US 7,463,504 B2
Active float for the dummy bit lines in FeRAM
Sung-Wei Lin, Plano, Tex. (US); and Sudhir Madan, Richardson, Tex. (US)
Assigned to Texas Instruments Incorporated, Dallas, Tex. (US)
Filed on Sep. 15, 2005, as Appl. No. 11/227,936.
Prior Publication US 2007/0058413 A1, Mar. 15, 2007
Int. Cl. G11C 11/22 (2006.01)
U.S. Cl. 365—145  [365/149; 365/189.09] 45 Claims
OG exemplary drawing
 
1. A method for operating a dummy memory cell having a plate line, a dummy bit line, a pass transistor, a storage node and a storage capacitor, the storage capacitor connected between the plate line and the storage node and the pass transistor connected between the storage node and the dummy bit line, the method comprising:
floating the dummy bit line during plate line pulsing activity;
wherein a sense amplifier connected to a memory cell that is coupled to the plate line in a core region of an array is not connected to the dummy bit line.