A multi-port semiconductor device and method thereof are provided. In an example, the multi-port memory device may include a clock generating unit receiving an external clock signal having a given frequency and a given phase, the clock generating unit generating a plurality of local clock signals by adjusting at least one of the given frequency and given phrase of the received external clock signal such that at least one of the plurality of local clock signals have at least one of a different frequency and a different phase as compared to the given frequency and given phrase, respectively, of the received external clock signal.