| 摘要 |
PURPOSE: A reset signal generation circuit and a nonvolatile ferroelectric memory device using the same are provided to generate a reset signal stably only when a power supply voltage has a level above a constant level without regard to a power-on slope of the power supply voltage. CONSTITUTION: A power sensor part maintains an amplitude of an applied voltage for a constant time. A threshold voltage control part(22) supplies a current to a feedback control part according to the variation of a power supply voltage and a bias voltage. The feedback control part(23) transits an output voltage of the power sensor part to a low level only when the power supply voltage reached a constant level according to the output voltage of the power sensor part and the current supplied from the threshold voltage control part. A pull-up control part(24) pulls up the output voltage of the power sensor part to a high level, and outputs a voltage signal controlled by the feedback control part as a reset signal. And a self bias part(25) controls the current supplied to the feedback control part from the threshold voltage control part until the power supply voltage reached the constant level.
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