The Renesas R5F21336CNFPU0 is a microcontroller unit (MCU) with ARM Cortex-M3 core. It is a low-power, high-performance device with a maximum operating frequency of up to 60 MHz. It has 128 kB of flash memory, 16 kB of RAM, 2 kB of non-volatile data memory and a wide range of peripheral functions including 8-bit basic timers, 16-bit timer/counters, RTC, watchdog timers, I2C, SPI and UART. It also has an LCD display controller and on-chip debug support for easy application development.