The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 12, 2020

Filed:

Apr. 20, 2018
Applicant:

Macronix International Co., Ltd., Hsinchu, TW;

Inventors:

Chun Hsiung Hung, Hsinchu, TW;

Han Sung Chen, Hsinchu, TW;

Ming Chao Lin, TaiChung, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G11C 11/56 (2006.01); G06F 11/10 (2006.01);
U.S. Cl.
CPC ...
G11C 11/5642 (2013.01); G06F 11/108 (2013.01); G06F 11/1048 (2013.01);
Abstract

A first read operation is performed using a first voltage level to read data from a memory array. An instant bit count corresponding to a number of bits in the data read from the memory array is determined. A recorded bit count corresponding to a number of bits in the data that was written at a time of writing the data to the memory array is accessed. A difference between the instant bit count and the recorded bit count is obtained. Conditioned on determining that the difference is less than or equal to a first threshold value, the data read from the memory array is output using the first read operation. Conditioned on determining that the difference is greater than the first threshold value, a second read operation is performed using a second voltage level that is distinct from the first voltage level.


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