1. RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
2. Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz
3. 264KB of SRAM, and 2MB of on-board Flash memory
4. Onboard 5 × 5 RGB LED matrix for colorful lighting display
5. Castellated module allows soldering direct to carrier boards
6. USB 1.1 with device and host support
7. Low-power sleep and dormant modes
8. Drag-and-drop programming using mass storage over USB
9. 20 × multi-function GPIO pins
10. 2 × SPI, 2 × I2C, 2 × UART, 4 × 12-bit ADC, 16 × controllable PWM channels
11. Accurate clock and timer on-chip
12. Temperature sensor
13. Accelerated floating-point libraries on-chip
14. 8 × Programmable I/O (PIO) state machines for custom peripheral support