CENTER READ REFERENCE VOLTAGE DETERMINATION BASED ON ESTIMATED PROBABILITY DENSITY FUNCTION

摘要

Embodiments include a system, method and apparatus for estimating respective first and second CDF 2 (cumulative density function) for the values ​​of the plurality of NVM (non-volatile memory) of the memory cells in the page. CDF may at least in part on one or more of the decoder output code word for the data stored in the page. Based at least in part on the CDF, has a first and a PDF 2 (probability density function) for the values ​​of the page in memory can be estimated. Then it can be determined by the central read reference voltages for reading the cells in a page. Central read reference voltage may be based at least in part on the first and the 2 to the PDF. ;