Threshold voltage distribution adjustment for buffer

US11288160B2 · kind B2 · utility

Assignee

• Micron Technology, Inc. · US

Inventors

• Jeffrey S. McNeil · Nampa, US
• Niccolo′ Righetti · Boise, US
• Kishore Kumar Muchherla · Fremont, US
• Akira Goda · Boise, US
• Todd A. Marquart · Boise, US
• Mark A. Helm · Boise, US
• Gil Golov · Backnang, DE
• Jeremy Binfet · Boise, US
• Carmine Miccoli · Boise, US
• Giuseppina Puzzilli · Boise, US

Key dates

• Filing date: Aug 17, 2020
• Grant date: Mar 29, 2022
• Expiry date: Aug 17, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G11C16/0483
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A method includes writing received data sequentially to a particular location of a cyclic buffer of a memory device according to a first set of threshold voltage distributions. The method further includes performing a touch up operation on the particular location by adjusting the first set of threshold voltage distributions of the data to a second set of threshold voltage distributions in response to a determination that a trigger event has occurred. The second set of threshold voltage distributions can have a larger read window between adjacent threshold voltage distributions of the second set than that of the first set of threshold voltage distributions.