I am not sure if I am at the right forums.
Say if I write some code in Arduino IDE, and set the CPU_F to say 1MHz in the Arduino IDE, and upload the code to Arduino Mega 2560(or other arduino) with a programmer(wipe out the bootloader), will I still get the right time? eg delay and URAT com. etc...
My goal is to run the chip in just enough speed to save energy.
or if it won't work, what are the other option to run the clock slower.