Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Integrated structure
Patent
1998-01-23
2000-08-22
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Integrated structure
327407, 327566, H01L 2500
Patent
active
061078743
ABSTRACT:
A semiconductor integrated circuit device is responsive to a potential level applied to a signal pad connected to a mode changer, and the mode changer causes a mode selector to change a control signal between a first level indicative of a certain combination of sub-circuits of a main circuit selected before separation of the semiconductor chip from a master slice and a second level indicative of another combination of the sub-circuits not selected by a customer; when the manufacturer evaluates the semiconductor integrated circuit device, the manufacturer changes the potential level at the signal pad, and carries out a test for the certain combination and another combination; when the semiconductor chip is sealed in a package, the signal pad is electrically isolated from a source of potential level, and the control signal is fixed to the first level.
REFERENCES:
patent: 4446390 (1984-05-01), Alaspa
patent: 5113093 (1992-05-01), Tashiro et al.
patent: 5504439 (1996-04-01), Tavana
patent: 5764075 (1998-06-01), Fukushima
patent: 5880596 (1999-03-01), White
NEC Corporation
Wells Kenneth B.
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