An apparatus for verifying the data retention in a non-volatile memory is
described which comprises at least one multiplexer and at least one shift
register. The multiplexer and the at least one shift register are disposed
so that the data of the non-volatile memory are in input to the
multiplexer the output of which is in turn in input to the at least one
shift register. The apparatus comprises a logical circuitry which by
suitable commands controls the data transfer from said multiplexer to said
at least one shift register, the data loading and the output data shifting
in said at least one shift register.
