Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+

DESCRIPTION

Take a look at Seeeduino XIAO the smallest member of the Seeeduino family. The Seeeduino XIAO still carries the powerful CPU-ARM® Cortex®-M0+(SAMD21G18) which is a low-power Arduino microcontroller, ensuring that it provides good processing performance while requiring less power. Its tiny design means that it is great when used for Arduino wearable devices and small projects.

Apart from the strong CPU, Seeeduino XIAO is excellent in many other ways. It has 14 GPIO PINs, which can be used for 11 analogue PINs, 11 digital PINs, 1 I2C interface, 1 UART interface, and 1 SPI interface. Some PINs have various functions, A1/D1 to A10/D10 Pins have PWM functions and Pin A0/D0 has a function of DAC which means you can get true analogue signals not PWM signals when you define it as an analogue pin. Moreover, Seeeduino XIAO supports the USB Type-C interface which can supply power and download code. There are power pads at the back of the XIAO which support the battery and make it designed for wearable devices to become realistic. Except for the power LED, they've added a user LED on board for your better coding experience. Usually a Dev. A board as small as this size will use the chip’s inner crystal oscillator for time fixing, in order to make the clock more accurate, Seeeduino XIAO layouts an extra 32.768KHz to make the clock more stable.

Typical applications of this device include

• Wearable devices
• Rapid prototyping (directly attached to the expanded PCB as a minimal system)
• Perfect for all the projects that need a mini Arduino
• DIY keyboard
• USB development (USB to multi-channel TTL/USB host mode, etc.)
• In a scenario where you need to read multiple mock values The DAC output

Please Note: 

• All the I/O pins are 3.3V, please do not input more than 3.3V, otherwise, the CPU may be damaged.

FEATURES

• Powerful CPU: ARM® Cortex®-M0+ 32bit 48MHz microcontroller(SAMD21G18) with 256KB Flash,32KB SRAM
• Flexible compatibility: Compatible with Arduino IDE
• Easy project operation: Breadboard-friendly
• Small size: As small as a thumb(20x17.5mm) for wearable devices and small projects.
• Multiple development interfaces: 11 digital/analogue pins, 10 PWM Pins, 1 DAC output, 1 SWD Bonding pad interface, 1 I2C interface, 1 UART interface, 1 SPI interface

Specification

• CPU: ARM Cortex-M0+ CPU(SAMD21G18) running at up to 48MHz
• Storage: 256KB Flash,32KB SRAM
• I/O PINs: 14 GPIO PINs,11 analogue PINs, 11 digital PINs, 1 DAC output Pin
• Interface: 1 I2C interface,1 UART interface, 1 SPI interface
• Power supply and downloading interface: USB Type-C interface
• LEDs: 1 user LED, 1 power LED, two LEDs for serial port downloading
• Reset button: two reset buttons short connect to reset
• Power Pads: For the battery power supply
• Software compatibility: Compatible with Arduino IDE
• Projection cover for protecting the circuit
• Dimensions: 20x17.5x3.5 mm

RESOURCES

• Seeeduino XIAO - Arduino Microcontroller Wiki
• Seeeduino XIAO HDK