Adaptive Operation of 3D Memory

摘要

A three dimensional nonvolatile memory system includes a sensing unit configured to sense bit line current and/or voltage for bit lines of a plurality of separately-selectable portions of a block and to compare respective results with a reference and an adjustment unit configured to individually modify operating parameters for one or more of the plurality of separately-selectable portions in response to the comparing of respective results with the reference.

主权项

1. A three dimensional nonvolatile memory system comprising:
a three dimensional nonvolatile memory block that contains a plurality of separately-selectable portions, an individual separately-selectable portion containing a plurality of bit lines extending perpendicular to a substrate surface; a sensing unit configured to sense bit line current and/or voltage for bit lines of the plurality of separately-selectable portions of the block and to compare respective results of the sensing for individual separately-selectable portions with a reference; and an adjustment unit that is in communication with the sensing unit, the adjustment unit configured to individually modify operating parameters for one or more of the plurality of separately-selectable portions of the block in response to the comparing of respective results for the one or more of the plurality of separately-selectable portions of the block with the reference.