Method and apparatus for parallel data interfacing using combined coding and recording medium therefor

A memory device for storing data in compliance with a memory controller, the memory device comprising:

• a data receiver configured to receive first parallel data from the memory controller through a plurality of data lines based on a write command of the memory controller;
• an encoder configured to encode the first parallel data and output encoded data;
• and
• a data storage unit configured to receive the encoded data through an internal bus of the memory device and store the encoded data, wherein the encoder includes:
• an encoding lookup table unit including a plurality of encoding lookup tables each of which is selected by a respective selection signal;
• and
• a selection unit configured to receive N-bit parallel data and to extract respective encoded data which corresponds to a selection signal and to which the N-bit parallel data is mapped from the encoding lookup table unit, where N is 2 or an integer greater than 2,
• wherein the encoding lookup tables respectively store a plurality of encoded data patterns which respectively correspond to patterns of the N-bit parallel data that have been sequentially encoded by a first coding and a second coding, the first and second codings being different types of coding, wherein the first coding is scrambling and the second coding is direct current (DC) balance encoding.