RP2040

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.[1]

Overview

Announced on 21 January 2021, the RP2040 is the first microcontroller designed by Raspberry Pi Ltd.[2][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,[2][8] PicoRuby,[9] Ada,[10] TypeScript[11] and Zig.[12] It is powerful enough to run TensorFlow Lite.[2]

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 × 7 mm QFN-56EP surface-mount device (SMD) package manufactured by TSMC using its 40 nm process.[16] For comparison with the RP2350, see.

• Key features:[17]
• Dual ARM Cortex-M0+ cores (ARMv6-M instruction set), Originally run at 133 MHz,[1] 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
• Peripherals:
• One USB 1.1 (LS & FS) controller and PHY, host and device support, 1.5 Mbit/s (Low Speed) and 12 Mbit/s (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

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 (console) – a thumb-sized micro-console powered by the RP2040

External links

• Official webpage
• Official documentation