METHOD AND MEMORY SYSTEM FOR REDUNDANTLY STORING SENSIBLE DATA AND ADJUSTING A REFERENCE VALUE

A method is provided for reading data from a non-volatile memory array comprising a plurality of memory cells. Each memory cell is configured to store one bit of information. The method comprises the steps of: powering on the memory array, where information from at least a first memory cell and a second memory cell is collectively associated with one bit of sensible data; b) reading a first memory cell value and a second memory cell value by comparing a reference value to a respective electrical property value of the respective memory cell to determine the respective memory cell value; c) adjusting the reference value in the event at least the first and second memory cell values have a first combination of logic state values to obtain an adjusted reference value, wherein the adjusted reference value lies in the space between a first distribution of possible electrical property values for the first memory cell value, and a second distribution of possible electrical property values for the second memory cell value; d) reading the first and second memory cell values by using the adjusted reference value to obtain a second combination of logic state values; and e) determining a sensible data bit value based on the obtained second combination of logic state values.