SEMICONDUCTOR DEVICE AND ELECTRONIC APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a novel semiconductor device or a semiconductor device capable of erasing data at high speed.SOLUTION: The semiconductor device includes a plurality of circuits 21 each having a function of storing data and a wiring EL. The plurality of circuits 21 each include a first transistor 101, a second transistor 102, and a capacitor 103. One of a source and a drain of the first transistor 101 is electrically connected to a gate of the second transistor 102 and the capacitor 103. The first transistor 101 includes an oxide semiconductor in a channel formation region. The wiring EL has a function of a back-gate of the first transistor 101. A potential for selecting the plurality of circuits 21 is supplied to the wiring EL. Thus, data stored in the plurality of circuits 21 is erased.SELECTED DRAWING: Figure 2