Patent ID: 8139424
Filing Date: 2012-03-20
Classification: G11C

Abstract:
1. A semiconductor apparatus, comprising: a first internal voltage generator generating a first internal voltage in response to an external power supply voltage; a second internal voltage generator generating a second internal voltage in response to the external power supply voltage, the second internal voltage being larger in absolute value than the first internal voltage; and a preset signal generating circuit responding to a power-on of the external power supply voltage to the semiconductor apparatus and generating, independently of the first internal voltage, first and second preset signals which bring the first and second internal voltage generators into respective initial states, generation of the second preset signal being stopped after stopping generation of the first preset signal; the first internal voltage generator being released from its initial state in response to the stopping the generation of the first preset signal to be allowed to generate the first internal voltage, and the second internal voltage generator being released from its initial state in response to the stopping the generation of the second preset signal to be allowed to generate the second internal voltage, the second internal voltage being generated after generation of the first internal voltage.