R5F100GJAFBX0 is a microcontroller unit (MCU) manufactured by Renesas Electronics Corporation. It is based on their RX100 series of processors and has a 32-bit CISC architecture. It has a maximum operating frequency of 16MHz, and comes with 32KB ROM, 8KB RAM, 7 channels of 10-bit A/D converters, and 5 channels of 8-bit PWM output. It also has a variety of peripherals, such as a wide variety of timer/counters, port pins, and serial I/O. It is ideal for use in small to mid-sized embedded systems.