Trims corresponding to program/erase cycles
AssigneeMicron Technology, Inc.
InventorsJeffrey S. McNeil, JR., Karl D. Schuh, Vamsi Pavan Rayaprolu, Giuseppina Puzzilli, Kishore K. Muchherla, Gil Golov, Todd A. Marquart, Jiangang Wu, Niccolo' Righetti, Ashutosh Malshe
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Abstract
Instructions can be executed to adjust a trim at first intervals until a quantity of program/erase cycles (PEC) have occurred. The trim defines a valley width between data states. Instructions can be executed to adjust the trim at second intervals, greater than the first intervals, after the quantity of PEC have occurred.
Claims20
A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to:
- adjust a trim at first intervals until a quantity of program/erase cycles (PEC) have occurred, wherein the trim defines a valley width between data states;
- and
- adjust the trim at second intervals, greater than the first intervals, after the quantity of PEC have occurred.
A system comprising:
- a memory device;
- and
- a processing device coupled to the memory device, wherein the processing device is to:
- adjust a trim defining a program verify voltage corresponding to a data state at a first frequency relative to a quantity of program/erase cycles (PEC) during an early portion of a life of a memory device;
- adjust the trim defining the program verify voltage corresponding to the data state at a second frequency, less than the first frequency, relative to the quantity of PEC during a middle portion of the life of the memory device;
- and
- adjust the trim defining the program verify voltage corresponding to the data state at a third frequency, less than the second frequency, relative to the quantity of PEC during a late portion of the life of the memory device.
A method, comprising:
- receiving a respective indication for each of a plurality of completions of a first interval of program/erase cycles (PEC);
- adjusting a trim defining a valley width between data states by a first magnitude in response to the respective indication of the first interval;
- subsequently receiving a respective indication for each of a plurality of completions of a second interval of PEC;
- wherein the second interval includes more PEC than the first interval;
- and
- adjusting the trim by a second magnitude, greater than the first magnitude, in response to the respective indication of the second interval.
Dependencies are inferred from the claim text.