Wio Terminal: ATSAMD51 Core

Compatible with Arduino and MicroPython, Wio Terminal is an ATSAMD51-based microcontroller with Bluetooth and Wi-Fi connectivity powered by Realtek RTL8720DN. More than just a single embedded functional module, Wio Terminal itself includes a 2.4” LCD Screen, onboard IMU(LIS3DHTR), microphone, buzzer, microSD card slot, light sensor, infrared emitter(IR 940nm). These practical add-ons are carefully housed in a compact enclosure, making it an efficient and product-ready product. Equipped with Raspberry Pi 40-pin GPIO, it is also compatible with a Raspberry Pi as a slave device.




The Wio (Wireless Input and Output) platform (Wio LinkWio Nodes) was first introduced to the world at the end of 2015 by Seeed Studio. 

Today a new Wio member is joining the family – Wio Terminal. Instead of being a single embedded functional module, Wio Terminal is more of a complete system equipped with Screen + Development Board + Input/Output Interface + Enclosure, making it an efficient and Product-Ready Product.

With Wio Terminal, you can: 

  • Sense and tag the Real-World data with over 300 Groves created by Seeed
  • Use 100% open-source Hardware in a pythonic way
  • Build your program interpreter starting from 90% with LCD screen and compact enclosure

Compatible with Arduino and Micropython, Wio Terminal is an ATSAMD51-based microcontroller with wireless connectivity supported by Realtek RTL8720DN. Its CPU speed runs at 120MHz (Boost up to 200MHz). Realtek RTL8720DN chip supports both Bluetooth and Wi-Fi, providing the backbone for IoT projects. The Wio Terminal itself includes a 2.4″ LCD Screen, onboard IMU(LIS3DHTR), microphone, buzzer, microSD card slot, light sensor, and infrared emitter(IR 940nm). On top of that, it also has two multifunctional Grove ports for Grove Ecosystem and Raspberry pi 40-pin compatible GPIO for more add-ons.

  • Wio Terminal + Grove = IoT System
  • Wio Terminal + Raspberry Pi = Edge Computing System
  • Wio Terminal + Customized add-ons = Handheld devices or endless possibilities!


Highlight Features


Highly Integrated Design
  • MCU, LCD, WIFI, BT, IMU, Microphone, Buzzer, microSD Card, Configurable Buttons, Light Sensor, 5-Way Switch, Infrared Emitter (IR 940nm), Crypto-authentication Ready
  • Well-designed enclosure with built-in magnets and two mounting holes, allowing you to set up your IoT project without hassle



Powerful MCU – Microchip ATSAMD51P19
  • ARM Cortex-M4F core running at 120MHz (Boost up to 200MHz)
  • 4 MB External Flash, 192 KB RAM
  • Comprehensive Protocol Support
  • SPI, I2C, I2S, ADC, DAC, PWM, UART(Serial)
Reliable Wireless Connectivity
  • Powered by Realtek RTL8720DN
  • Dual Band 2.4Ghz / 5Ghz Wi-Fi (802.11 a/b/g/n)
  • BLE / BLE 5.0


USB OTG Support
  • Accessible Devices(as USB-Host): read data or signals from a mouse, keyboard, MIDI devices, Xbox/PS gaming controllers, 3D printers
  • Simulated Devices(as USB-Client): emulate a mouse, keyboard, or MIDI devices to Host PC
  • When using the USB Host/Client function, you can use the 40-pin on the back of Wio Terminal for power supply.


Grove Ecosystem
  • 300+ Grove modules to explore with IoT
  • Two onboard multifunctional Grove ports can use for Digital, Analog, I2C, and PWM
  • Note: To connect Grove with Wio Terminal, please use unbuckled grove cable.


Raspberry Pi 40-pin Compatible
  • Can be mounted to a Raspberry Pi as a slave device
  • Raspberry Pi’s HAT can use with an adapter cable


Software Support
  • Arduino
  • MicroPython
  • ArduPy
  • AT Firmware
  • Visual Studio Code
  • CircuitPython


  • Python Terminal Device
  • Data Collection Device for Machine Learning
  • Hand-held Device
  • Retro Gaming Device
  • IoT Controller
  • Education
  • Prototyping
  • Slave devise / Accessories for Raspberry Pi


Pinout Diagram

Hardware Overview



Technical Specifications
Manufacturer Part Number ATSAMD51P19
Core Processor ARM® Cortex®-M4F
Maximum Speed 200MHz
External Flash 4MBytes
Operating Temperature -40°C ~ 85°C (TA)
Resolution 320×240
Display Size 2.4inch
Drive IC ILI9341
Manufacturer Part Number RTL8720DN
KM4 CPU ARM® Cortex®-M4F @ 200MHz
KM0 CPU ARM® Cortex®-M0
Wi-Fi 802.11 a/b/g/n 1×1, 2.4GHz & 5GHz
Bluetooth Support BLE5.0
Accelerometer LIS3DHTR
Microphone 1.0V-10V -42dB
Speaker ≥78dB @10cm 4000Hz
Light Sensor 400-1050nm
Infrared Emitter 940nm
MicroSD Card Slot Maximum 16GB
GPIO 40-PIN (Raspberry Pi Compatible)
Grove 2 (Multifunction)
FPC 20-Pins
USB Type-C Power & USB-OTG
5-Way Switch
Power/Reset Switch
User-defined button *3
Dimension 72mm*57mm*12mm
Materials ABS+PC


Part List
  • Wio Terminal
  • USB Type-C Short Cable
  • User Manual


HSCODE 8543709990
USHSCODE 8471410150
CE 1


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