Apparatus and method of generating power-up signal of semiconductor memory apparatus
AssigneeHynix Semiconductor Inc.
InventorDuk-Ju Jeong
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Abstract
An apparatus for generating a power-up signal of a semiconductor memory apparatus includes a first power-up signal generator that generates a first power-up signal to be activated on the basis of a comparison between a power supply voltage level supplied to the semiconductor memory apparatus and a first set voltage level, and a second power-up signal generator that generates a second power-up signal to be activated with a predetermined delay time on the basis of a comparison between the power supply voltage level and a second set voltage level.
Claims15
An apparatus for generating a power-up signal of a semiconductor memory apparatus comprising:
- a first power-up signal generator configured to output a first power-up signal to be activated based on a comparison between a power supply voltage level supplied to the semiconductor memory apparatus and a first set voltage level;
- and
- a second power-up signal generator configured to generate a second power-up signal to be activated with a predetermined delay time to stabilize the power supply voltage, based on a comparison between the power supply voltage level and a second set voltage level;
- and
- a third power-up signal generator configured to generate a third power-up signal based on the outputs of the first and second power-up signals,
- wherein the first power-up signal generator and second power-up signal generator operate independently.
Dependencies are inferred from the claim text.