Integrated logic circuit having plural input cells and flip-flop

Details Integrated logic circuit having plural input cells and flip-flop Integrated logic circuit having plural input cells and flip-flop

1990-05-09

1991-10-08

Hudspeth, David

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

3074821, 3072721, 307465, H01L 2500, H01K 3284, G06F 738

Patent

active

050557106

ABSTRACT:
Flip-flops are disposed corresponding to input circuits or output circuits of an integrated logic circuit so as to be cascaded to configure a shift register for a test and to enable a parallel transfer of data between each flip-flop and a corresponding input or output circuit. As a result, without connecting the probe to all terminals of the LSI, test signals can be supplied from some terminals via all input circuits to an internal circuit so as to conduct a diagnosis.

REFERENCES:
patent: 4357703 (1982-11-01), Van Brunt
patent: 4527079 (1985-07-01), Thompson
patent: 4926066 (1990-05-01), Maini et al.

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