Register circuit for preventing single particle from being overturned

Abstract

The invention discloses a register circuit for preventing a single particle from being overturned. The register circuit comprises a first-grade main latch, a second-grade secondary latch, a first inverter and a second inverter. The first-grade main latch is provided with two data inputs which are respectively selected form a data input di of a register and a complementary data input dib of the register; the first-grade main latch is provided with one clock input ck; the first-grade main latch is provided with two data outputs which respectively comprise latching data ql and complementary latching data qlb; the second-grade secondary latch is provided with two data inputs which are respectively selected form a data output ql and a complementary data output qlb of the first-grade main latch; the second-grade secondary latch is provided with one clock input ck and is selected from a complementary clock input ckn of the register; and the second-grade secondary latch is provided with two data outputs which respectively comprise registering data rq and complementary registering data rqb of the register. With the adoption of the register circuit disclosed by the invention, the anti-radiation performance of the register is obviously enhanced.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, and in particular to a single-event flip-resistant register circuit. Background technique [0002] In the world of digital circuits, the implementation of circuits mainly includes a series of combinational logic circuits and sequential logic circuits. The state of combinational logic circuits is only related to the current input, and sequential logic circuits are generally related to the input before the current clock. Based on these characteristics, the realization of the control state machine in the digital circuit is inseparable from the sequential logic circuit. In addition, the pipeline technology and clock synchronization technology often used in the digital circuit cannot be separated from the sequential logic circuit. The most important part of the sequential logic circuit is It is the data register, so in today's widely used digital circuits, the register circuit is of great ...

AI Technical Summary

Problems solved by technology

[0003] Generally, widely used register circuits are composed of master-slave two-stage latches. Circuits based on latch structures will be used in space, aerospace and other application fields due to the radiation effects produced by a large number of high-energy particles and cosmic rays. Serious effects on latches in the circuit

Radiation effects such as single event flipping will cause flipping of latched data, thereby destroying the data stored in the register, and as the size of integrated feature circuits continues to decrease, the impact of radiation effects on register circuits will increase.

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