Static information storage and retrieval – Powering
Patent
1995-11-21
1997-09-16
Nelms, David C.
Static information storage and retrieval
Powering
365227, 365194, 327285, 327288, G11C 700
Patent
active
056687699
ABSTRACT:
The method of this invention prevents transient currents at high-frequency disable cycles and disables DC current paths after a minimum delay time, thereby reducing power dissipation. This invention includes a delay circuit functioning to prevent disablement of DC paths where chip-disable times occur at intervals below a minimum duration. The result is a decrease in the number of undesired voltage drops on internal power buses due to transient currents. The method detects external chip-disable pulses that occur before a minimum time duration, then prevents those pulses from powering down internal direct-current paths. At the same time, the output driver high impedance functionality of the chip-disable signal is preserved.
REFERENCES:
patent: 5033026 (1991-07-01), Tsujimoto
Coffman Tim M.
Coots Timothy J.
Lin Sung-Wei
Syzdek Ronald J.
Truong Phat C.
Donaldson Richard L.
Heiting Leo N.
Lindgren Theodore D.
Nelms David C.
Niranjan F.
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