Patent ID: 11906332
Assignee: STMICROELECTRONICS (ROUSSET) SAS
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. A method for detecting whether a severable part of an electrically conductive wire connecting first and second terminals of an integrated circuit has been severed in the event of an opening or attempted opening of a closed container, comprising:
charging a first capacitor electrically isolated from a first substrate of the integrated circuit and connected to the first terminal;
charging a second capacitor electrically isolated from the first substrate of the integrated circuit and having a first electrode connected to a drain region of a first MOS transistor; and
using said first MOS transistor to take at least one measurement of a voltage of the first electrode of the second capacitor and compare the measured voltage to a threshold.