electronic circuit for control signals of tension on specific critical issues, for example in a circuit of por (power on reset)

摘要

An electronic circuit for controlling voltage signals at particular critical nodes of an electronic device connected to the circuit, said circuit being inserted between a supply voltage reference and a ground voltage reference, and having at least one internal reference node connected to the critical nodes, and including at least one capacitive element inserted between the supply voltage reference and the ground voltage reference, and connected to the internal reference node through a charging device, said capacitive element being charged with the supply voltage reference to maintain, at the internal reference node, a voltage value above a predetermined threshold voltage as the supply voltage reference is cut off.