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Seeed Studio XIAO RA4M1 - Smallest Development Board Based on 32-bit Renesas RA4M1, Arduino IDE-Ready, 19 GPIOs, RGB LED, CAN BUS, USB 2.0
The XIAO RA4M1 integrates Renesas' RA4M1 chip (32-bit ARM® Cortex®-M4 MCU up to 48 MHz with FPU) into the classic XIAO form factor. This development board offers 256KB Flash, 32KB SRAM, 8KB EEPROM, a USB 2.0 connector, reset and boot buttons, 3 LEDs, a 14-bit A/D converter, a 12-bit D/A converter, and a CAN BUS interface. With onboard charging circuitry and low-power modes (as low as 45μA), it’s ideal for battery-powered applications. Sharing the same 32-bit microcontroller as the Arduino Uno R4, it's natively compatible with Arduino IDE, making it the perfect starting point for electronics projects thanks to the extensive XIAO accessories.
User Manual / Datasheet / Example Codes Etc.
Features
- Popular Microcontroller Onboard: Powered by Renesas RA4M1, an 32-bit ARM® Cortex®-M4 R7FA4M1AB3CFM MCU operating at up to 48 MHz, 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.
Specifications
- Product: XIAO RA4M1
- Processor: Renesas RA4M1 48-MHz Arm® Cortex®-M4 Core
- RAM: 32 KB SRAM
- Flash: 256 KB
- LEDs: 1 User LED, 1 Power LED, 1 RGB LED
- Interfaces: 19 Pins:14x Analog,19x Digital, 2x IIC, 2x UART, 2x SPI
- Buttons: 1 RESET Button, 1 BOOT Button
- Security: AES128/256
- Low Power: 45μA
- Software Compatibility: Arduino IDE
- Working Temperature: -20°C-70°C
- Dimensions: 21x17.8 mm
- Power: Type-C: 5V BAT: 3.8V
Applications
- Smart Control
- Education
- Robotics
- Wearables
Package Includes
- 1x Seeed Studio XIAO RA4M1
- 2x 7 Pin Header
Hardware Overview


Warranty Terms :
Branded products (Waveshare/ Raspberry Pi/ Radxa/ DWIN etc) are as per brand warranty terms. Generic products are eligible for replacement within 7 days of delivery based on following conditions.
Products are eligible for a replacement if there is physical damage during transit or a clear manufacturing defect. Any claim for damage/ wrong items/ replacement must be made within 48 hours of successful delivery of the product. Requests for refund of amount or exchange of product(s) will be reviewed on a case by case basis and HUBTRONICS carries final rights to take a final decision on refund, store credit or exchange.
What to take care of ?
Most of our products are technical in nature and require trained personnel to handle them. Any kind of mishandling can result in damage or malfunctioning of the product, it is not possible for us to provide a replacement or refund if the product is damaged due to technical or physical mishandling.
Who pays the return shipping cost?
Free of cost return pickup from delivery address is eligible for products categorized as manufacturing defect/ Damage in transit/ Wrong items delivered. We do not support return pickup for any B2B order or offline orders not placed on website. Buyer need to arrange return shipping for B2B orders.
What voids warranty?
Please note that replacement/ return or refund is not possible if the product is not compatible with your system/application. Please check all the technical details/ dimensions etc. before ordering and contact us for any kind of clarifications.
If product is soldered/ programmed at any point or physically altered in any way, it is not eligible for return/ replacement. If the item requires soldering for testing, please ensure that you use suitable clips or jig to test it without soldering. Any kind of soldering job makes the product ineligible for return or replacement.
Following items are not eligible for return under any circumstances
- Device Programmers / Dongles
- Soldering Consumables (Wire, Flux etc)




