RL78/G24 Microcontrollers Renesas Electronics RL78/G24 Microcontrollers offer the highest processing performance of the RL78 family of MCUs, implementing a CPU operating frequency of up to 48MHz and a flexible application accelerator (FAA). The FAA is a co-processor dedicated to arithmetic operations and it can be operated independently of the CPU, delivering higher processing power. The RL78/G24 MCUs provide enhanced analogue functions and a large range of timers ideal for motor control, power supplies and lighting applications.