Patent ID: 7332955

Claim:
A high voltage generating circuit, comprising: a pumping driving signal generator for sequentially generating n-number of signals whenever at least one of m-number of control signals is activated, wherein n is greater than m, and for generating n-number of pumping driving signals with a pumping cycle time in response to the n-number of signals; n-number of pumping control signal generating circuits for generating a plurality of pumping control signals in response to the n-number of pumping driving signals, respectively; and n-number of pumps for performing a pumping operation to pump a high voltage level in response to each of the n-number pumping control signals, wherein the pumping driving signal generator comprises a gate circuit for combining the m-number of control signals to generate a combined control signal, a counter for sequentially activating the n-number of signals in response to the combined control signal, and n-number of pulse signal generators for generating n-number of pumping driving signals with a pumping cycle time in response to the n-number of signals, respectively.