Applying parametric test patterns for high pin count ASICs on low pin count testers
US6847203B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2003 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Jul 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31926
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an integrated circuit chip test apparatus that has a module test fixture having contact pads that are adapted to make contact with signal input/output pins on an integrated circuit chip being tested. An intermediate banking box is connected to the module text fixture and a tester is connected to the intermediate banking box. The tester includes at least one bank of channels there are more pins on the integrated circuit chip than there are channels in the tester. The intermediate banking box includes switches that are connected between the contact pads and the channels. The switches are adapted to selectively connect a subset of the contact pads to the channels to connect the tester to a subset of pins, thereby allowing the tester to test a portion of the integrated circuit that corresponds to the subset of pins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.