| 摘要 |
An internal voltage generating apparatus of a semiconductor device is provided to generate an initial internal voltage stably, by comprising a passive element capable of initializing the internal voltage by supplying an external power supply voltage, a ground voltage and a power-up signal to the internal voltage generating apparatus even when the power-up signal is below a threshold voltage. A power-up sensing part(110) generates a power-up signal by receiving an external power supply voltage. An internal voltage generation part(130) generates an internal voltage. An initial potential maintaining part(120) comprises a transistor(1210,1230) and a passive element(1215,1235). The transistor is enabled by the power-up signal and provides the external power supply voltage to the internal voltage generation part, and the passive element is connected to the transistor in parallel. A source of the transistor is connected to the external power supply voltage or a ground voltage, and a drain of the transistor is connected to the internal voltage generation part.
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