Circuit for controlling power supply to electronic processing circuits, and especially electronic processing circuits having a redundant architecture

A circuit for controlling power supply to electronic circuits, and particularly electronic data processing circuits, which have a processing section with at least one memory in which at least one processing program is loaded, a power source/converter (2) being provided (referring to Figures 1 to 3), which provides the power signal to the electronic processing circuits, whereas said power control circuit (3) has a section (103) for checking the supply voltage, which generates a signal for enabling/disabling the processing section (1, 1A, 1B). According to the invention, the power control circuit comprises a configuration memory (203) which contains data for configuring the processing program or parts of the processing program which data is critical for the execution of said processing program, which memory (203) communicates with the processing section (1, 1A, 1B), whereas the check section (103) enables or disables access to the configuration memory (203) by the processing section (1, 1A, 1B) or communication between the configuration memory (203) and the processing section (1, 1A, 1B), otherwise it forces said configuration memory to send signals for disabling the processing section (1, 1A, 1B) or for setting the processing section when the supply voltage/s for the processing section do not correspond, within given tolerances, to the correct supply voltages for said processing section.