Method and apparatus for power glitch detection in integrated circuits
US9541603B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2013 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Oct 6, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for power glitch detection in IC's is disclosed. In one embodiment, a method includes a detection circuit in an IC detecting a voltage transient wherein a value of a supply voltage has at least momentarily fallen below a reference voltage value. Responsive thereto, the detection circuit may cause a logic value to be stored in a register indicating that the detection circuit has detected the supply voltage falling below the reference voltage. The IC may include a number of detection circuits coupled to the register, each of which may provide a corresponding indication of detecting the supply voltage falling below the reference voltage. The detection circuits may be placed at different locations, and thus reading the register may yield information indicating the locations where, if any, such voltage transients occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.