Method of reconfiguring DQ pads of memory device and DQ pad reconfigurable memory device

A memory device, including P DQ pads and memory cell arrays corresponding to the P DQ pads, comprising:

• a DQ organization reconfiguration control unit configured to generate a control signal for reconfiguring an organization of the P DQ pads, where P=2n and n is at least one of 4, 5, 6, and 7, into a desired DQ pad mode based on a user command;
• and
• a DQ organization reconfiguration unit between the P DQ pads and the memory cell arrays comprising data transfer paths through which data may be transferred between the P DQ pads and the memory cell arrays capable of reconfiguring the organization of the P DQ pads into at least one DQ pad mode among a plurality of DQ pad modes, the DQ organization reconfiguration unit configured to reconfigure the organization of the P DQ pads into a desired DQ pad mode by changing the data transfer paths based on the control signal provided by the DQ organization reconfiguration control unit,
• wherein the plurality of DQ pad modes include Xi DQ pad modes in which only i DQ pads among the P DQ pads are used for writing and reading data into/from the memory cell arrays, where i=2k and k is an integer from 0 to n.

A memory device, including P DQ pads and memory cell arrays corresponding to the P DQ pads, comprising:

• a DQ organization reconfiguration control unit configured to generate control signals for reconfiguring an organization of the P DQ pads, where P=2n and n is at least one of 4, 5, 6, and 7, into a desired DQ pad mode based on a user command;
• and
• a DQ organization reconfiguration unit between the P DQ pads and the memory cell arrays configured to reconfigure the organization of the P DQ pads during use of the memory device in at least one of Xi DQ pad modes in which only i DQ pads among the P DQ pads are used for writing and reading data into/from the memory cell arrays, where i=2k and k is an integer from 0 to n,
• wherein the DQ organization reconfiguration unit comprises a plurality of bus lines switchable by the control signals from the DQ organization reconfiguration control unit such that paths through which data may be transferred between the P DQ pads and the memory cell arrays may be variable.