A register circuit designed for radiation hardening

Abstract

The invention discloses a register circuit with radiation reinforcing design, which comprises a first-stage master latch, a second-stage slave latch, a first phase inverter and a second phase inverter. The first-stage main latch is provided with two data inputs which are respectively from a data input di from a register and a complementary data input dib from the register; the first-stage main latch is provided with 1 clock input ck and two data outputs which are respectively a latch data ql and a complementary latch data qlb; the second-stage slave latch is provided with two data inputs which are respectively from the data output ql of the first-stage main latch and the complementary data output qlb of the first-stage main latch; the second-stage slave latch is provided one clock input ck and a complementary clock input ckn from the register; and the second-stage slave latch is provided with 2 data outputs which are respectively a register data rq of the register and a complementary register data rqb of the register. With the utilization of the register circuit with the radiation reinforcing design, the irradiation property of the register is enhanced, and no excessive area consumption is caused while the irradiation property of the register is improved.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a register circuit designed for radiation hardening. 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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