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

Abstract

An electronic device includes a system on-chip that outputs a write clock and a write data signal, and a memory device that receives the write data signal based on the write clock and outputs a read data signal and a data strobe signal whose frequency is different from a frequency of the write clock. The memory device further includes a first interval oscillator, a second interval oscillator, and a temperature sensor. The electronic device performs a first training in initialization of the electronic device and performs a second training in an operation after the initialization. The memory device performs a counting operation during an operation of an interval oscillator in the second training and corrects a final count value with reference to temperature information of the memory device.