US Patent 7663905 Ferroelectric memory device and data read method in same

A ferroelectric memory device includes a memory cell, read circuit, temperature sensing circuit, and read controller. The memory cell includes a ferroelectric capacitor. The read circuit is configured to read data from the memory cell. The temperature sensing circuit is configured to sense the ambient temperature of the memory cell. The read controller is configured to receive a temperature sensing signal from the temperature sensing circuit, and inhibit a data read operation by the read circuit when the temperature sensed by the temperature sensing circuit is higher than a preset temperature.