Patent ID: 7319361

Claim:
An internal voltage generation circuit of a semiconductor device comprising: a reference voltage generator for generating a reference voltage having different levels depending on the operation mode of an semiconductor device; an active voltage generator for generating an active internal voltage of a level based on the reference voltage; a standby voltage generator for generating a standby internal voltage of a level based on the reference voltage; and an active voltage generation controller for controlling the active voltage generator such that the active voltage generator outputs the active internal voltage in a specific period after completion of a self-refresh mode; and wherein the reference voltage generator includes an initial reforence voltage output unit for outputting an initial reference voltage of a predetermined level; a voltage divider for dividing the initial reference voltage into a first reference voltage and a second reference voltage; and a multiplexer responsive to a control signal which is enabled in the self-refresh mode, for outputting the second reference voltage as the reference voltage when the control signal is enabled, and the first reference voltage as the reference voltage when the control signal is disabled.