Custom digital protocols and precise timing
Programmable I/O state machines bit-bang protocols (WS2812, DVI, extra UARTs) without CPU load.
Engineering inference
Seeed Studio
Seeed Studio XIAO RP2040
Thumb-sized (21×17.8 mm) RP2040 board: dual Cortex-M0+ 133 MHz, 264 KB SRAM, 2 MB flash, 11 PWM GPIO (4 ADC), I2C/UART/SPI, PIO, RGB + user LEDs, reset/boot buttons, USB-C, castellated pads + SWD back pads; -40–85 °C.
102010428Development boardPrice$3.90Seeed Studio · unknown
Buy at Seeed Studio Board essentials
Facts about the complete product. Unknown values remain open design questions.
- Exposed GPIO
- 11
- Board I/O voltage
- 3.3 V
- Board flash capacity
- 2 MiB
- Board SRAM capacity
- 264 KiB
- Board operating range
- -40 to 85 °C
A good fit for
Guidance to help you shortlist. The basis is shown for each recommendation.
Custom 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 inferenceSpace-constrained and embedded builds
21.0 × 17.8 mm footprint.
Engineering inferenceLearning and fast prototyping
Programs from Arduino, PlatformIO, MicroPython.
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
53de3cd8-1067-5ef1-88fb-a71b42772553--mcu- Architecture
- Dual Arm Cortex-M0+
- Documented clock
- 133 MHz
- On-chip SRAM
- 264 KiB
flash memory
P25Q16SH (2 MB)
Puya
53de3cd8-1067-5ef1-88fb-a71b42772553--u3ldo regulator
LDO (DFN 1×1, part value not given)
unspecified
53de3cd8-1067-5ef1-88fb-a71b42772553--u4FAQ
Seeed Studio XIAO RP2040 questions
What microcontroller does the Seeed Studio XIAO RP2040 use?
The Seeed Studio XIAO RP2040 is built around the RP2040, alongside P25Q16SH (2 MB), LDO (DFN 1×1, part value not given).
How many GPIO pins does the Seeed Studio XIAO RP2040 have?
11 GPIO pins are exposed. Xirkit documents 20 board pins, 14 of them with pin-level electrical limits.
Are the Seeed Studio XIAO 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 Seeed Studio XIAO 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 Seeed Studio XIAO RP2040?
Supply range 5–5 V. Power inputs: 5V, VIN.
How much does the Seeed Studio XIAO RP2040 cost?
From $3.9 at Seeed Studio. Prices are observed unit prices before tax and shipping.
What are the Seeed Studio XIAO RP2040 dimensions?
21 × 17.8 × 1.6 mm. A STEP model is available for enclosure fit checks.
Which interfaces does the Seeed Studio XIAO RP2040 support?
gpio, pwm, adc, pio, spi, uart, other, usb, i2c, debug, control.
How do I program the Seeed Studio XIAO RP2040?
Supported frameworks: Arduino, PlatformIO, MicroPython, CircuitPython, TinyGo, Rust, Zephyr.
Where does this Seeed Studio XIAO 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
- Seeed Studio XIAO RP2040 datasheet — Seeed Studio
- Seeed Studio listing