Patent ID: 8279692
Filing Date: 2012-10-02
Classification: G11C

Abstract:
1. A semiconductor device comprising: a main data line on which data having an amplitude between a first potential and a second potential are transferred; a sub-data line on which data having an amplitude between the first potential and the second potential are transferred; a switch transistor provided between the sub-data line and the main data line; a precharge circuit that precharges at least one of the sub-data line and the main data line to the second potential; and a control unit that supplies a third potential to a control electrode of the switch transistor so as to bring the switch transistor into a conductive state and supplies a fifth potential to the control electrode so as to bring the switch transistor into a non-conductive state, wherein a potential difference between the first and third potentials is larger than a potential difference between the first and second potentials, a potential difference between the first and fifth potentials is smaller than a potential difference between the first potential and a fourth potential, and a potential difference between the fourth potential and a potential of one of the sub-data line and the main data line defines a threshold voltage of the switch transistor.