TSC696E: a SPARC V8 processor with SEU protection built-in architecture

Computer Science

Scientific paper

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Scientific paper

To fulfill the always increasing computing power required by airborne equipment's, ESA has carried out the development of the LEON, a SPARC v8 processor. This device, available as a soft macro, is commonly targeting commercial and space markets. Therefore, to resist against radiation inherent to space environment, its design is highly configurable so as SEU protection mechanisms can be implemented without significant penalty. The work described in this paper presents the design by Atmel(1) of a 0.35μm technology demonstrator implementing the Fault Tolerant version of the LEON aiming at the validation of the SPARC standard compliance as well as SEU protection efficiency verification. Both functional validation and radiation results are reviewed with special attention to SEU induced errors circumventing actions.

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