Power glitch signal detection circuit and security chip
US11609277B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2020 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Nov 24, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31708
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A power glitch signal detection circuit, a security chip and an electronic apparatus are disclosed. The power glitch signal detection circuit comprises: a latch and a signal output module, wherein a first input of the latch is connected to a power supply voltage, a first output of the latch is connected to a ground voltage, a second input of the latch is connected to a third output of the latch, a third input of the latch is connected to a second output of the latch, and the second output or the third output is connected to the signal output module. The power glitch signal detection circuit could detect a power glitch on the power supply voltage or the ground voltage, and the power glitch signal detection circuit has the advantages of low power consumption, small area, high speed, high sensitivity and strong portability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.