit output, GPIO #1.
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