A radiation hardened by design register file with lightweight error detection and correction

Karl C. Mohr, Giby Samson, Lawrence T. Clark

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A radiation hardened by design 32 × 36 b register file with error detection and correction (EDAC) capability is presented. The lightweight EDAC scheme (LEDAC) supports fine granularity (byte) writes, with low area and latency overhead, suitable for small, fast memories such as register file and first-level cache memory. The LEDAC scheme is described and its impact on memory efficiency and speed are quantified. The register file has been tested to be functional on a foundry 0.13 μm bulk CMOS process with a measured speed over 1 GHz at VDD = 1.5 V. The LEDAC scheme is implemented in an external FPGA. Accelerated heavy ion testing results are also described. The experimentally measured RHBD register file SEE behavior is examined, and the proposed LEDAC scheme is shown to alleviate all soft errors in accelerated testing.

Original languageEnglish (US)
Pages (from-to)1335-1342
Number of pages8
JournalIEEE Transactions on Nuclear Science
Volume54
Issue number4
DOIs
StatePublished - Aug 1 2007

Keywords

  • Error detection and correction (EDAC)
  • Radiation hardening
  • Register file

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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