Internal voltage generating apparatus and method for semiconductor integrated circuit
First Claim
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1. An internal voltage generating apparatus for a semiconductor integrated circuit, the apparatus comprising:
- a detecting circuit configured to detect levels of a plurality of internal voltages, to generate a plurality of voltage enable signals and a pump enable signal; and
a pump circuit configured to perform a voltage pumping operation in response to the pump enable signal and to output the plurality of internal voltages in response to the plurality of voltage enable signals.
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Abstract
An internal voltage generating apparatus for a semiconductor integrated circuit includes a detecting circuit configured to detect levels of a plurality of internal voltages, to generate a plurality of voltage enable signals and a pump enable signal. A pump circuit performs a voltage pumping operation in response to the pump enable signal and outputs the plurality of internal voltages in response to the plurality of voltage enable signals.
21 Citations
24 Claims
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1. An internal voltage generating apparatus for a semiconductor integrated circuit, the apparatus comprising:
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a detecting circuit configured to detect levels of a plurality of internal voltages, to generate a plurality of voltage enable signals and a pump enable signal; and
a pump circuit configured to perform a voltage pumping operation in response to the pump enable signal and to output the plurality of internal voltages in response to the plurality of voltage enable signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An internal voltage generating apparatus for a semiconductor integrated circuit, the apparatus comprising:
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a first voltage detecting unit configured to detect whether a first internal voltage exceeds a first reference level to output a first voltage enable signal;
a second voltage detecting unit configured to detect whether a second internal voltage exceeds a second reference level to output a second voltage enable signal;
a signal combining unit configured to make a voltage pump operate when at least one of the first voltage enable signal and the second voltage enable signal is enabled; and
a voltage output unit configured to output a pumping voltage output from the voltage pump as the first internal voltage or the second internal voltage in response to whether the first voltage enable signal or the second voltage enable signal has been enabled or not. - View Dependent Claims (16, 17)
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18. An internal voltage generating method for a semiconductor integrated circuit, the method comprising:
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detecting whether each of a plurality of internal voltages exceeds a corresponding reference level thereby outputting a plurality of voltage enable signals;
generating a pump enable signal in response to the plurality of voltage enable signals;
performing a voltage pumping operation in response to input of the pump enable signal so as to generate a pumping voltage; and
receiving the pumping voltage and outputting the plurality of internal voltages corresponding to the plurality of voltage enable signals, respectively. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification