In a method for driving a semiconductor memory including a ferroelectric capacitor for storing a multi-valued data in accordance with a displacement of polarization of a ferroelectric film and a detector connected to one of an upper electrode and a lower electrode of the ferroelectric capacitor for detecting...http://www.google.es/patents/US6449184?utm_source=gb-gplus-sharePatente US6449184 - Method for driving semiconductor memory
