Patent ID: 9177655
Filing Date: 2015-11-03
Classification: G11C

Abstract:
1. A method of changing state in a nonvolatile memory device, the nonvolatile memory device having plural memory cells, each memory cell having a corresponding wordline, and a charge storage element operatively positioned between the wordline and a corresponding channel, where data is to be programmed or erased in each memory cell using multiple program-verify cycles, the method comprising for each memory cell: coupling the corresponding channel to a first voltage reference; coupling the corresponding wordline to a second voltage reference; and using a pulsing mechanism to pulse a selected one of (i) the channel or (ii) the wordline to a third voltage reference, to provide for a pulsed voltage drop across the memory cell; where using a pulsing mechanism includes repeatedly pulsing the selected one during a program portion of each program-verify cycle; where repeatedly pulsing the selected one includes repeatedly pulsing the corresponding channel between to the first voltage reference and the third voltage reference during the program portion of each program-verify cycle to thereby apply a plurality of pulses, each pulse having a duration of no greater than approximately 100 nanoseconds.