Nonvolatile latch circuit and a driving method

Nonvolatile latch circuit 10 according to the present invention, the first electrode 1a, the second electrode 1b, and the ferroelectric capacitor 1 having a ferroelectric film 1c interposed between these electrodes, the first electrode 1a a reset terminal Tre connected, the CMOS inverter element 2 connected to the second electrode 1b of the ferroelectric capacitor 1, and the voltage switching terminal Tpl for applying a voltage to the second electrode 1b, the second electrode 1b and is connected between the second input terminal Tpl, the switching element 5 to switch the voltage applied to the second electrode 1b, a set terminal to apply a voltage for switching on and off the switching element 5 and a tse, voltage generated in the second electrode 1b by the polarization remaining in the ferroelectric film 1c is, the threshold voltage Vt of NMISFET4 CMOS inverter element 2 And it is configured to be higher than.