Static information storage and retrieval – Read/write circuit – Including signal comparison
Patent
1997-12-16
1999-06-01
Yoo, Do Hyun
Static information storage and retrieval
Read/write circuit
Including signal comparison
36518909, 36518911, G11C 700
Patent
active
059094028
ABSTRACT:
Provided is a sensing amplifier driving/controlling circuit for supplying pull-up/down voltage to a sensing amplifier of a semiconductor memory device, including: a first switching device for connecting internal voltage to the first driving line which in turn applies high voltage to the sensing amplifier; a second switching device for connecting an external voltage to the first driving line which in turn applies high voltage to the sensing amplifier; a third switching device for connecting ground voltage to a second driving line which in turn applies ground voltage to the sensing amplifier; a comparator having an inverse input terminal which is connected to the first driving line and a non-inverse input terminal which receives a reference voltage and thus the comparator is enabled when receiving first and second control signals; an inverter for inverting the first control signal and applying the inverse signal to the control input terminal of the first switching device; and a NAND gate for receiving the outputs of the comparator and the first control signal with its input terminals and performing a NAND operation.
REFERENCES:
patent: 4873673 (1989-10-01), Hori et al.
patent: 5258950 (1993-11-01), Murashima et al.
patent: 5689461 (1997-11-01), Kaneko et al.
patent: 5696730 (1997-12-01), Slezak et al.
LG Semicon Co. Ltd.
Yoo Do Hyun
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