In some embodiments, a data access apparatus includes a memory device including a plurality of addresses, an address mapping unit configured to map the addresses of the memory device with respective predetermined addresses such that they correspond to each other, a data division unit, a data mapping unit configured to map respective predetermined specific addresses in regions divided by the data division unit, and a control unit configured to control the data such that the data is stored in the addresses of the memory device mapped with the respective specific addresses in the regions divided by the data division unit.