Apparatus for determining an expected data age of memory cells

摘要

Apparatus including an array of memory cells, a plurality of access lines each corresponding to a respective plurality of memory cells of the array of memory cells and each connected to a control gate of each memory cell of its respective plurality of memory cells; and a controller for access of the array of memory cells that is configured to cause the apparatus to apply a particular voltage level to a particular access line of the plurality of access lines, and determine a value indicative of a number of memory cells of the respective plurality of memory cells for the particular access line that are activated in response to applying the particular voltage level. The controller might further be configured to determine an expected data age of the respective plurality of memory cells, and/or determine a plurality of read voltages for reading the respective plurality of memory cells.