| 摘要 |
A semiconductor integrated circuit device comprising: a circuit block formed on a semiconductor substrate; an electrically conductive pattern formed in an upper layer of a portion to be protected of the circuit block; an oscillation circuit connected to the electrically conductive pattern, and configured to oscillate at an oscillation frequency determined by a circuit constant of the electrically conductive pattern; and a detection circuit configured to determine whether a preset range includes the oscillation frequency of the oscillation circuit is provided. |
