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Valued Contributor III
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Single Event Upset

Hi  

 

I am designing a control system that is intended to be used in a safety critical system. I am aware that SEU affect FPGAs in the atmosphere but do they pose a threat at ground level and below ground level? 

Also can radio frequency cause any problems for FPGAs?  

 

I’m not sure if microcontrollers suffer from the effects of SEU? 

 

Any help or guidance would be greatly appreciated 

 

Thanks 

 

Steve
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Valued Contributor III
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All electronic components are susceptible to SEU's at some point. I suggest you read 

 

www.altera.com/literature/wp/wp-01135-stxv-seu-mitigation.pdf 

and 

www.altera.com/literature/wp/wp-01012.pdf 

 

In general, on the ground it's not a big deal, but in aircraft, and space, it's a significant concern. Flash based devices are more robust than ram based devices, so if you can fit the design in a flashed based CPLD, it would be less likely to have issues. (IE Max series) 

 

If you need more functionality than a CPLD, Actel (Now MicroSemi) makes flashed based and fuse based fpgas. They are on the smaller scale, but some of the fuse based guys are certified for space applications. 

 

Pete
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