RP2040

ARM-architecture microcontroller by the Raspberry Pi Foundation

RP2040 microcontroller

RP2040 die shot

A PhobGCC, an open-source motherboard replacement for the GameCube controller designed for competitive Super Smash Bros. Melee, powered by the RP2040

RP2040 is a 32-bit dual ARM Cortex-M0+ microcontroller integrated circuit^[1][2][3] by Raspberry Pi Ltd. In January 2021, it was released as part of the Raspberry Pi Pico board.^[1] Its successor is the RP2350 series.

Overview

Announced on 21 January 2021, the RP2040 is the first microcontroller designed by Raspberry Pi Ltd.^[1][2] 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++, Swift,^[4] Free Pascal, Rust,^[5] Go,^[6] MicroPython, CircuitPython,^[1][7] Ada^[8] and TypeScript.^[9] It is powerful enough to run TensorFlow Lite.^[1]

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 in to production.^[10]

Hackaday notes the benefits of the RP2040 as being from Raspberry Pi, having a good feature set, and being released in low-cost packages.^[11]

Multiple stepping levels of the chip have been produced.^[12]

Features

The chip is 40 nm silicon in a 7 × 7 mm QFN-56 surface-mount device (SMD) package manufactured by TSMC.^[13]

• Key features:^[14]
  • 133 MHz dual ARM Cortex-M0+ cores (ARMv6-M) (supports overclocking^[3])
    • Each core has an integer divider peripheral, and two interpolators.
  • 264 KB SRAM in six independent banks (four 64 KB, two 4 KB)
  • No internal flash or EEPROM memory (after reset, the boot-loader loads firmware from either external flash memory or USB into internal SRAM)
  • QSPI bus controller supports up to 16 MB of external flash memory
  • DMA controller, 12 channel, 2 IRQ. (NOTE: RP2350 family has 16 and 4).
  • AHB crossbar, fully-connected
  • On-chip programmable low-dropout regulator (LDO) to generate core voltage
  • Two on-chip PLLs to generate USB and core clocks
  • 30 GPIO pins, of which four can optionally be used as analog inputs

• Peripherals:
  • One USB 1.1 (LS & FS) controller and PHY, host and device support, 1.5 Mbps (Low Speed) and 12 Mbps (Full Speed).
  • Two UART controllers.
  • Two SPI controllers.
  • One QSPI (quad SPI) controller (SSI), supports 1 / 2 / 4-bit SPI transfers, 1 chip select.
  • Two I²C controllers.
  • Eight PIO (programmable input–output) state machines. (NOTE: RP2350 family has 12).
  • 16 PWM channels. (NOTE: RP2350 family has 24).
  • 4-channel 12-bit 500-ksps SAR ADC, extra channel is connected to internal temperature sensor. (NOTE: RP2350 family has 4 or 8 depending on package).

Boards

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

See also

• Arduino – a popular microcontroller board family
• ESP32 – a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth.
• STM32 – a family of 32-bit microcontroller integrated circuits
• Raspberry Pi – Raspberry Pi's series of small single board computers
• Thumby (Game Console) – a thumb-sized micro-console powered by the RP2040

References

1. "Meet Raspberry Silicon: Raspberry Pi Pico now on sale at $4". January 21, 2021.
2. Adams, James (1 February 2021). "Raspberry Pi RP2040: Our Microcontroller for the Masses". Arm Blueprint. Retrieved 20 February 2021.
3. "RP2040 Datasheet" (PDF). Raspberry Pi Ltd. Retrieved 20 February 2021.
4. apple/swift-embedded-examples, Apple, 2024-06-14, retrieved 2024-06-14
5. "Rust on the RP series of microcontrollers". GitHub. Retrieved 29 March 2023.
6. "Raspberry Pi Pico". TinyGo. Retrieved 2024-09-10.
7. Rembor, Kattni. "Getting Started with Raspberry Pi Pico and CircuitPython". Adafruit Learning System. Adafruit. Retrieved 17 February 2023.
8. "Ada on the Raspberry Pi Pico". Retrieved 10 July 2023.
9. "RP2040 | DeviceScript". microsoft.github.io. Retrieved 2023-11-28.
10. "Tweet". twitter.com. Retrieved 2021-02-18.
11. Williams, Elliot (20 January 2021). "Raspberry Pi Enters Microcontroller Game With $4 Pico". Hackaday. Retrieved 20 February 2021.
12. "RP2040 datasheet" (PDF). Raspberry Pi Ltd. 2 May 2024. p. 391. There are two hardware issues with the device controller, both of which have software workarounds on RP2040B0, RP2040B1, and are fixed in hardware on RP2040B2
13. "Raspberry Pi: Here's how we built our own chip to power the Pico". ZDNET. Retrieved 2023-10-05.
14. "RP2040 Datasheet" (PDF). raspberrypi.com. Retrieved 2021-03-28.
15. "Buy a Raspberry Pi Pico".
16. "Pico W - Raspberry Pi | Rasppishop - Raspberry Pi Boards und Zubehör". Pico W - Raspberry Pi | Rasppishop - Raspberry Pi Boards und Zubehör (in German). Retrieved 2023-09-04.
17. "Seeed Studio XIAO RP2040 - Supports Arduino, MicroPython and CircuitPython". www.seeedstudio.com. 2023-08-06. Retrieved 2023-09-04.
18. "Welcome Raspberry Pi to the world of microcontrollers". 20 January 2021.
19. "Tiny 2040 – Pimoroni".
20. "Keybow 2040 – Pimoroni".
21. "PicoSystem – Pimoroni".
22. "Adafruit Feather RP2040".
23. "Adafruit ItsyBitsy RP2040".
24. "Adafruit Metro RP2040".
25. "Adafruit QT Py RP2040".
26. "SparkFun Pro Micro - RP2040 - DEV-18288 - SparkFun Electronics".
27. "SparkFun Thing Plus - RP2040 - DEV-17745 - SparkFun Electronics".
28. "SparkFun MicroMod RP2040 Processor - DEV-17720 - SparkFun Electronics".
29. "Müsli USB Pmod™ Compatible Module".
30. "Werkzeug USB Multi-Tool".
31. Studio, WeAct (2023-08-17), RP2040 / WeAct Studio 微行工作室 出品, retrieved 2023-09-04
32. "RP2040-Zero, A Low-Cost, High-Performance Pico-Like MCU Board Based On Raspberry Pi Microcontroller RP2040". www.waveshare.com. Retrieved 2023-09-04.
33. "WIZnet W5100S-EVB-Pico".
34. "WIZnet W5500-EVB-Pico".
35. "WIZnet W6100-EVB-Pico".
36. "WIZnet WizFi360-EVB-Pico".
37. "0xCB Helios".
38. "Picopad".
39. "ESC – MUREX Robotics Documentation". docs.murexrobotics.com. Retrieved 2024-07-07.
40. "RP2040-PICO30 - Open Source Hardware Board". Olimex. Retrieved 2024-07-19.

External links

• Official webpage
• Official documentation