The Seeed Studio XIAO RA4M1 is a compact, high-performance development board designed for space-constrained applications. Measuring just 21 x 17.8 mm, it integrates the Renesas RA4M1 microcontroller, featuring a 32-bit ARM Cortex-M4 core operating at up to 48 MHz, with 256 KB of flash memory and 32 KB of SRAM. Feature 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. Specification Product XIAO RA4M1 Processor Renesas RA4M1 48-MHz Arm Cortex-M4 Core with FPU RAM 32 KB SRAM Flash 256 KB LEDs 1 User LED, 1 Power LED, 1 RGB LED Interfaces 19 IOs: 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 Hardware Overview Application Smart Control Education Robotics Wearables HSCODE 8543709990 USHSCODE 8471500150 UPC EUHSCODE 8543709099 COO CHINA Part List Seeed Studio XIAO RA4M1 x1 7 Pin Header x2