Patent ID: 6930917
Filing Date: 2005-08-16
Classification: G11C,H03B

Abstract:
1. An electronic device including an electronic circuit for delivering an output signal and a programmable non volatile memory coupled to said electronic circuit to allow storage of a binary word representative of at least one adjustable feature of said electronic circuit, this electronic device including at least first and second supply terminals to which first and second supply potentials are applied, and at least one output terminal at which said output signal from the electronic circuit is delivered, wherein the electronic device further includes: an output stage coupled to said electronic circuit and to said output terminal to set the latter in a first state, called the normal state, in which said output signal from the electronic circuit is delivered by said output terminal, or in a second state, called the high impedance state, in which said output signal from the electronic circuit is not delivered by said output terminal and in which said output terminal has a high output impedance; a control terminal and detection means coupled to said output stage and to said control terminal to detect the application of a determined control signal at the control terminal and, in response, to set said output terminal in said high impedance state; a serial communication interface including at least one data introduction terminal connected to said output terminal to receive, in serial form, data bits transmitted via said output terminal when the latter is in said high impedance state; and control means connected to said serial communication interface and to said non-volatile memory for storing said transmitted data bits in said non-volatile memory.