---
product_id: 525876429
title: "Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc"
brand: "seeed studio"
price: "145 Lei"
currency: RON
in_stock: true
url: https://www.desertcart.ro/products/525876429-seeeduino-xiao-smallest-arduino-compatible-microcontroller-based-on-samd21-rich
store_origin: RO
region: Romania
---

# 48MHz ARM Cortex-M0+ CPU Tiny 20x17.5mm footprint USB Type-C power & programming Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc

**Brand:** seeed studio
**Price:** 145 Lei
**Availability:** ✅ In Stock

## Summary

> 🤏 Tiny Tech, Massive Impact – Power Your Next Big Idea!

## Quick Answers

- **What is this?** Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc by seeed studio
- **How much does it cost?** 145 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/525876429-seeeduino-xiao-smallest-arduino-compatible-microcontroller-based-on-samd21-rich)

## Best For

- seeed studio enthusiasts

## Why This Product

- Trusted seeed studio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Mighty:** Smallest Seeeduino board at just 20x17.5mm, ideal for discreet, power-efficient wearable and IoT projects.
- • **Pin-packed Versatility:** 14 GPIO pins supporting analog, digital, I2C, UART, and SPI interfaces for limitless project possibilities.
- • **Future-ready USB Type-C:** Modern USB-C interface for fast code uploads and power delivery, perfect for sleek, wearable designs.
- • **Powerhouse in Your Palm:** ARM Cortex-M0+ 32-bit CPU running at 48MHz, delivering 3x the speed of classic Arduino Uno.
- • **Plug & Play with Arduino IDE:** Seamless compatibility with Arduino IDE and standard 2.54mm breadboard pitch for rapid prototyping.

## Overview

The Seeeduino XIAO is the smallest Arduino-compatible microcontroller board featuring a 48MHz ARM Cortex-M0+ CPU, 256KB flash memory, and 32KB SRAM. With 14 multifunctional GPIO pins and USB Type-C support, it’s designed for compact, low-power projects including wearables and IoT devices, all fully compatible with the Arduino IDE for effortless development.

## Description

Take a look at Seeeduino XIAO. What a small size and cute looking! It is the smallest member of the Seeeduino family. Seeeduino XIAO still carries the powerful CPU-ARM Cortex-M0+(SAMD21G18) which is a low-power Arduino microcontroller.

## Features

- [ Powerful CPU] Seeeduino XIAO carries powerful CPU ARM Cortex-M0+ 32bit 48MHz microcontroller (SAMD21G18), which is three times than Arduino Uno and Arduino Nano. In addition, this Arduino IDE compatible board Xiao is also equipped with 256KB flash memory and 32KB SRAM.
- [Rich Interfaces in a Tiny Size] There is 14 GPIO PINs, which can be used for 11 analog PINs, 11 digital PINs, 1 I2C interface, 1 UART interface, and 1 SPI interface in such a tiny size - only 20mm*17.5mm ( as small as your thumb). Seeeduino XIAO development board is the smallest Arduino compatible board in the Seeeduino series.
- [Fully compatible with Arduino IDE] The Seeeduino XIAO development board is perfectly compatible with Arduino IDE, you can easily develop some small projects with the help of the large and comprehensive Arduino library. As it has a 2.54mm pin pitch, it is an Arduino microcontroller that can be used even when inserted into a breadboard.
- [USB Type C Support] Seeeduino XIAO supports the USB Type-C interface which can supply power and download code. There are power pads at the back of the XIAO which support battery and make it designed for wearable devices to become realistic.
- [Perfect for Wearable and Tiny Arduino Projects] On the other hand, this little board has good performance in processing but needs less power. As a matter of fact, it is designed in a tiny size and can be used for Arduino wearable devices and small projects.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | seeed studio |
| Manufacturer | seeed studio |
| Model | 102010328 |
| Model Name | Seeeduino XIAO |
| Product Dimensions | 2.1 x 1.75 x 2.1 cm; 32 g |
| Item model number | 102010328 |
| Memory Storage Capacity | 256 KB |
| Ram Memory Technology | LPDDR3 |
| Operating System | Windows, Linux, macOS |
| Processor Brand | ARM |
| Processor Speed | 48 MHz |
| Processor Count | 1 |
| Hardware Interface | USB |
| Compatible Devices | Arduino Microcontrollers, USB Type-C Compatible Devices |
| Batteries Required | No |
| Wireless Type | Bluetooth |
| Total USB ports | 1 |
| Connector Type | USB |
| Manufacturer | seeed studio |
| Country of Origin | China |
| Item Weight | 32 g |

