Additionally, SRAM has been upgraded from 2 kB to 32 kB, and flash memory from 32 kB to 256 kB to support more complex projects.
The Arduino Uno R4 runs at 48 MHz, which provides a 3x increase over the popular Uno R3. The Uno R4 Minima is an affordable option for those who don't need the additional features.
The WiFi version comes with an ESP32-S3 WiFi module in addition to the RA4M1, expanding creative opportunities for makers and engineers. The Arduino Uno R4 is powered by the Renesas RA4M1 32-bit ARM Cortex-M4 processor, providing a significant boost in processing power, memory, and functionality.
