Patent ID: 11955182

Abstract:
Adaptive and dynamic control of the duration of a pre-program pulse based on a number of planes selected for the pre-program operation is disclosed. A value for a pre-program time increment parameter may be selected based on the number of planes for which the pre-program operation will be performed or determined based on a predefined association with the number of planes. A pre-program voltage pulse may then be applied for a duration that is equal to a default duration for a single-plane pre-program operation incremented by the time increment parameter value. This approach solves the technical problem of Vt downshift for multi-plane pre-program operations, and thus, ensures that the success rate of secure erase operations does not diminish as the number of planes increases. This, in turn, allows for pre-program operations to be consistently performed on a multi-plane basis, which produces the technical effect of improved system performance.