Semiconductor memory having a negative voltage generator for an

Details Semiconductor memory having a negative voltage generator for an Semiconductor memory having a negative voltage generator for an

1999-03-29

2000-12-26

Tran, Andrew Q.

Static information storage and retrieval

Read/write circuit

Including reference or bias voltage generator

365226, 3651852, 36518529, 327536, 327537, 327535, 327530, 327538, 327540, 327541, 327543, G11C 514, G05F 110

Patent

active

061669687

ABSTRACT:
A voltage supply generator for a semiconductor memory improves the reliability of the erasing operation. A Vcc voltage detecting unit detects an intensity of a Vcc voltage, which is an external power source, to provide first and second Vcc voltages. A charge pump circuit receives the Vcc voltage and provides a VNEG voltage. A clock circuit applies a clock pulse to the charge pump circuit. A voltage regulating circuit receives the first and second Vcc voltages to monitor and control the VNEG voltage and provides a constant VNEG voltage.

REFERENCES:
patent: 4945267 (1990-07-01), Galbraith
patent: 5282170 (1994-01-01), Van Buskirk et al.
patent: 5532915 (1996-07-01), Pantelakis et al.
patent: 5815356 (1998-09-01), Rodriguez et al.

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