The Arduino UNO R4 WiFi merges the RA4M1 microprocessor from Renesas with the ESP32-S3 from Espressif, creating an all-in-one tool for makers with enhanced processing power and a diverse array of new peripherals. With its built-in Wi-Fi® and Bluetooth® capabilities, the UNO R4 WiFi enables makers to venture into boundless creative possibilities. Furthermore, this versatile board boasts a convenient on-board 12x8 LED matrix and a Qwiic connector, offering ample space for innovation and unleashing creativity. This dynamic combination empowers makers to transform their ideas into reality and elevate their projects to unprecedented heights.
That is a weird combo. Up front it looks like the RA4M1 is the main compilation target and probably has all the IO. Then you have a wifi chip of a different compile target that is faster and more capable in the back. Truely this is the mullet of dev boards.
RA4M1 [0]
48MHz Arm Cortex-M4F Core
256kB Flash Memory and 32kB SRAM
ESP32-S3 [1]
dualcore 32bit LX7, up to 240 MHz
Flash up to 8 MB, optional 2 MB PSRAM in chip package
39 GPIOs, rich set of peripherals
