Control method and write leveling method of memory device and memory controller memory device and memory system performing write leveling operations

摘要

The present invention discloses a memory device, a memory device, and a memory system for performing a light leveling operation, a light leveling method for a memory device, and a light leveling operation. The method includes generating a clock signal to be transmitted to a memory device, generating a data strobe signal to be transmitted to the memory device, generating a command signal and a light leveling control signal to be transmitted to the memory device during a light leveling operation, Detecting a phase difference between the command signal and the data strobe signal received by the memory device in response to the light leveling control signal in the light leveling operation; And adjusting the timing of generation of the data strobe signal with respect to the clock signal in operation.