Memory Die Management
AssigneeWestern Digital Technologies, Inc.
InventorsAbhijith Prakash, Xiang Yang
Life of this patent
Estimating the term…
Abstract
Memory die management based on biasing voltages. Some memory dies are formed of memory holes having a semi-circular shape. This semi-circular shape results in a decrease in biasing voltage compared to memory holes having a circular shape. Systems and methods described herein organize memory dies into memory die groups according to their biasing voltages. During operation, data is relocated between the memory die groups based on how often the data is read. Data may be scrambled within their respective memory die groups to maintain appropriate storage space.
Claims20
A data storage device, comprising:
- a memory interface configured to interface with a non-volatile memory, the non-volatile memory including a plurality of memory dies, each of the memory dies including a bias voltage value;
- and
- an electronic processor configured to:
- compare the bias voltage value of each of the memory dies to a voltage threshold,
- assign memory dies having a bias voltage value greater than the voltage threshold to a first group of memory dies, and
- assign memory dies having a bias voltage value less than or equal to the voltage threshold to a second group of memory dies.
A method comprising:
- comparing the bias voltage value of each of a plurality of memory dies to a voltage threshold;
- assigning memory dies having a bias voltage value greater than the voltage threshold to a first group of memory dies;
- and
- assigning memory dies having a bias voltage value less than or equal to the voltage threshold to a second group of memory dies.
A memory device that supports organizing memory dies, the memory device comprising:
- a memory including at least a first memory die and a second memory die, the first memory die having a first bias voltage value and the second memory die having a second bias voltage value;
- and
- a controller configured to sort the first memory die into a first group and the second memory die into a second group.
Dependencies are inferred from the claim text.