RP2040 is a low-cost, high-performance microcontroller device with flexible digital interfaces. Key features: Dual Cortex M0+ processor cores, up to 133 MHz 264 kB of embedded SRAM in 6 banks 30 multifunction GPIO 6 dedicated IO for SPI Flash (supporting XIP) Dedicated hardware for commonly used peripherals Programmable IO for extended peripheral support 4 channel ADC with internal temperature sensor, 0.5 MSa/s, 12-bit conversion USB 1.1 Host/Device