Triplication redundancy D trigger capable of realizing self error detection and single event upset prevention

Abstract

The invention discloses a triplication redundancy D trigger capable of realizing self error detection and single event upset prevention. The trigger comprises a first clock circuit, a first main latch register, a first secondary latch register, a second clock circuit, a second main latch register, a second secondary latch register, a third clock circuit, a third main latch register, a third secondary latch register, a selector circuit, a first inverter circuit, a second inverter circuit and an error detection control circuit. The trigger is on the basis of a traditional reinforced triplication redundancy D trigger, output of three basic triggers in the triplication redundancy structure is controlled through the designed error detection control circuit, that correct output can be determined by a selector at any time is guaranteed; when output upset occurs in one of the three basic triggers, the one with output upset is instantly recovered through the error detection control circuit, upset accumulation can be avoided, and single event upset caused upset accumulation can be avoided, and single event upset prevention capability is further improved.

Description

technical field [0001] The invention relates to a triple-mode redundant D flip-flop, in particular to a single-event flip-resistant triple-mode redundant D flip-flop with self-correction and error detection. Background technique [0002] In cosmic space, there are a large number of high-energy particles (protons, electrons, heavy ions) and charged particles. After the integrated circuit is bombarded by these high-energy particles and charged particles, an electronic pulse will be generated in the integrated circuit, which may cause the original level of the internal node of the integrated circuit to flip. This effect is called a single event upset (Signal Event Upset, SEU). The higher the linear energy transfer (LinearEnergyTransfer, LET) value of the single-particle bombardment integrated circuit, the stronger the electronic pulse generated. Integrated circuits used in aviation and aerospace fields are threatened by single event upsets, which can make integrated circuits w...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a three-mode redundant D flip-flop with self-correcting and error detection for the problem that the anti-single event flip-flop of the current anti-single event flip-flop has low anti-single event flip-flop ability , it can work normally under single-event bombardment with higher LET values ​​without single-event flipping

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