Electronic device and electronic system for performing phase adjustment operation

An electronic device comprising:

• a phase detection circuit configured to detect a difference between phases of a reference clock and a feedback clock;
• and
• a phase-locked signal generation circuit configured to generate a phase-locked signal based on results of the detection of the difference between the phases of the reference clock and the feedback clock,
• wherein the phase-locked signal generation circuit is configured to:
• set a first set period based on a compensation code and generate the phase-locked signal when the difference between the phases of the reference clock and the feedback clock is equal to or smaller than a first phase difference during the first set period after a start of an initial operation, and
• stop the generation of the phase-locked signal when the difference between the phases of the reference clock and the feedback clock is equal to or greater than a second phase difference, which is greater than the first phase difference, after outputting the phase-locked signal.