A reference voltage generating apparatus and a driving method therefor are provided. The method of driving the reference voltage generating apparatus for supplying a reference voltage to read data from a ferroelectric memory cell including a ferroelectric capacitor and an access transistor comprises: re-storing, in a reference cell, data equal to data stored in the reference cell, in response to a first control signal, and generating a reference voltage, in the re-stored reference cell, in response to a second control signal, to compare the reference voltage with a voltage corresponding to data stored in the ferroelectric memory cell and to read the data stored in the ferroelectric memory cell. The reference cell includes a ferroelectric capacitor and an access transistor.