Semiconductor integrated circuit
US4980890A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 11, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Apr 11, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor integrated circuit comprises an internal data bus, a first holding part for entering and holding data which are obtained from outside the semiconductor integrated circuit via the internal data bus, a reading part for reading out the data held in the first holding part and for outputting the read out data to the internal data bus, a second holding part for entering and holding the data which is read out by the reading part via the internal data bus, a third holding part for entering and holding test data which are obtained from outside the semiconductor integrated circuit bia the internal data bus, a discriminating part for comparing the data held in the second and third holding part and for obtaining a discrimination result based on whether the compared data coincide, and an output part for outputtting the discrimination result of the discrimination part of the outside of the semiconductor integrated circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.