Patent ID: 11961979
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G  Y | IPC H

Claim 0:
1. A semiconductor device comprising a first memory element, a second memory element, a comparison circuit, and a current adjustment circuit,
wherein the first memory element is configured to retain reference temperature information,
wherein the second memory element comprises a capacitor and a first transistor comprising an oxide semiconductor in a first semiconductor layer,
wherein the second memory element is configured to measure ambient temperature, and to retain the ambient temperature as ambient temperature information between one electrode of the capacitor and one of a source electrode and a drain electrode of the first transistor due to a resistance change of the oxide semiconductor,
wherein the comparison circuit is configured to determine an operation of the current adjustment circuit by comparing the reference temperature information and the ambient temperature information, and
wherein the current adjustment circuit is configured to supply a current to a secondary battery.