CPU: Dual-core ARM Cortex M0+ processor, with a flexible clock operating at a frequency as high as 133 MHz
Storage: 264KB SRAM, 2MB on-board flash memory
1/0 pins: 11 digital pins, 4 analog pins, 11 PWM pins
Interfaces: 1 I2C interface, 1 UART interface, 1 SPI interface, 1 SWD Bondingpad interface
Power supply and download interface: USB Type-C interface
Leds: 1 user LED, 1 power LED, 2 serial port download leds, 1 RGBLED
Buttons: 1 RESET button, 1 BOOT button
Power pad: Used for battery power supply
Software compatibility: support Micropython/Arduino/CircuitPython