Patent ID: 8681547
Filing Date: 2014-03-25
Classification: G06F,G11C

Abstract:
1. A method for memory cell coupling compensation, comprising: determining a state of a memory cell by sensing the memory cell with a first voltage that is changed in accordance with a first memory cell coupling compensation voltage; performing an error check on the state of the memory cell; and determining the state of the memory cell by sensing the memory cell with a second voltage that is changed in accordance with a second memory cell coupling compensation voltage in response to the error check failing, wherein the second memory cell coupling compensation voltage is determined, at least partially, by dividing a determined difference between an average threshold voltage of a first number of memory cells of a target page coupled to memory cells programmed to a first program state and an average threshold voltage of a second number of memory cells of the target page coupled to memory cells programmed to a second program state by a difference between an average threshold voltage of the memory cells programmed to the first program state and an average threshold voltage of the memory cells programmed to the second program state.