| 摘要 |
An integrated circuit has a sleep switch, provided between a first power line and a second power line, which is constituted by a transistor of a first threshold voltage, and which becomes non-conducting in a sleep mode, and further has a latch circuit, connected to the second power line, which is constituted by a transistor of a second threshold voltage which is lower than the first threshold voltage, and a ferroelectric capacitor for storing data held in the latch circuit in accordance with the polarization direction of a ferroelectric film thereof. The integrated circuit also comprises a control signal generating circuit which, when returning to an active mode from the sleep mode, generates a plate signal for driving a terminal of the ferroelectric capacitor to generate a voltage in the latch circuit in accordance with the polarization direction, and generates a sleep signal for causing the sleep switch to conduct to thereby activate the latch circuit following the driving of the ferroelectric capacitor.
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