Patent ID: 11914490
Assignee: MICRON TECHNOLOGY, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 17:
18. A method comprising:
tracking a mean and a sigma of each metric of a set of multiple metrics, each metric of the set of multiple metrics being a measurable event of a specified memory operation on a memory block of one or more memory devices, each memory device including one or more memory arrays, each memory array including multiple memory blocks, each memory block arranged as a block of memory cells;
for each metric of the set of multiple metrics:
measuring a value of the metric, the value being a current value with respect to the tracked mean and sigma of the metric;
calculating a Z-score using the value, the tracked mean, and the tracked sigma for the respective metric;

comparing the Z-score to a Z-score threshold for the metric, providing a comparison for the metric; and
controlling a read operation based on results of the comparison; and
controlling retirement of the memory block based on a comparison of a parameter to a parameter threshold from the read operation associated with at least one of the metrics of the set and the comparison for the at least one of the metrics.