An assessment of single-particle effect in SRAM-based combinatorial coding

摘要

In the space radiation environment, there are various cosmic rays and high-energy particles, which causing memory soft errors in memories. This is the single-particle flip effect, which is an important factor. It reduces the reliability of data transmission. In the radiation hardened design, the use of error correcting codes for reinforcement is an effective way to mitigate the single particle effect. In this paper, we analyze the bit error rate (BER) of the space and two major codings -Hamming code and BCH code. These two codings are employed to harden Static RAMs (SRAMs). These two codings' space stability and resource consumption in specific spatial conditions is studied. These analysis results can be used to select an appropriate coding for SRAM reinforcement, and choose an appropriate SRAM refresh time in different space environment.