A multi-core system for providing a communication function between software components (SWCs) and a method therefor are provided. The method may include: determining a memory operating as a data buffer, based on an execution cycle of each of the SWCs, when communicating between an SWC executed by a first core and at least one SWC executed by a second core; writing, by the SWC executed by the first core, data in the data buffer; and reading, by the at least one SWC executed by the second core, the data from the data buffer.