Method and apparatus for disabling unused sense amplifiers

Details Method and apparatus for disabling unused sense amplifiers Method and apparatus for disabling unused sense amplifiers

1995-07-07

1996-10-15

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

327544, 365227, H03K 19173

Patent

active

055657915

ABSTRACT:
A programmable circuit includes: (a) a plurality of programmable cells; (b) a sense amplifier for detecting states of the plurality of programmable cells; (c) a programmable unit for receiving a signal from the sense amplifier; (d) a configuration circuit for configuring the programmable unit; and (e) a sense control circuit coupled to the sense amplifier and to the configuration circuit for enabling or disabling the sense amplifier using a configuration signal of the configuration circuit. The programmable circuit may further include: (f) a second programmable unit for receiving the signal from the sense amplifier; and (g) a second configuration circuit for configuring the second programmable unit, where the sense control circuit is coupled to the second configuration circuit for enabling or disabling the sense amplifier using a second configuration signal of the second configuration circuit. The sense control circuit may include an OR gate but typically does not include programmable devices so that the sense control circuit can be a simple and small device. The sense amplifier may include: a first multiplexer coupled to the sense control circuit, a second multiplexer coupled to the sense control circuit, and a disable circuit. The configuration signal of the configuration circuit may be used not only for enabling or disabling the sense amplifier but also for configuring the programmable unit.

REFERENCES:
patent: 4851720 (1989-07-01), Pathak et al.
patent: 4959564 (1990-09-01), Steele
patent: 4963769 (1990-10-01), Hiltpold et al.
patent: 5138198 (1992-08-01), Shen et al.
patent: 5247213 (1993-09-01), Trinh et al.
patent: 5281873 (1994-01-01), Seki

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