Omron’s LED drivers offer a unique auto dimming function that helps reduce the CPU load. Unlike a traditional LED driver, where every adjustment in gradation requires a separate command, Omron’s LED driver can make similar adjustments with a single command. This command would specify the target brightness and the rate at which that brightness is achieved. The driver then automatically adjusts the LED from its current output to the specified output at the specified rate. The LED brightness automatically gets routed through every gradation level in between the current output and specified output (up to 1024 gradations) to provide a very smooth and natural change in brightness.