Home Articles The Rp2040 microcontroller

The Rp2040 microcontroller

by rp2040guy71

The RP2040 is the debut microcontroller from Raspberry Pi.

With a large on-chip memory, symmetric dual-core processor complex, deterministic bus fabric, and rich peripheral set
augmented with our unique Programmable I/O (PIO) subsystem, it provides professional users with unrivalled power
and flexibility.

With detailed documentation, a polished MicroPython port, and a UF2 bootloader in ROM, it has the
lowest possible barrier to entry for beginner and hobbyist users.

RP2040 is a stateless device, with support for cached execute-in-place from external QSPI memory. This design
decision allows you to choose the appropriate density of non-volatile storage for your application, and to benefit from
the low pricing of commodity Flash parts.

RP2040 is manufactured on a modern 40nm process node, delivering high performance, low dynamic power
consumption, and low leakage, with a variety of low-power modes to support extended-duration operation on battery

Key features:

• Dual ARM Cortex-M0+ @ 133MHz
• 264kB on-chip SRAM in six independent banks
• Support for up to 16MB of off-chip Flash memory via dedicated QSPI bus
• DMA controller
• Fully-connected AHB crossbar
• Interpolator and integer divider peripherals
• On-chip programmable LDO to generate core voltage
• 2 on-chip PLLs to generate USB and core clocks
• 30 GPIO pins, 4 of which can be used as analogue inputs
• Peripherals
2 SPI controllers
2 I2C controllers
16 PWM channels
USB 1.1 controller and PHY, with host and device support
8 PIO state machines

Whatever your microcontroller application, from machine learning to motor control, from agriculture to audio, RP2040
has the performance, feature set, and support to make your product fly.


RP2040 is a low-cost, high-performance microcontroller device with flexible digital interfaces.

Key features:

• Dual Cortex M0+ processor cores, up to 133 MHz
• 264 kB of embedded SRAM in 6 banks
• 30 multifunction GPIO
• 6 dedicated IO for SPI Flash (supporting XIP)
• Dedicated hardware for commonly used peripherals
• Programmable IO for extended peripheral support
• 4 channel ADC with internal temperature sensor, 0.5 MSa/s, 12-bit conversion
• USB 1.1 Host/Device

The Chip

RP2040 has a dual M0+ processor cores, DMA, internal memory and peripheral blocks connected via AHB/APB bus

Code may be executed directly from external memory through a dedicated SPI, DSPI or QSPI interface. A small cache improves performance for typical applications.
Debug is available via the SWD interface.
Internal SRAM can contain code or data. It is addressed as a single 264 kB region, but physically partitioned into 6
banks to allow simultaneous parallel access from different masters.
DMA bus masters are available to offload repetitive data transfer tasks from the processors.
GPIO pins can be driven directly, or from a variety of dedicated logic functions.
Dedicated hardware for fixed functions such as SPI, I2C, UART.
Flexible configurable PIO controllers can be used to provide a wide variety of IO functions.
A USB controller with embedded PHY can be used to provide FS/LS Host or Device connectivity under software control.
Four ADC inputs which are shared with GPIO pins.
Two PLLs to provide a fixed 48MHz clock for USB or ADC, and a flexible system clock up to 133MHz.
An internal Voltage Regulator to supply the core voltage so the end product only needs supply the IO voltage.

You may also like

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More