21 mm × 51 mm form factor RP2040 microcontroller chip designed by Raspberry Pi in the UK Dual-core Arm Cortex-M0+ processor, flexible clock running up to 133 MHz 264kB on-chip SRAM 2MB on-board QSPI flash 2.4GHz 802.11n wireless LAN (Raspberry Pi Pico W and WH only) 26 multifunction GPIO pins, including 3 analogue inputs 2 × UART, 2 × SPI controllers, 2 × I2C controllers, 16 × PWM channels 1 × USB 1.1 controller and PHY, with host and device support 8 × Programmable I/O (PIO) state machines for custom peripheral support Supported input power 1.8–5.5V DC Operating temperature -20°C to +85°C (Raspberry Pi Pico and Pico H); -20°C to +70°C (Raspberry Pi Pico W and Pico WH) Castellated module allows soldering direct to carrier boards (Raspberry Pi Pico and Pico W only) Drag-and-drop programming using mass storage over USB Low-power sleep and dormant modes Accurate on-chip clock Temperature sensor Accelerated integer and floating-point libraries on-chip