Patent ID: 7633805

Claim:
A generator circuit, comprising: a generator circuit output terminal for connection to a matrix of non-volatile memory cells; a converter structured for coupling to a first supply reference and having a first output terminal, coupled to a common node, and a second output terminal; a comparator structured for coupling to a second supply reference and positioned between said common node and said generator circuit output terminal, said comparator having first and second input terminals and an output terminal, the first and second input terminals being respectively connected to said first and second output terminals of said converter, the comparator being configured to supply, at the output terminal of the comparator, a compared voltage given by a comparison between first and second voltage values present on said first and second input terminals, respectively; a reference cell positioned between said common node and a first voltage reference terminal, said reference cell including a control gate and a floating gate with a contact terminal; and a biasing block having an input terminal and first and second output terminals, the first output terminal of the biasing block being coupled to the control gate, the second output terminal of the biasing block being coupled to the contact terminal, and the input terminal of the biasing block being coupled to said output terminal of said generator circuit, the biasing block being structured to periodically bias said floating gate contact terminal at a biasing voltage of a second voltage reference terminal.