A Single Event Reinforced Programmable Double Data Rate Register Circuit and Control Method

Abstract

A single-event hardened programmable double data rate register circuit and control method, realize the single-event harden The generating circuit, the data multiplexer and the data holding circuit are used to control the timing of multiple double-redundant interlocking structure registers to realize the double data rate register function in multiple modes. The single particle reinforcement index of the present invention is three orders of magnitude higher than that of traditional registers, and can realize level latches, single data rate edge triggers, reverse edge mode double data rate edge triggers and same edge mode double data rate edges Programmable functions such as flip-flops enable users to have higher flexibility, better timing performance and extremely high anti-single event hardening indicators when using programmable user registers.

Description

technical field [0001] The invention relates to a single-particle hardened programmable double data rate register circuit and a control method, in particular to a programmable single-particle hardened register circuit and a control method optimized for the application requirements of programmable logic devices, belonging to an integrated circuit field. Background technique [0002] Programmable logic devices have the advantages of high flexibility, low cost, and short cycle time. They can greatly shorten the product development cycle and minimize risks. They have become core components in the integrated circuit industry. The programmable user register is the core circuit in the programmable logic device to realize the user's sequential logic function, and can be programmed to realize various sequential functions according to the user's needs. [0003] On the other hand, due to the influence of the spatial single event effect, the data in the programmable user register will ...

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Problems solved by technology

[0003] On the other hand, due to the influence of the spatial single event effect, the data in the programmable user register will be single-event flipped, causing errors in user stored data. If the programmable user register with single-event flipping is used as a key state machine, it will Make this user function interrupt

[0004] Traditional single-event hardening methods use dual-mode redundancy, triple-mode redundancy, etc. to harden memories and flip-flops, but have limited hardening capabilities for programmable logic devices

At the same time, these programmable user registers need to be able to work at a very high data transfer rate, using traditional hardening methods in double data rate registers will bring a huge area requirement, and it is difficult to meet the requirements of high-speed transmission

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