Patent ID: 7684261

Claim:
A semiconductor apparatus, comprising: an internal power supply voltage generating circuit generating an internal power supply voltage in response to an external power supply voltage; a first internal circuit supplied with the internal power supply voltage to operate thereon; a second internal circuit; and a preset signal generating circuit responding to a power-on of the external power supply voltage to the semiconductor apparatus and generating first, second and third preset signals which bring the internal power supply voltage generating circuit, the first internal circuit, and the second internal circuit into respective initial states, generation of the second preset signal being stopped after stopping generation of the first preset signal, and generation of the third preset signal being stopped after stopping generation of the second preset signal; the internal power supply voltage generating circuit being released from its initial state in response to stopping the generation of the first preset signal, the first internal circuit being released from its initial state in response to stopping the generation of the second preset signal, and the second internal being released from its initial state in response to stopping the generation of the third preset signal.