IO pad circuitry with safety monitoring and control for integrated circuits
US9632139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2013 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | May 21, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An input/output (IO) pad circuitry for integrated circuits (ICs) that is equipped with safety monitoring and control circuits to ensure that signals provided to/from the IO pad behave correctly. The IO pad circuitry allows monitoring of the IO pad signals, the detection of an undesired behavior, e.g., a wrong signal level or a wrong waveform. Furthermore, depending on a selected safety mode, a correction of the IO pad signals by overriding the monitored signal is further achieved. When in full safe mode, signals are provided as required, while in a partial safe mode only certain signals are provided depending on the status. A grouped safe mode allows providing a safe status to a group of IO pads using a single control. A monitoring circuitry between a plurality of input signals to an IC pad is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.