A semiconductor device in which an increase of circuit area is prevented is provided. A semiconductor device including a control circuit with a plurality of scan chain circuits, a DA converter electrically connected to the control circuit, and a plurality of potential holding units electrically connected to the DA converter is provided. The plurality of potential holding units each include a transistor including an oxide semiconductor in a channel formation region and a capacitor electrically connected to the transistor. In accordance with digital data held in any one of the plurality of scan chain circuits, an output potential output from the DA converter is held in any one of the plurality of potential holding units.