The RL78 8/16-bit microcontrollers (MCUs) greatly improve power efficiency with industry-leading low power consumption at 45.5μA/MHz consumption during normal operation and 0.57μA/MHz during clock operation. Built-in features such as a high-precision (±1%) high-speed on-chip oscillator, background operation data flash capable of 1 million rewrites, temperature sensor, and interface ports for multiple power supplies help reduce system costs and size.

No need to wake up CPU for receiving data
Unique SNOOZE Mode allows some peripherals, i.e., ADC and UART operation whilst in standby modes
Achieve 1/10th of the power consumption