A kind of d flip-flop with clear terminal

Abstract

A D flip-flop with a clearing terminal, including a clock module, a delay filter module, a master-slave DICE latch module, and an output module; wherein the master-slave DICE latch module is based on the clock signal output from the clock module, and Output the corresponding data signal to the data output module through the external data signal received by the delay filter module. The master-slave DICE latch module is provided with a clearing terminal; the delay filter module is used to prevent the transient pulse caused by the single event effect from entering the register; the master-slave DICE latch module is used to correct the transient pulse caused by the single event effect. The internal node flips; the clearing terminal is used to set the output terminal to zero; the delay filter module plays the role of anti-SET, and the master-slave DICE latch module prevents the internal storage node from flipping and plays the role of anti-SEU. A guard band structure is added to the layout design, which effectively suppresses the SEL and also helps to reduce the SET pulse width in the circuit.

Description

technical field [0001] The invention relates to the field of semiconductor devices, in particular to a D flip-flop with a reset terminal. Background technique [0002] When a semiconductor device is in a radiation environment, the surrounding energy particles will penetrate into the chip and generate ionizing radiation, which will generate a certain number of electron and hole pairs on the trajectory of the energy particles. These electrons and holes generated by the ionizing radiation of single energy particles may be absorbed by the internal nodes of the circuit under the action of the electric field, resulting in abnormal function of the semiconductor device. These effects are called single event effects. [0003] A single event effect is a random effect. In 1975, people discovered the abnormal flip phenomenon of Binder, communication satellites, and JK triggers. After continuous research, it was found that the factors that caused the abnormal flip phenomenon included h...

AI Technical Summary

Problems solved by technology

D flip-flop is the most widely used sequential device in integrated circuits. After single-event flipping and single-event transient, this kind of device will retain the error information and affect the subsequent operation, which will lead to the error or collapse of the entire system and cause serious damage. s consequence

In addition, the traditional D flip-flop will show an unstable state after power-on, which is not conducive to the system work

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