Method and device for reading dual bit memory cells using multiple reference cells with two side read

摘要

A method for reading at least one programmed dual bit memory cell using a plurality of programmed dual bit reference cells. The reference cells are programmed with selected parameters to compensate for changes in the memory cell. The memory cell is read and compared to data in the reference cells to determine the memory cell data. Thus, changes to the memory cell over time are accounted for by programming the reference cells using the selected parameters.