Method of reading and logically OR'ing or AND'ing...

Static information storage and retrieval – Systems using particular element – Flip-flop

Reexamination Certificate

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Details

C365S156000, C365S207000

Reexamination Certificate

active

06552924

ABSTRACT:

FIELD OF THE INVENTION
This invention relates generally to CMOS integrated circuits and more particularly to circuits for storing digital data.
SUMMARY OF THE INVENTION
A pair of cross-coupled inverters that hold a digital state are powered by supplies that also function as row select and column bit lines. A voltage differential between at least first pair of supply lines and a second pair of supply lines causes a current to flow into at least a third supply line depending upon the state of the cells. This current is sensed to read the logical OR or AND of the cells.


REFERENCES:
patent: 5365475 (1994-11-01), Matsumura et al.
patent: 6292388 (2001-09-01), Camarota
patent: 6385081 (2002-05-01), Shiomi

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