Task mapping method of network-on-chip semiconductor device

A task mapping method of a network-on-chip (NoC) semiconductor device, the method comprising:

• assigning a first task of a plurality of tasks for node control of the NoC semiconductor device to a first node of a first chip, wherein the NoC semiconductor device comprises a plurality of stacked chips including the first chip;
• computing tag values of a second tasks of a plurality of tasks that are not assigned to the first node;
• and
• assigning the second tasks to a second node according to the tag values,
• wherein the assigning of the second tasks comprises:
• comparing the tag values of the second tasks to ‘1’;
• and
• assigning the second tasks to the second node of the first chip when the tag value of the second tasks is larger than ‘1’, and assigning the second tasks to the second node of a second chip when the tag values are equal to or less than ‘1’.