Getting Started Guide

functional on the board. Secondly, there is a tiny and elegant reset button on
one side of the Type-C interface. On the other side, it is designed in a
three-in-one LED along with a power LED. There are 11 digital i/o that can be
used as PWM pins and 6 analog i/o that can be used as ADC pins. It supports
UART, IIC, and SPI all three common serial ports. Same as XIAO RP2040, it
has an onboard 2 MB flash which means it can also be programmed by
Arduino, Micro Python, Circuit Python, or other program languages.
Features
 Powerful wireless capabilities: Bluetooth 5.0 with onboard antenna
 Powerful CPU: Nordic nRF52840, ARM® Cortex®-M4 32-bit processor
with FPU, 64 MHz
 Ultra-Low Power: Standby power consumption is less than 5μA
 Battery charging chip: Supports lithium battery charge and discharge
management
 Onboard 2 MB flash
 Onboard PDM microphone
 Onboard 6-axis LSM6DS3TR-C IMU
 Ultra Small Size: 20 x 17.5mm, XIAO series classic form-factor for wear
able devices
 Rich interfaces: 1xUART, 1xI2C, 1xSPI, 1xNFC, 1xSWD,
11xGPIO(PWM),6xADC
 Single-sided components, surface mounting design