A device and method for strengthening the reliability of ram data based on sram type fpga

Abstract

The invention discloses an SRAM type FPGA-based RAM data reliability reinforcement apparatus and method, relates to an SRAM type FPGA-based on-chip or off-chip RAM data reinforcement apparatus and method, and aims to solve the problems of high anti-radiation process reinforcement expense, high memory triplication redundancy hardware overhead, poor reliability of an EDAC circuit designed based on an SRAM type FPGA, and the like in an existing memory reinforcement method. According to the reinforcement apparatus and method, the encoding / decoding operation of the EDAC circuit is realized by adopting a Hsiao code as an error correction code; a single-error-correcting and double-error-detecting function of data can be realized; the write-back after error data correction is realized in a cache way; and a write address and write data of a processor or a peripheral access dual-port RAM are temporarily stored in an address cache and a data cache. The reinforcement apparatus and method is suitable for the RAM data reliability reinforcement of the SRAM type FPGA.

Description

technical field [0001] The invention relates to a RAM data reliability strengthening device and method based on an SRAM type FPGA. Background technique [0002] With the continuous development of satellite technology and applications, people urgently need to shorten the development cycle of satellites while reducing satellite costs and risks, and small satellite technology has emerged as the times require. [0003] SRAM-type FPGA has been widely used in the aerospace field due to its high integration, good flexibility, repeated programming, low development cost, and high density. However, SRAM-type FPGA is a volatile memory that is vulnerable to single event flips Impact. A single event upset may cause a change in the state of memory data, thereby causing errors in the instructions or data of the on-board computer system, and in severe cases may lead to the collapse of the entire on-board computer system. [0004] In the design of the spaceborne computer system, not only t...

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Problems solved by technology

[0006] The present invention aims to solve the problem of high cost and poor versatility of the anti-radiation technology reinforcement method existing in the existing memory reinforcement method; the three-mode redundancy method of the memory will increase hardware overhead, and is not suitable for volume, quality and power consumption requirements. Higher occasions; EDAC can protect data through codec, but there is a problem of poor reliability, and the write-back operation after correcting the wrong data will reduce the access speed of the memory. A SRAM-based FPGA is proposed. On-chip or off-chip RAM data reliability reinforcement device and method

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