Patent ID: 8856603
Filing Date: 2014-10-07
Classification: G11C

Abstract:
1. Memory comprising: memory cells, which are single or multiple cells, with dissymmetrical behavior wherein the dissymmetrical behavior is exhibited as a sensitivity of the memory cell in a first electrical state by which the memory cell changes from one of a first or a second electrical state to a corresponding one of a second or a first electrical state during an attack by irradiation, the sensitivity being lower for passing from the first state into the second state than for passing from the second state to the first state, pairs of memory cells formed by the memory cells with dissymmetrical behavior, wherein a first cell of a pair is charged with a first piece of binary information and a second cell of the pair is charged with a second piece of binary information, a detector to detect that the first and second memory cells of a pair are charged with two pieces of contradictory information instead of two pieces of consistent information, a reference memory cell associated with the pair of memory cells, the reference memory cell being loaded with a piece of information corresponding to the first state, and a logic circuit to designate, as a function of the reference memory cell, that the cell of the memory cells of a pair that is in the second state has been affected by the irradiation when the states of the cells of the pair of cells are contradictory.