Static information storage and retrieval – Read/write circuit – Including reference or bias voltage generator
Reexamination Certificate
2005-04-05
2005-04-05
Tran, M. (Department: 2818)
Static information storage and retrieval
Read/write circuit
Including reference or bias voltage generator
C365S226000
Reexamination Certificate
active
06876585
ABSTRACT:
A circuit and method for selecting reference voltages in a semiconductor memory device, in which an internal voltage or a high voltage can be changed by use of a plurality of reference voltage generators therewith, so as to enable the selection of mutually different reference voltages. In one embodiment, the circuit comprises a plural number of reference voltage generators for generating first and second reference voltages; an internal voltage generator for receiving the first or second reference voltage, and generating an internal voltage of a constant level; and a high voltage generator for receiving and boosting the first or second reference voltage, and generating the high voltage VPP of a given level. In such construction, one reference voltage out of the first and second reference voltages is selected and input to the high voltage generator, and one reference voltage out of the first and second reference voltages is selected and input to the internal voltage generator, in response to a reference voltage selection signal supplied to the device.
REFERENCES:
patent: 4792749 (1988-12-01), Kitagawa et al.
patent: 5426616 (1995-06-01), Kajigaya et al.
patent: 5818257 (1998-10-01), Villa
patent: 6097180 (2000-08-01), Tsukude et al.
patent: 6326834 (2001-12-01), Akita et al.
patent: 6333864 (2001-12-01), Nishimura et al.
Choi Jong-Hyun
Kim Jae-Hoon
Marger Johnson & McCollom
Samsung Electronics Co,. Ltd.
Tran M.
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