To generate an internal voltage by capability corresponding to an external voltage.

In the voltage generation circuit, a boosting unit 20 includes three pump circuits 21 to 23 connected in series, and the respective pump circuits 21 to 23 perform a pumping operation based on a clock signal CLK1 which has been generated by an oscillation unit 31, and generate a voltage which has boosted an input voltage. Accordingly, the boosting unit 20 boosts an external voltage Vdd with the respective pump circuits 21 to 23 and generates an internal voltage Vpp. A control unit 32 detects variation of the internal voltage Vpp and controls the number of stages of the pump circuits 21 to 23 included in the boosting unit 20 in accordance with the detection result (variation).