Arduino UNO XIAO RA4M1 - Smallest Dev Borad Based on 32-bit Renesas RA4M1, Arduino IDE-Ready, 19 GPIOs, RGB LED, CAN BUS,USB 2.0
SPECIFICATIONS
Accessory Type: Sensor
Battery Included: No
Brand Name: seeed studio
Buttons: 1 RESET Button 1 BOOT Button
Compatible With: Arduino IDE-Ready
Dimensions: 21x17.5 mm
Flash: 256 KB
High-concerned chemical: None
Interfaces: 9 Pins: 14x Analog19x Digital 2x IIC 2x UART 2x SPI
LEDs: 1 User LED 1 Power LED 1 RGB LED
Low Power: 45μA
Origin: Mainland China
Processor: Renesas RA4M1 48-MHz Arm Cortex -M4 Core with FPU
RAM: 32 KB SRAM
Security: AES128/256
Software Compatibility: Arduino IDE
Working Temperature: -20°C-70°C
🌱 Popular Microcontroller Onboard:
Powered by Renesas RA4M1, an 32-bit ARM® Cortex®-M4 R7FA4M1AB3CFM MCU operating at up to 48 MHz with FPU, 256 KB of Flash memory, and 32 KB of SRAM.
🌱 Highlighted Onboard Resources:
Equipped with a 14-bit ADC, 12-bit DAC, CAN BUS, USB 2.0, and an onboard RGB LED.
🌱 Expanded 8 New IOs:
Adds 8 new IO pins on the back compared to previous XIAO boards (19 GPIOs in total), enabling more complex applications.
🌱 Powerful Security Features:
Built-in hardware encryption, secure boot, key storage, and other functions to ensure application security.
🌱 Software Compatibility:
Fully compatible with Arduino IDE for seamless project development and prototyping.
🌱 Efficient Power Design:
Offers 4 operating modes with power consumption as low as 45μA in deep sleep, and supports lithium battery charge management.
🌱 Compact Thumb-Sized Design:
Measuring 21 x 17.8mm, adopting Seeed Studio's classic XIAO form factor, ideal for space-conscious applications.
🌱 Production-Friendly:
Surface Mount Device (SMD) design with all components on the front and stamp holes on both sides, facilitating efficient mass production.
Being the 10th member of the Seeed Studio XIAO family, the XIAO RA4M1 remains the classic XIAO design (thumb-size, SMD, stamp holes). All these features make it a perfect fit for either space-limited projects such as wearables, or a production-ready module for your PCBA designs. (check out our Fusion Co-Create one-stop prototyping, producing and promoting services to explore how to scale up your XIAO-based designs).
Hardware Overview

Application
Smart Control
Education
Robotics
Wearables
Part List
Seeed Studio XIAO RA4M1
x17 Pin Header
x2
