Patent ID: 11888446
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
a digital-analog converter circuit;
a control circuit;
a power source control switch;
an analog potential holding circuit including a first transistor; and
a plurality of Gilbert circuits,
wherein the analog potential holding circuit is configured to hold an analog potential output from the digital-analog converter circuit,
wherein the control circuit is configured to control the analog potential holding circuit and the digital-analog converter circuit,
wherein the power source control switch is configured to stop supply of a power source voltage to the control circuit in a period during which the analog potential held in the analog potential holding circuit is not updated, and
wherein the first transistor includes a semiconductor layer including an oxide semiconductor in a channel formation region.