Voltage generator, a voltage generator and a semiconductor device using the same, and a driving method thereof

Capacitor (4), capacitor (4) series connected ferroelectric capacitor (6), an output terminal (11), a capacitor for grounding the output terminal (11) (10), the power supply voltage supply terminal (13), power supply a connection node between two capacitors voltage supply terminal (13) (4, 6) (N1) switch (1) connects the, and the connection node (N1) and the output terminal (11) switches for connecting the (9) the provided, in the first period, while the switch (1) and (9) which is in the oFF state, the terminal (3) is a power supply voltage is supplied to the terminal (7) is grounded, the second period in, a power supply voltage is supplied to the terminal (3), and is switched (9) is in the oN state, in the third period, the switch (9) is turned off, the switch (1) is turned on, and the terminal (7) is grounded In the fourth period, power is supplied line pressure to the terminal (7), from the first period to the fourth period is repeated in order, a voltage generating circuit.