In an embodiment an integrated circuit includes a non-volatile memory having a plurality of memory cells, wherein each memory cell is configured to store information, and wherein each memory cell is configured to provide a reading current having an intensity dependent on a value stored in the memory cell when the memory cell is selected for reading; and a sense amplifier including a first amplifier configured to amplify the reading current of each memory cell selected for reading, an oscillation generator configured to generate on basis of the amplified signal a signal having oscillations according to a frequency dependent on the intensity of the current of the amplified signal, a counter configured to count the oscillations of the signal generated by the oscillation generator over at least one given period of time and a digital processing circuit configured to determine a value represented by the amplified signal on basis of the value counted during the at least one given period of time using a lookup table between values countable by the counter and values representable by the amplified signal.