A semiconductor device includes a first memory cell including a first transistor and a first capacitor, the first transistor comprising a first gate electrode, a first source, and a first drain; a second memory cell including a second transistor and the first capacitor, the second transistor comprising a second gate electrode, a second source, and a second drain; a first word line coupled to the first gate electrode; and a second word line coupled to the second gate electrode. The first capacitor is electrically connected between the first and second transistors.