## Product Details

- **Brand:** seeed studio
- **Model Name:** Seeeduino XIAO
- **Memory Storage Capacity:** 256 KB
- **CPU Speed:** 48 MHz
- **Connectivity Technology:** USB

## Images

![Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc - Image 1](https://m.media-amazon.com/images/I/61diwnhMI0L.jpg)
![Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc - Image 2](https://m.media-amazon.com/images/I/51CWrnSiNsL.jpg)
![Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc - Image 3](https://m.media-amazon.com/images/I/61KWOdKfY-L.jpg)
![Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc - Image 4](https://m.media-amazon.com/images/I/71d1FPQr9nL.jpg)
![Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc - Image 5](https://m.media-amazon.com/images/I/61Bfla0vluL.jpg)

## Questions & Answers

**Q: Can i attach voltage in to the 5v pin? i'm trying to put this on a pcb. will it have the same voltage regulation?**
A: As a previous contributor wrote: a lot of people answering questions here do not know what they are talking about! So here is the answer copied straight from the Seeed Studio webpage regarding this board:
"Note
For general I/O pins: Working voltage of MCU is 3.3V . Voltage input connected to general I/O pins may cause chip damage if it' higher than 3.3V .
For power supply pins: The built-in DC-DC converter circuit able to change 5V voltage into 3.3V allows to power the device with a 5V supply via VIN-PIN and 5V-PIN.
Please pay attention to use, do not lift the shield cover."

**Q: Does this come with a bootloader or not?**
A: yes - I'm pretty sure it does.  Its been a while since I played with it.  But I seem to recall all was needed was to download the necessary Arduino files into the Arduino programming system and make the correct connection to the device.   However be aware the device is finicky in that it needs to be rebooted for programming mode using a jumper wire.  So if you're doing a lot of development/debugging, do that work in a standard Arduino first, and then translate your  debugged program to this device.

**Q: Is the IO 5V tolerant?**
A: From the testing I have done on mine, the pins when being used as an input, are 3.3v tolerant.

**Q: The board can be connected to 5V power supply and simultaneously been conectes to the usb conector from my computer?**
A: There would be a problem if the 5V supply was actually a lower voltage than the USB (which should be 5V). A diode protects everything if the external 5V supply was above 5V (up to the 6V limit of the voltage regulator on the board). To be safe, a diode should be added in series with the external 5V supply. This protection is present in genuine Arduino boards' VIN pin.

## Frequently Bought Together

- Seeed Studio XIAO SAMD21The Smallest Arduino Microcontroller Based on SAMD21,with Rich Interfaces, 100% Arduino IDE Compatible, desiged for Projects Need Arduino Micro, 1pc
- Seeed Studio XIAO ESP32C3 - Tiny MCU Board with Wi-Fi and BLE for IoT Controlling Scenarios. Microcontroller with Battery Charge, Power Efficient, and Rich Interface for Tiny Machine Learning. …
- Seeed Studio XIAO RP2040 Microcontroller, with Dual-Core ARM Cortex M0+ Processor, Supports Arduino, MicroPython and CircuitPython with Rich Interfaces.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ro/products/525876429-seeeduino-xiao-smallest-arduino-compatible-microcontroller-based-on-samd21-rich](https://www.desertcart.ro/products/525876429-seeeduino-xiao-smallest-arduino-compatible-microcontroller-based-on-samd21-rich)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-04*