Feature
Specification
Hardware Overview
Application
Documents
Certification
Certification
Part List
Feature
- The First STM32-Powered XIAO: Built with the STM32C5A3CG, featuring a 144MHz Arm Cortex-M33 processor, floating-point support, and DSP instructions for embedded control and sensor processing.
- CAN FD Connectivity Built-In: Two native CAN FD interfaces, with one channel connected to an onboard TCAN3403-Q1 transceiver and accessible CANH/CANL pads. Add an external transceiver to use the second channel.
- 6-Axis IMU with Programmable Heating: The onboard LSM6DS3TR-C accelerometer and gyroscope are paired with dedicated heating resistors around the sensor. GPIO-controlled heating enables programmable warm-up and, with temperature-feedback firmware, closed-loop temperature regulation to help reduce temperature-related drift in robotics and motion-sensing applications.
- 16MB External Flash: Store application data, sensor logs, configuration files, and CAN message records using application firmware.
- External Crystal for Communication Timing: An onboard high-speed external crystal provides a clock reference for CAN FD and other timing-sensitive applications.
- USB-C and Battery Charging: Develop over USB-C or build battery-powered devices using the onboard lithium-battery charging circuit and battery connection pads.
- Compact, Integration-Friendly Design: The XIAO form factor and castellated edge pads support breadboard prototyping with headers and integration into custom carrier boards.
Specification
| Item | Specification |
|---|---|
| Product Versions | |
| Product | XIAO STM32C5 XIAO STM32C5 (Pre-Soldered) |
| Processor & Memory | |
| Microcontroller | STMicroelectronics STM32C5A3CG |
| CPU | Single-core Arm Cortex-M33, up to 144 MHz, with FPU and DSP instructions |
| Internal program Flash | 1 MB |
| SRAM | 256 KB |
| External Flash | 16 MB |
| External clock | Onboard 48 MHz HSE crystal with ±10 ppm initial frequency tolerance |
| CAN FD Connectivity | |
| CAN Interface | 2 native FDCAN interfaces |
| Onboard CAN transceiver | 1 × TI TCAN3403-Q1 |
| Onboard CAN bus connection | CANH/CANL pads; use board GND as the signal reference |
| Second CAN channel | Digital TX/RX signals External CAN transceiver required |
| CAN termination | 120 Ω, enabled by default Disconnectable through a cuttable solder link |
| IMU & Temperature Control | |
| IMU | STMicroelectronics LSM6DS3TR-C, 3-axis accelerometer and 3-axis gyroscope |
| IMU heating | Dedicated heating resistors around the IMU with GPIO-controlled drive |
| Temperature regulation | Programmable warm-up Closed-loop setpoint regulation requires temperature feedback and suitable application firmware |
| Interfaces & Power | |
| USB | USB-C USB 2.0 Full Speed, 12 Mbps signaling rate |
| Logic level | 3.3 V |
| Power | USB-C 5 V input Lithium battery through BAT pads |
| Battery charging | Onboard charging circuit |
| Debug interface | SWD |
| Controls & Form Factor | |
| User button | Reset button Boot button |
| Indicators | User LED Charging LED |
| Form factor | Compact XIAO module with castellated edge pads |
Hardware Overview
Attention
All the I/O pins are 3.3V, please do not input more than 3.3V, otherwise, the CPU may be damaged.
TOP
BOTTOM
PINOUT
Application
- USB-to-CAN FD Development: Build a compact interface for CAN device testing, message exchange, and host-based analysis with suitable firmware and software.
- CAN Sensor Nodes: Send motion measurements and data from external sensors over a wired CAN network.
- Robot and Motion Controllers: Communicate with external CAN-enabled motor drives for robotics and motion-control prototypes.
- Motion-Sensing and Stabilization Development: Explore IMU preheating and temperature regulation for robot startup routines, stabilization systems, and sensor-fusion experiments.
- Embedded Data Logging: Record selected CAN traffic, IMU measurements, and application events in external Flash.
- Portable Development Tools: Create battery-powered monitoring devices, test fixtures, and compact diagnostic prototypes.
Documents
- BQ25101 Datasheet
- ST LSM6DS3TR Datasheet
- mic-MSM261D3526H1CPM
- Nano BLE MCU-nRF52840 PS v1.1
- Bottom-pad-positioning
- Flash_P25Q16H-UXH-IR_Datasheet
- Seeed Studio XIAO nRF52840 BLE Communication Distance Test Report
- Seeed Studio XIAO nRF52840 CE | FCC | MIC
- TinyML Case Studies
- XIAO Reference Design
- 3D Printing "Case" Studies
- PCN-XIAO Series Packaging Upgrade.pdf
Certification
| HSCODE | 8517180050 |
| USHSCODE | 8517180050 |
| UPC | 841454123507 |
| EUHSCODE | 8543709099 |
| COO | CHINA |
Part List
Seeed Studio XIAO nRF52840 Sense - nRF52840 | x1 |
7 Pin Header | x2 |
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Seeed Studio XIAO nRF52840 Sense (XIAO BLE Sense)
SKU 102010469
Seeed Studio XIAO nRF52840 Sense by Nordic is carrying Bluetooth Low Energy 5.4 wireless capability and is able to operate with low power consumption. Featuring onboard IMU and PDM, it can be your best tool for embedded Machine Learning projects.
XIAO Dev Board
Pin Header
Package
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