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Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc

Seeeduino XIAO - Smallest Arduino-Compatible Microcontroller Based on SAMD21 With Rich Interfaces, Designed for Projects Needing Arduino Micro, 1pc

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?

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?

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?

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?

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.

Product ID: 525876429

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Details

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

⚡48MHz ARM Cortex-M0+ CPU

📏Tiny 20x17.5mm footprint

🔌USB Type-C power & programming

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Seeed Studio XIAO RP2040 Microcontroller, with Dual-Core ARM Cortex M0+ Processor, Supports Arduino, MicroPython and CircuitPython with Rich Interfaces.

Description

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

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.

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.

Specifications

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

Have a Question? See What Others Asked

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?

Does this come with a bootloader or not?

Is the IO 5V tolerant?

The board can be connected to 5V power supply and simultaneously been conectes to the usb conector from my computer?

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