Integrated circuit having a control circuit for controlling conn

Details Integrated circuit having a control circuit for controlling conn Integrated circuit having a control circuit for controlling conn

1997-06-20

1999-03-02

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Delay controlled switch

327403, 327407, 324 731, 371 2236, H03K 1728

Patent

active

058776486

ABSTRACT:
A functional circuit is formed in a chip. A selector circuit is provided, which connects monitor points to electrode pads for external connections for testing the monitor points of the functional circuit. A control circuit is provided for supplying to the selector circuit a control signal which determines whether or not the monitor point is to be connected to the electrode pad by the selector circuit. The control circuit includes a counter circuit having a plurality of cascade-connected flip-flops, a clock signal input terminal for supplying a clock signal to each of the flip-flops in sequence from the flip-flop at an end of the counter circuit, and a reset signal input terminal for supplying a reset signal.

REFERENCES:
patent: 5256964 (1993-10-01), Ahmed et al.
patent: 5418452 (1995-05-01), Pyle
patent: 5673274 (1997-09-01), Yoshida
patent: 5703884 (1997-12-01), Ozaki

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