The Seeed Studio XIAO Series is a collection of thumb-sized, powerful microcontroller units (MCUs) tailor-made for space-conscious projects requiring high performance and wireless connectivity. Embodying the essence of popular hardware platforms such as ESP32, RP2040, nRF52840, and SAMD21, the Arduino-compatible XIAO series is the perfect toolset for you to embrace tiny machine learning (TinyML) on the Edge.
XIAO is a combination of compactness, capability, and user-friendly design. The whole XIAO Series features compact design with all SMD components placed on the same side of the board, so designers can easily integrate XIAO into their boards for rapid mass production.
| Seeed Studio XIAO SAMD21 | Seeed Studio XIAO RP2040 | Seeed Studio XIAO nRF52840 | Seeed Studio XIAO nRF52840 Sense |
|---|---|---|---|
 |
 |
 |
 |
| XIAO SAMD21 is an ultra-small, high-performance universal development board. | XIAO RP2040 is an ultra-small, high-performance universal development board. Features onboard 2MB flash, MicroPython support. | XIAO nRF52840 features ultra-low power BLE, suitable for wireless wearable device. | XIAO nRF52840 Sense features an onboard microphone and 3-axis IMU, suitable for the TinyML AI+IOT project. |
| 🖱️ Buy Now 📚 Getting Started |
🖱️ Buy Now 📚 Getting Started |
🖱️ Buy Now 📚 Getting Started |
🖱️ Buy Now 📚 Getting Started |
| Seeed Studio XIAO ESP32C3 | Seeed Studio XIAO ESP32C6 | Seeed Studio XIAO ESP32S3 | Seeed Studio XIAO ESP32S3 Sense |
 |
 |
 |
 |
| XIAO ESP32C3 is a low-cost, high-performance RISC-V IOT development board that supports Bluetooth&WIFI and low-power mode. | Excels in Matter-compliant smart home applications | Small yet extraordinary, a new Benchmark in IoT Application | Ultra-small ESP32-S3 development board with OV2640 camera, a risging star in the fields of TinyML and Smart Home |
| 🖱️ Buy Now 📚 Getting Started |
🖱️ Buy Now 📚 Getting Started |
🖱️ Buy Now 📚 Getting Started |
🖱️ Buy Now 📚 Getting Started |
| Seeed Studio XIAO SAMD21 | Seeed Studio XIAO RP2040 | Seeed Studio XIAO nRF52840 | Seeed Studio XIAO nRF52840 Sense | Seeed Studio XIAO ESP32C3 | Seeed Studio XIAO ESP32C6 | Seeed Studio XIAO ESP32S3 | Seeed Studio XIAO ESP32S3 Sense | |
|---|---|---|---|---|---|---|---|---|
| SKU | 102010328 | 102010428 | 102010448 | 102010469 | 113991054 | 113991254 | 113991114 | 113991115 |
| Chip | Microchip SAMD21 | Raspberry Pi RP2040 | Nordic nRF52840 | Nordic nRF52840 | Expressif ESP32C3 | Expressif ESP32C6 | Expressif ESP32S3 | Expressif ESP32S3 |
| Architecture | Cortex-M0+ running up to 48MHz |
Dual-core Cortex-M0+ running up to 133 MHz |
Cortex-M4 running up to 64 MHz |
Cortex-M4 running up to 64 MHz |
RISC-V running up to 160 MHz |
Dual RISC-V with the HP one running up to 160MHz |
Dual-core Xtensa LX7 running up to 240 MHz |
Dual-core Xtensa LX7 running up to 240 MHz |
| RAM | 32 KB SRAM | 264 KB SRAM | 256 KB RAM | 256 KB RAM | 400 KB SRAM | 512 KB SRAM | 512 KB SRAM 8MB PSRAM |
512 KB SRAM 8MB PSRAM |
| Flash & ROM (chip) | 256KB | ❌ | 1MB | 1MB | 4MB | 4MB | 384KB | 384KB |
| Flash (onboard) | ❌ | 2MB | 2MB | 2MB | ❌ | ❌ | 8MB | 8MB |
| Built-in Sensors | ❌ | ❌ | ❌ | IMU, Microphone | ❌ | ❌ | ❌ | OV2640 camera, Microphone |
| Digital / Analog Pins | 11/11 | 11/4 | 11/6 | 11/6 | 11/4 | 11/6 | 11/9 | 13/11 |
| I2C/UART/SPI | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Buletooth | ❌ | ❌ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| WiFi | ❌ | ❌ | ❌ | ❌ | ✅ | ✅ | ✅ | ✅ |
| Zigbee | ❌ | ❌ | ❌ | ❌ | ❌ | ✅ | ❌ | ❌ |
| Thread | ❌ | ❌ | ❌ | ❌ | ❌ | ✅ | ❌ | ❌ |
| Matter | ❌ | ❌ | ❌ | ❌ | ✅ | ✅ | ✅ | ✅ |
| Reset Button | ❌ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Boot Button | ❌ | ✅ | ❌ | ❌ | ✅ | ✅ | ✅ | ✅ |
| User LED | ✅ | ✅ | ✅ | ✅ | ❌ | ✅ | ✅ | ✅ |
| Baterry Charge LED and Chip | ❌ | ❌ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Low Power Mode | ❌ | ❌ | 5μA | 5μA | 44μA | 15μA | 14μA | 26.5mA |
| Programming Langusges | ||||||||
| Arduino | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| CircuitPython | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ |
| MicroPython | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ✅ | ✅ |
XIAO SoM User Manual opensource hardware & software resources of XIAO, providing professional product design guidelines to help you accelerate your ideas off the ground. This User Manual can provide everything needed from module selection to the final manufacturing.
This course guides you through a series of practical exercises and project-based activities. By using Seeed Studio XIAO series products, you will embark on a step-by-step journey to master Arduino, starting from the basics of LED lighting and progressing towards more advanced projects such as Arduino wearables and miniaturized device. In addition, you will learn how to quickly create a usable electronic product prototype from the course.
-
[PDF] ATSAMD218A-MU datasheet
-
[PDF] RP2040 datasheet
-
[PDF] nRF52840 datasheet
-
[PDF] nRF52840 datasheet
-
[PDF] ESP32C3 datasheet
-
[DXF] Seeed Studio XIAO ESP32S3 Sense Dimension in DXF (top)
-
[DXF] Seeed Studio XIAO ESP32S3 Sense Dimension in DXF (bottom)
