The Arduino UNO R4 boasts a 3x performance increase over the UNO R3 and , in addition, SRAM has been upgraded from 2kB to 32kB, and flash memory from 32kB to 256kB to support more complex projects.

With the integration of the RA4M1 processor from Renesas, the UNO R4 adds a 32-bit microcontroller with up to 16x the clock speed, memory and flash storage. Based on an Arm Cortex-M4 core, the RA4M1 ...