Memory device and memory controller configured to perform re-training based on temperature information and electronic device including the same

An electronic device comprising:

• a system on-chip configured to output a write clock and a write data signal;
• and
• a memory device configured to receive the write data signal based on the write clock and to output a read data signal and a data strobe signal whose timing is different from a timing of the write clock,
• wherein the memory device includes:
• a first interval oscillator configured to replicate a difference between a path of the write clock and a path of the read data signal;
• and
• a second interval oscillator configured to replicate a difference between the path of the write clock and a path of the write data signal,
• wherein the system on-chip is configured to:
• obtain a first delay time according to the difference between the path of the write clock and the path of the read data signal;
• and
• obtain a second delay time according to the difference between the path of the write clock and the path of the write data signal, and
• wherein the memory device is configured to:
• obtain a first counting value while the first interval oscillator operates, the first counting value being indicative of the first delay time;
• obtain a second counting value while the second interval oscillator operates, the second counting value being indicative of the second delay time;
• correct the first counting value depending on a range in which a temperature of the memory device belongs to obtain a corrected first counting value;
• and
• correct the second counting value depending on the range in which the temperature belongs to obtain a corrected second counting value.