Storage device and operating method of the storage device

A method for operating a memory device which includes a plurality of memory cells and transmits and receives data with another memory device, the method comprising:

• receiving an operation mode command input from a memory controller;
• determining any one of a normal operation mode and a memory communication operation mode according to the operation mode command;
• receiving a data movement command input from the memory controller;
• generating a pad control signal for determining a pad to receive a signal corresponding to the data movement command according to the determined operation mode;
• receiving the signal corresponding to the data movement command through the determined pad according to the pad control signal;
• generating an internal operation command corresponding to the data movement command according to the determined operation mode;
• and
• performing one of a read operation of reading first target data to be output to the another memory device from the plurality of memory cells and a program operation of storing second target data input from the another memory device in the plurality of memory cells, based on the internal operation command.

A storage device comprising:

• a first memory device configured to perform a read operation in response to a data movement command according to a first operation mode, and output data read by the read operation;
• a second memory device configured to receive the data from the first memory device, and perform a program operation of storing data in response to the data movement command according to a second operation mode;
• and
• a memory controller configured to control the first memory device and the second memory device such that data read from the first memory device is moved to the second memory device by providing an operation mode command and the data movement command to each of the first memory device and the second memory device.