Oscillators – Ring oscillators
Reexamination Certificate
2005-12-29
2008-11-11
Pascal, Robert (Department: 2817)
Oscillators
Ring oscillators
C331S186000, C365S222000
Reexamination Certificate
active
07449965
ABSTRACT:
A self refresh period signal generator includes: a voltage detection unit for detecting a voltage level of a power supply voltage in order to generate a plurality of period control signals according to the detected voltage level; and an oscillation unit for generating a ring oscillation signal having a constant period determined by a resistance of a period control resistor when a self refresh signal is activated, wherein the resistance of the period control resistor is controlled according to logic levels of the plurality of period control signals.
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Goodley James E
Hynix / Semiconductor Inc.
McDermott Will & Emery LLP
Pascal Robert
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