SOFT ERROR PROTECTED DYNAMIC CIRCUIT

摘要

PROBLEM TO BE SOLVED: To protect a logical condition potential level in a logical circuit despite a collision of an alpha-particle. SOLUTION: A logical circuit senses inappropriate or earlier switching start by a collision of an alpha-particle or the like and operates so as to hold an appropriate logical level in the logical circuit. In an execution configuration, an internal node 603 of an upper part circuit in a dual rail logical circuit is connected to a gate terminal of a crossover connection PFET element 623 in a lower part circuit. This crossover connection PFET element 623 senses switch operation started at an inappropriate time in the upper part circuit, again operates a holding PFET in the upper part circuit, and can operate so that it reestablishes an appropriate logical potential level in the upper part circuit.