RP2040 is a 32-bit dual-core ARM Cortex-M0+ microcontroller designed by Raspberry Pi Ltd. In January 2021, it was released as part of the Raspberry Pi Pico board. Its successor is the RP2350 series.

Announced on 21 January 2021, the RP2040 is the first microcontroller designed by Raspberry Pi Ltd. The microcontroller is low cost, with the Raspberry Pi Pico being introduced at US$4 and the RP2040 itself costing US$1. The microcontroller can be programmed in assembly, C, C++, Forth, Swift, Free Pascal, Rust, Go, MicroPython, CircuitPython, PicoRuby, Ada, TypeScript and Zig. It is powerful enough to run TensorFlow Lite.

At announcement time, four other manufacturers (Adafruit, Pimoroni, Arduino, SparkFun) were at advanced stages of their product design, awaiting the widespread availability of chips to be put into production.

Hackaday notes the benefits of the RP2040 as being from Raspberry Pi, having a good feature set, and being released in low-cost packages.

Multiple stepping levels of the chip have been produced.

The RP2040 chip is a 7-by-7-millimetre (0.28 in × 0.28 in) QFN-56EP surface-mount device (SMD) package manufactured by TSMC using its 40 nm process.

For comparison with the RP2350, see RP2350 § Family comparison.

A number of manufacturers have announced their own boards using the RP2040. A selection of the growing number is here: