Radiation-resistant self-refresh register based on triple-mode redundancy

A three-mode redundancy and register technology, applied in static memory, instruments, etc., can solve problems such as circuit failure, avoid error accumulation and improve work efficiency.

Active Publication Date: 2016-06-29
WUXI I-MENG ELECTRONIC TECH CO LTD
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Problems solved by technology

The traditional TMR hardening method is to copy a register into three copies, and adopt a voting method of choosing two out of three. Any one of the registers is bombarded by heavy particles and flipped, and the circuit works normally when the output of the other two registers is normal; The other two registers in the environment also have the possibility of flipping under the bombardment of heavy particles, resulting in circuit failure

Method used

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  • Radiation-resistant self-refresh register based on triple-mode redundancy
  • Radiation-resistant self-refresh register based on triple-mode redundancy
  • Radiation-resistant self-refresh register based on triple-mode redundancy

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Embodiment Construction

[0013] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and examples of implementation. The specific implementation cases described here are only used to illustrate the present invention, and are not intended to limit the present invention.

[0014] figure 1 It shows the commonly used register structure. The circuit structure is divided into front and back two-stage latch circuits. The previous stage latch circuit, when C is low, the circuit is turned on, and the data D enters the latch state. At this time, the latter stage circuit is closed. ; In the latter stage of the latch circuit, when C is at a high level, the circuit is turned on, and the data D enters the latch state of the latter stage from the previous stage and is output from the Q terminal. At this time, the previous stage circuit is closed. In a certain period of t...

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Abstract

The invention provides a register with self-refresh function based on triple-mode redundancy anti-irradiation. In the two-stage latch structure of the register, a voter is added to the second-stage latch structure. The input end of the voter has One is connected to the output end of this register, and the other two input end data come from the output of the other two registers with self-refresh function in the triple-mode redundant structure. When working, when one of the three data output channels is overturned by the impact of a single event, the other two channels immediately correct the stored value to the wrong register; thus avoiding long-term work in the irradiation environment, resulting in two channels of radiation caused by accumulation of radiation. The problem of register flipping occurs.

Description

technical field [0001] The invention relates to a radiation-resistant self-refresh register based on triple-mode redundancy, which is used to form a triple-mode redundant structure and belongs to the field of integrated circuit design. Background technique [0002] As a spacecraft travels in space, it is constantly exposed to a radiation environment of charged particles. High-energy protons and neutrons in the space radiation environment can cause single event effects in semiconductor devices in electronic systems. Single-Event Effect (SEU) is one of the most serious radiation effects on integrated circuits. Single event flipping will cause various soft errors and seriously affect the reliability of aerospace electronic systems. [0003] In many chips, it is necessary to save the initial configuration words in the register for a long time, triple module redundancy (TripleModuleRedundant, TMR) is an effective method for strengthening the SEU. The traditional TMR hardening ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C29/44
Inventor 陈钟鹏万书芹施斌友张涛封晴
Owner WUXI I-MENG ELECTRONIC TECH CO LTD
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