Lowe Hauptman Ham & Berner, LLP
Internal voltage generator and semiconductor memory device having the same, and method of generating internal voltage
An internal voltage generator includes an oscillator, a cycle control unit and a voltage generator. The oscillator periodically generates a pulse-shaped oscillation signal. The cycle control unit bypasses the oscillation signal to an output node, or selectively controls the cycle of the oscillation signal and output a controlled oscillation signal to the output node. The voltage generator generates an internal voltage in response to the oscillation signal or the controlled oscillation signal received through the output node. The cycle of the controlled oscillation signal is shorter than that of the oscillation signal. The operating speed of the voltage generator when receiving the controlled oscillation signal is faster than that of the voltage generator when receiving the oscillation signal.
Hynix Semiconductor Inc.
G H G G H
G11C H03K G11C G11C H02M
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Seong Jun
Lee