Electronic device including an electronic circuit (1, 8) for delivering an output signal and a programmable non volatile memory coupled to said electronic circuit (1, 8) to allow storage of a binary word (EED[7:0]) representative of at least one adjustable feature (C 1, C 2) of said electronic circuit (1, 8), this electronic device including at least first and second supply terminals (PAD_VDD, PAD_VSS) to which first and second supply potentials (V DD, Vss) are applied, and at least one output terminal (PAD_OUT) at which said output signal from the electronic circuit (1, 8) is delivered, characterized in that the electronic device further includes: - an output stage coupled to said electronic circuit and to said output terminal (PAD_OUT) to set the latter in a first state, called the normal state, in which said output signal from the electronic circuit (1, 8) is delivered by said output terminal (PAD_OUT), or in a second state, called the high impedance state, in which said output signal from the electronic circuit (1, 8) is not delivered by said output terminal (PAD_OUT) and in which said output terminal (PAD_OUT) has a high output impedance; - a control terminal (PAD_OE) and detection means coupled to said output stage and to said control terminal (PAD_OE) to detect the application of a determined control signal at the control terminal (PAD_OE) and, in response, to set said output terminal (PAD_OUT) in said second high impedance state; - a serial communication interface including at least one data introduction terminal (DATA_IN) connected to said output terminal (PAD_OUT) to receive, in serial form, data bits (K to K, D to D, P) transmitted via said output terminal (PAD_OUT) when the latter is in said second high impedance state; and - control means connected to said serial communication interface and to said non-volatile memory for storing said transmitted data bits (K to K, D to D, P) in said non-volatile memory. - an output stage coupled to said electronic circuit and to said output terminal (PAD_OUT) to set the latter in a first state, called the normal state, in which said output signal from the electronic circuit (1, 8) is delivered by said output terminal (PAD_OUT), or in a second state, called the high impedance state, in which said output signal from the electronic circuit (1, 8) is not delivered by said output terminal (PAD_OUT) and in which said output terminal (PAD_OUT) has a high output impedance; - a control terminal (PAD_OE) and detection means coupled to said output stage and to said control terminal (PAD_OE) to detect the application of a determined control signal at the control terminal (PAD_OE) and, in response, to set said output terminal (PAD_OUT) in said second high impedance state; - a serial communication interface including at least one data introduction terminal (DATA_IN) connected to said output terminal (PAD_OUT) to receive, in serial form, data bits (K to K, D to D, P) transmitted via said output terminal (PAD_OUT) when the latter is in said second high impedance state; and - control means connected to said serial communication interface and to said non-volatile memory for storing said transmitted data bits (K to K, D to D, P) in said non-volatile memory.