RP2040
ARM-architecture microcontroller by the Raspberry Pi Foundation
From Wikipedia, the free encyclopedia
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.[1] Its successor is the RP2350 series.[2]
Overview
Announced on 21 January 2021, the RP2040 is the first microcontroller designed by Raspberry Pi Ltd.[1][3] 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,[4] Swift,[5] Free Pascal, Rust,[6] Go,[7] MicroPython, CircuitPython,[1][8] PicoRuby,[9] Ada,[10] TypeScript[11] and Zig.[12] 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 into production.[13]
Hackaday notes the benefits of the RP2040 as being from Raspberry Pi, having a good feature set, and being released in low-cost packages.[14]
Multiple stepping levels of the chip have been produced.[15]
Features
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.[16]
- Key features:[17]
- Dual ARM Cortex-M0+ cores (ARMv6-M instruction set), Originally run at 133 MHz,[2] but later certified at 200 MHz[18]
- 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
- 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
- Dual ARM Cortex-M0+ cores (ARMv6-M instruction set), Originally run at 133 MHz,[2] but later certified at 200 MHz[18]
- 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
- 16 PWM channels
- 4-channel 12-bit 500-ksps SAR ADC, extra channel is connected to internal temperature sensor
For comparison with the RP2350, see RP2350 § Family comparison.
Boards
A number of manufacturers have announced their own boards using the RP2040. A selection of the growing number is here:
| Board name | Manufacturer | Size (mm) | Header pins | Debug connection | Number of pads | USB connector | Other connectors | Flash size | GPIO pins | ADC pins | Buttons | Other features | Image |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pico[19] | Raspberry Pi Ltd | 51×21 | 40+3 | via headers | 6 | micro-USB | 2 MB | 26 | 3 | BOOTSEL |  | ||
| Pico W[20] | Raspberry Pi Ltd | 51×21 | 40+3 | via headers | 6 | micro-USB | 2 MB | 26 | 3 | BOOTSEL | Wi-Fi, Bluetooth | .jpg) | |
| XIAO RP2040[21] | Seeed Studio | 20×17.5×3.5 | 14 | Reset Button/ Boot Button | USB Type-C interface | 2 MB | BOOTSEL + RESET | ||||||
| Nano RP2040 Connect[22] | Arduino | 45×18 | 30 | via pads | 5+4+2 | micro-USB | 16 MB | 1 | Wi-Fi, Bluetooth, 9-axis IMU, microphone | .jpg) | |||
| Tiny 2040[23] | Pimoroni | 22.9×18.2×6 | 8+3 | via headers | USB-C | 8 MB | 12 | 4 | BOOTSEL + RESET | ||||
| Keybow 2040[24] | Pimoroni | 76x76x30 | 0 (USB only) | USB-C | 2 MB | 16 keys | |||||||
| PicoSystem[25] | Pimoroni | 96.6×42.7×15.5 | 0 (self contained) | USB-C | 16 MB | 4 + joypad | Color 240×240 LCD, onboard battery | ||||||
| Feather RP2040[26] | Adafruit | 51×23×7 | 28 | via pins | USB-C | STEMMA QT, lipo battery | 8 MB | 21 | 4 | BOOTSEL + RESET | Battery charger | ||
| ItsyBitsy RP2040[27] | Adafruit | 36×18×4 | 33 | via headers | micro-USB | 4 MB | 23 | 4 | BOOTSEL + RESET | ||||
| Metro RP2040[28] | Adafruit | 71x53×13 | 32 | SWD + 3 pin JST SH compatible | USB Type-C | DC jack for 6-12VDC / STEMMA QT / SWD / pico probe | 16 MB | 24 | 4 | BOOTSEL + RESET | NeoPixel LED, Micro SD | ||
