According to one embodiment, a semiconductor device includes: a first memory cell provided in a first semiconductor chip; a first output buffer circuit configured to output data of the first memory cell outside, the first output buffer circuit provided in the first semiconductor chip; a first calibration control circuit configured to calibrate an impedance of the first output buffer circuit, a first terminal connected to the first calibration control circuit, the first calibration control circuit provided in the first semiconductor chip; and a first resistance element connected to the first terminal, the first resistance element provided in the first semiconductor chip.