Delay flip-flop

TLDR: In this article, a delay flip-flop consisting of a clock module, delay filtering module, a master-slave DICE latch module and an output module is used for correcting inner node upset caused by the single-particle effect.

Abstract: A delay flip-flop comprises a clock module, a delay filtering module, a master-slave DICE latch module and an output module, wherein the master-slave DICE latch module outputs a corresponding data signal to the data output module according to a clock signal that is output from the clock module and an outer data signal that is received through the delay filtering module. The master-slave DICE latch module is composed of a master-grade module and a slave-grade module. The delay filtering module is used for preventing entering of a transient pulse which is caused by a single event effect into the register. The master-slave DICE latch module is used for correcting inner node upset which is caused by the single-particle effect. The delay filtering module performs a function of preventing a single event transient pulse. The master-slave DICE latch module prevents overturning of an inner storage node, thereby performing a function of preventing single event upset. A protective belt structure is added in layout design. The structure of the delay flip-flop effectively restrains single event latchup, and facilitates reduction of a single event transient pulse width in a circuit.