R1WV3216RBG-7SIS0 is a Renesas 32-bit microcontroller, based on the RXv3 core. It features 1.25 MB ROM and 256 KB RAM, a 12-bit ADC unit, four UARTs, advanced hardware security and cryptography, and a wide variety of communication interfaces. It has an operating voltage of 4.5 to 5.5V and operates at speeds up to 50 MHz.