Patent ID: 7633788
Filing Date: 2009-12-15
Classification: G11C

Abstract:
1. A variable resistive random-access memory (RAM) device, comprising: a main wordline; a wordline connecting switch in signal communication with the main wordline; a sub-wordline in signal communication with the wordline connecting switch; a variable resistive memory cell having a variable resistance in signal communication with a first terminal of a switching element, a second terminal of the switching element disposed in signal communication with the sub-wordline; a sub-word line pre-charging switch in signal communication with the sub-wordline; and a pre-charge voltage selector in signal communication with the sub-wordline pre-charging switch, the pre-charge voltage selector having a first selector switch in signal communication with a first voltage greater than a write voltage, and a second selector switch in signal communication with a second voltage less than the first voltage.