The device of the circuit comprising a microprocessor and a memory a semi - conductors in the exchange of data with the microprocessor, in particular for motor vehicle, 2004.

摘要

Device of the circuit characterizes in that the devices of the voltage supply to the operating voltage of the microcontroller mc and the voltage of the input of the selection of chips csa of the memory a semi - conductors cmos - ram are provided so that, in the case of a failure or in the case of a power disconnect at an instant t of the voltage source u, the temporary loss of the operating voltage u of the microcontroller mc and the voltage u evolve so that the time t - t to the detection of the most early possible to the fall of the voltage u is equal or inferior at time t - t between the instant t of the fall of the voltage u and the instant t of the crossing towards the bottom of the lower threshold voltage of the input of the selection of chips csa of the memory a semi - conductors cmos - ram.