This article discusses the development of effective methods and tools for assessing the fault tolerance of logical circuits, the mechanism of logical masking, the development of the route of re-synthesis of combinational circuits, methods for increasing fault tolerance. A method of iterative circuit modification is proposed, due to an increase in the level of logical masking of the circuit.
The article describes methods for ensuring resistance to heavy charged particles (HCP) of the RAM block of the microprocessor. A description of the implementation and a block diagram of static memory based on dummy blocks is given. The paper considers methods of combating the biopolar effect, which are aimed at controlling the potential of the transistor body and reducing the resistance. The dependence of the critical charge of a SOI-memory cell the gain of a parasitic biopolar transistor is modeled. To increase the fault tolerance of combinational circuits consisting of control logic and decoder blocks, redundancy is applied at the level of individual valves.