RP2040 microcontroller chip designed by Raspberry Pi
Dual-core Arm Cortex M0+ processor, the flexible clock running up to 133 MHz
264KB of SRAM, and 2MB of onboard Flash memory
26 × multi-function GPIO pins
2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels
Onboard temperature sensor