R7S721020VCBGAC0 is an 8-bit microcontroller from Renesas. It is an ultra-low power, low pin count, high-performance MCU that is ideal for various applications such as home appliances, industrial equipment, automotive, communication and more. It operates at a main clock frequency of up to 20MHz and has an on-chip Flash memory of 1M bytes. In addition, this MCU has peripheral functions such as interrupt controllers, a watchdog timer and digital-to-analog converters.