Battery-powered and portable builds
On-board LiPo charger (Microchip MCP73831) — run from a cell and charge over USB.
Engineering inference
Adafruit Industries
Adafruit Feather RP2040
Adafruit Feather RP2040: dual Cortex-M0+ ~125 MHz, 264 KB RAM, 8 MB QSPI flash, 21 GPIO (4 ADC) at 3.3 V, USB-C, MCP73831 LiPo charger + JST, NeoPixel, STEMMA QT, 50.8×22.8 mm.
4884Revision rev DDevelopment boardPrice$11.95Adafruit · in stock
Buy at Adafruit Board essentials
Facts about the complete product. Unknown values remain open design questions.
- Exposed GPIO
- 21
- Board I/O voltage
- 3.3 V
- Board flash capacity
- 8 MiB
- Board SRAM capacity
- 264 KiB
A good fit for
Guidance to help you shortlist. The basis is shown for each recommendation.
Custom digital protocols and precise timing
Programmable I/O state machines bit-bang protocols (WS2812, DVI, extra UARTs) without CPU load.
Engineering inferenceCustom USB devices (HID, MIDI, serial)
USB is on the main chip (RP2040), so the board can enumerate as a keyboard, MIDI device or CDC serial port.
Engineering inferenceLearning and fast prototyping
Programs from CircuitPython, MicroPython, Arduino.
Engineering inferenceInside this board
The board is the parent product. Each chip has its own memory, pins, capabilities and thermal limits.
main processor
RP2040
Raspberry Pi Ltd
802ebae8-7009-5d4f-9539-f06c5316b7b5--mcu- Architecture
- Dual Arm Cortex-M0+
- Documented clock
- 133 MHz
- On-chip SRAM
- 264 KiB
flash memory
W25Q64JVSSIQ
Winbond
802ebae8-7009-5d4f-9539-f06c5316b7b5--flashbattery charger
MCP73831
Microchip
802ebae8-7009-5d4f-9539-f06c5316b7b5--chargerrgb led
WS2812B
Worldsemi
802ebae8-7009-5d4f-9539-f06c5316b7b5--neopixelFAQ
Adafruit Feather RP2040 questions
What microcontroller does the Adafruit Feather RP2040 use?
The Adafruit Feather RP2040 is built around the RP2040, alongside W25Q64JVSSIQ, MCP73831, WS2812B.
How many GPIO pins does the Adafruit Feather RP2040 have?
21 GPIO pins are exposed. Xirkit documents 30 board pins, 24 of them with pin-level electrical limits.
Are the Adafruit Feather RP2040 I/O pins 5 V tolerant?
No. The I/O pins are not 5 V tolerant — they run at 3.3 V logic; use a level shifter for 5 V signals. Input-high threshold: 2–3.6 V.
How much current can a Adafruit Feather RP2040 GPIO pin source?
Documented output-high current per pin: ≤ 12 mA. Values are traced to the chip datasheet; see the pinout table for per-pin limits and conditions.
What voltage powers the Adafruit Feather RP2040?
Supply range 3.7–5 V. Power inputs: BAT (?–4.2 V), USB.
How much does the Adafruit Feather RP2040 cost?
From $11.95 at Adafruit. Prices are observed unit prices before tax and shipping.
What are the Adafruit Feather RP2040 dimensions?
50.8 × 22.86 mm. A STEP model is available for enclosure fit checks.
Which interfaces does the Adafruit Feather RP2040 support?
spi, uart, other, pwm, gpio, pio, usb, adc, i2c, clock, led.
How do I program the Adafruit Feather RP2040?
Supported frameworks: CircuitPython, MicroPython, Arduino.
Where does this Adafruit Feather RP2040 data come from?
Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.
Data & sources
Where these values come from
- Adafruit Feather RP2040 datasheet — Adafruit Industries
- Adafruit listing