Constant voltage generating circuit with improved line voltage c

Details Constant voltage generating circuit with improved line voltage c Constant voltage generating circuit with improved line voltage c

Filed on

1997-12-09

Date issued

1999-08-17

Examiner

Nelms, David

Patent Class

Static information storage and retrieval

SubClass

Floating gate

SubSubClass

Particular biasing

Other Related Categories

36518909, G11C 1604

Type

Patent

Status

active

Patent number

059403225

Description

ABSTRACT:
A control circuit incorporated in a constant-voltage generating circuit receives a control signal. While the control signal is inactive, the control circuit sets the first and second nodes at the ground level and deactivates the current mirror circuit. When the control signal is activated, the control circuit releases the first and second nodes from the ground level and activates the current mirror circuit. Thus, no transient excessive charging of the bit line occurs immediately after the circuit is activated, and no soft-writing of data takes place.

REFERENCES:
patent: 4802138 (1989-01-01), Shimamune
patent: 5296801 (1994-03-01), Ohtsuka et al.
patent: 5608676 (1997-03-01), Medlock et al.
patent: 5642308 (1997-06-01), Yoshida

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