Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2004-12-20
2009-11-10
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S537000, C327S544000
Reexamination Certificate
active
07616032
ABSTRACT:
Provided are an internal voltage initializing circuit for use in a semiconductor memory and a driving method thereof, which are capable of preventing a back bias voltage from abnormally increasing due to a pumping operation of a VPP pump according to a change in a level of a power-up signal. The internal voltage initializing circuit includes: a high voltage initializing unit for selectively connecting a power supply voltage terminal an a high voltage terminal in response to a power-up signal; and a back bias voltage initializing unit for selectively connecting a ground terminal and a back bias voltage terminal in response to a signal produced by delaying the power-up signal by a predetermined time.
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Hynix / Semiconductor Inc.
Lowe Hauptman & Ham & Berner, LLP
Tra Quan
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