| QT Py RP2040[29] | Adafruit | 22×18×6 | 14 | Reset Button/ Boot Button | USB-C | STEMMA QT | 8 MB | 13 | 4 | BOOTSEL + RESET | 3.3vdc regulator, NeoPixel LED | ||
| Pro Micro – RP2040[30] | Sparkfun | 36×18 | 24 | 4+2 | USB-C | QWIIC | 16 MB | 20 | 4 | BOOTSEL + RESET | .jpg) | ||
| Thing Plus RP2040[31] | Sparkfun | 59×23 | 28 | JTAG pins | USB-C | QWIIC, lipo battery | 16 MB | 18 | 4 | BOOTSEL + RESET | Battery charger | .jpg) | |
| MicroMod RP2040[32] | Sparkfun | 22×22 | 0 | edge connector | edge connector | 16 MB | 29 | 3 | none | .jpg) | |||
| Müsli USB Pmod[33] | Lone Dynamics | 45×20.32 | 12 | SWD | USB Type-A female | 12-pin male PMOD, SWD | 256 KB | 8 | 0 | BOOTSEL | USB host, 5V boost converter | ||
| Werkzeug USB Multi-Tool[34] | Lone Dynamics | 50×50 | 32 | USB-C | 12-pin female PMOD, USB Type-A female | 1 MB | 24 | 4 | BOOTSEL | USB device/host, PMOD | |||
| RP2040[35] | WeAct Studio | 53x21.52 | 40+4 | via headers | USB-C | 2 MB, 4 MB, 8 MB, 16 MB |
26 | 4 | BOOTSEL + RESET | ||||
| RP2040-Zero[36] | Waveshare Electronics | 23×18 | 23 | USB-C | 10-pad connector | 2 MB | 29 | 4 | BOOTSEL + RESET | RGB LED (WS2812) | |||
| Pico2040 | zeankun.dev | 51x18 | 40+3 (2mm and 2.54mm variants are available) | SWD | 4 | micro-USB | 16 MB, 32 MB, 64 MB, 128 MB |
28 | 4 | BOOTSEL + RESET | |||
| Bus Pirate 5 | Where Labs, LLC | 60x37 | 10+9 | SWD | USB-C | 16MB | |||||||
| W5100S-EVB-Pico[37] | WIZnet Co., Ltd. | 75x21 | 40+3 | via headers | Micro-USB | RJ45 | 2 MB | 26 | 3 | BOOTSEL + RESET | Ethernet |  | |
| W5500-EVB-Pico[38] | WIZnet Co., Ltd. | 75x21 | 40+3 | via headers | Micro-USB | RJ45 | 2 MB | 26 | 3 | BOOTSEL + RESET | Ethernet |  | |
| W6100-EVB-Pico[39] | WIZnet Co., Ltd. | 75x21 | 40+3 | via headers | Micro-USB | RJ45 | 2 MB | 26 | 3 | BOOTSEL + RESET | Ethernet |  | |
| WizFi360-EVB-Pico[40] | WIZnet Co., Ltd. | 75×21 | 40+3 | via headers | Micro-USB | 2 MB | 26 | 3 | BOOTSEL + RESET | Wi-Fi |  | ||
| 0xCB-Helios[41] | 0xCB | 36×18 | 40+3 | via headers | USB-C | 16 MB | 29 | BOOTSEL + RESET | default off red power LED, blue user LED, level shifter to drive 5V components. ESD protection chip onboard | ||||
| Picopad[42] | Pájeníčko s.r.o. | 129x53 | 12 | via headers | micro-USB | microSD, external connector | 2 MB | 6 | BOOTSEL + RESET | on-off, Wi-Fi, micro SD card, external connector, IPS screen, speaker, battery | |||
| MUREX ANYESC[43] | MUREX Robotics | 78×35 | 3 | via headers | USB-C | edge connector | 8 MB | 3 | 0 | BOOTSEL + RESET | commercial ESC connector, 3 user LEDs | ||
| RP2040-PICO30[44] | OLIMEX Ltd | 51×21 | 40+3 | via headers | USB-C | Optional UEXT (pUEXT) | 2 MB | 30 | 4 | BOOTSEL + RESET | 3.3V 2A (3A peak) DCDC, All 30 GPIOs available to the user, Optional status LED | ||
| RP2040-PICO30-16[44] | OLIMEX Ltd | 51×21 | 40+3 | via headers | USB-C | Optional UEXT (pUEXT) | 16 MB | 30 | 4 | BOOTSEL + RESET | |||
| PicoUSB[45] | VoltMake[46] | 45×12x4 | 0 (USB only) | Dual sided USB-A | 2 MB | BOOTSEL + MODE | status LED |  |
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 (console) – a thumb-sized micro-console powered by the RP2040
