High endurance non-volatile storage

摘要

A non-volatile storage system is disclosed that includes non-volatile memory cells designed for high endurance and lower retention than other non-volatile memory cells.

主权项

1. A method for operating a non-volatile storage system, comprising:
applying one or more programming pulses to a first non-volatile storage element of a first set of plural non-volatile storage elements each having a floating gate structured to have a limited charge absorbing capability irrespective of increase of voltage of programming pulses such that it can be saturated by electrons transferred to it from a channel of the storage element without becoming over programmed, wherein the applied one or more programming pulses cause the floating gate of the first non-volatile storage element to be saturated by electrons transferred to it from the channel of the first non-volatile storage element to thereby program the first non-volatile storage element without over programming the first non-volatile storage element; wherein the system includes a second set of plural non-volatile storage elements each having a corresponding second floating gate that is thicker than the first said floating gate of each of the storage elements of the first set.