Voltage supply circuit and semiconductor memory

Details Voltage supply circuit and semiconductor memory Voltage supply circuit and semiconductor memory

2008-06-05

2010-02-16

Dinh, Son (Department: 2824)

Static information storage and retrieval

Powering

C365S189110, C365S233100

Reexamination Certificate

active

07663960

ABSTRACT:
A voltage supply circuit that switches and outputs multiple set voltages from an output terminal, has a boosting circuit that boosts a voltage supplied from a power supply and outputs the voltage to the output terminal; a voltage detecting circuit that outputs a first flag signal when detecting that the voltage outputted from the boosting circuit is not lower than the set voltage, outputs a second flag when detecting that the voltage outputted from the boosting circuit is not lower than a frequency adjusting voltage set lower than the set voltage; and a control circuit that controls an operation of the boosting circuit in response to the set voltage and the output signal of the voltage detecting circuit.

REFERENCES:
patent: 7200066 (2007-04-01), Krenzke et al.
patent: 2005/0168263 (2005-08-01), Fukuda et al.
patent: 2007/0001771 (2007-01-01), Hori et al.
patent: 2007/0014176 (2007-01-01), Krenzke et al.
patent: 11-154396 (1999-06-01), None
U.S. Appl. No. 11/393,984, filed Nov. 14, 2007, Jun Nakai, et al.

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