Crossbar array apparatus and write method thereof

A crossbar array apparatus, comprising a crossbar array comprising a plurality of row lines, a plurality of column lines, and resistance-variable type memory elements connected to the row lines and the column lines at each of crossing portions between the plurality of the row lines and the plurality of the column lines;

• a row selecting unit selecting the row lines of the crossbar array;
• a column selecting unit selecting the column lines of the crossbar array;
• and
• a writing unit performing a write operation to the resistance-variable type memory elements,
• wherein the writing unit measures a sneak current generated when a write voltage is applied to a selected resistance-variable type memory element and applies a write current comprising a sum of a sneak current regenerated according to a measurement result and a write current set for performing the write operation.