Digital electronic circuit with low power consumption

Details Digital electronic circuit with low power consumption Digital electronic circuit with low power consumption

2006-09-05

2006-09-05

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

C326S037000, C326S046000, C326S095000, C326S098000

Reexamination Certificate

active

07102382

ABSTRACT:
The digital electronic circuit (1) includes a logic cell (2) for processing data (82) , a flip-flop (3) for storing data (83) processed in the logic cell (2), a power supply (4), and a clock (5) for triggering the flip-flop (3) . The logic cell (2) is disconnected from the power supply (4) when the clock (5) is not active, as it is not needed for memorizing of the flip-flop states, and connected with the power supply (4) when the clock (5) is enabled. For switching the power supply, a switch (7) switched by the clock enable (6) is arranged between the logic cell (2) and the power supply (4). Such a simple additional switch (7) occupies only a relatively small area on the chip, but permits a drastic reduction by about 90% of the leakage currents. The circuit (1) is especially design and may be used for instance in mobile telecommunication devices.

REFERENCES:
patent: 6141761 (2000-10-01), Chang et al.
patent: 6239614 (2001-05-01), Morikawa
patent: 6281710 (2001-08-01), Poirier et al.
patent: 6433584 (2002-08-01), Hatae
patent: 1 195 902 (2002-04-01), None
patent: 8 142456 (1996-06-01), None

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