Apparatuses and methods for detecting frequency ranges corresponding to signal delays of conductive VIAS
US9934832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2017 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jun 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2225/06541
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatuses for monitoring a signal on a conductive via are described. An example apparatus includes: a controller, a first conductive via, a second conductive via and an evaluation circuit. The controller provides a clock signal as a first signal. The first conductive via provides a second signal responsive to the first signal. The second conductive via provides a third signal responsive to the second signal. Responsive to the third signal, the evaluation circuit provides an evaluation result signal. The evaluation result signal is indicative of a frequency of the clock signal, based on a delay of the third signal relative to the clock signal. The first conductive via, the second conductive via and the evaluation circuit may be included in an interface die. The evaluation circuit may detect whether a frequency of the first signal is below a first threshold frequency and may further provide the evaluation result signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.