Hi, It is known that in MCUs with high output frequencies, the output speed fluctuates according to internal processes that are related, for example, with temperature; that's because higher output frequency MCUs limit automatically their clock frequencies to preserve themselves in conditions of use with high clock speeds, that increase the temperature of the hardware. Is it expected any similar problem with Arduino (output speed fluctuations at high output frequencies)? Thanks
No, the Arduino will not slow down the system clock speed (16 MHz) when the chip gets hot. There is a ceramic resonator (on earlier models: a crystal) to regulate the frequency to very close to 16 MHz. If the ATmega processor temperature exceeds the specified temperature limits the operation will become unreliable.
I never had an hot Arduino... anyone? (should I divide by zero more often? ;)