Patent ID: 6525956
Filing Date: 2003-02-25
Classification: G11C

Abstract:
A ferroelectric memory for storing digital data comprising:a ferroelectric capacitor memory device; a selective transistor for selecting said capacitor; a ferroelectric memory cell in which a drain or a source of said selective transistor is connected to one of terminals of said ferroelectric capacitor; a word line connected to a gate of said selective transistor; a bit line connected to the drain or the source of said selective transistor, said drain or said source not being connected to said ferroelectric capacitor; a cell plate line connected to the other terminal of said ferroelectric capacitor; a first precharge transistor for precharging said bit line to a first potential; means for precharging said bit line to a second potential, said precharging means comprising a second precharge transistor coupled to said bit line to supply precharge current to said bit line while said word line selects said ferroelectric memory cell; and amplifying means for sensing and amplifying precharge current of said second precharge transistor to read data stored in said ferroelectric memory cell.