Memory controller and operation method thereof for performing an interleaving read operation

An operation method of a memory controller which controls a nonvolatile memory device including a first plane and a second plane, the operation method comprising:

• transmitting a first read command for the first plane and a second read command for the second plane to the nonvolatile memory device;
• reading first read data corresponding to the first plane from the nonvolatile memory device in response to a determination that status information of the first plane indicates a ready state;
• and
• after reading the first read data of the first plane, reading second read data corresponding to the second plane from the nonvolatile memory device without checking status information of the second plane based on an elapsed time after a point in time when the second read command is transmitted.

A memory controller, comprising:

• a command manager configured to output a first read command to control a nonvolatile memory device;
• and
• a status manager including
• a timer configured to measure a first elapsed time from a first point in time when the first read command is output, and
• a compare circuit configured to store a skip time,
• wherein the compare circuit is configured to compare the measured first elapsed time with the skip time to generate a first control signal, and
• wherein the command manager is configured to, based on the first control signal,
• skip issuing of a first status read command associated with the first read command, and
• output a first memory access command associated with the first read command.