A method and apparatus for accessing a non-volatile memory cell. In some
embodiments, a memory block provides a plurality of memory cells arranged
into rows and columns. A read circuit is configured to read a selected
row of the memory block by concurrently applying a control voltage to
each memory cell along the selected row and, for each column, using a
respective local sense amplifier and a column sense amplifier to
successively differentiate a voltage across the associated memory cell in
said column to output a programmed content of the row.