Forum Discussion

SajjaSiva's avatar
SajjaSiva
Icon for New Contributor rankNew Contributor
7 years ago

Hi, we are using Cyclone II EP2C50 series FPGAs for one of the control product. We are using CRAM CRC check inbuilt feature for any SEU, It is observed in recent years the CRC errors got increased.

This FPGA is used in module with proper grounded metal casing and controlled environment w.r.t atmosphere (there almost four layers metallic enclosures from sun expose). Really doubt can cosmic rays ...
SajjaSiva's avatar
SajjaSiva
Icon for New Contributor rankNew Contributor
7 years ago

Hi,

This is happening on device, which is in service for years. Almost 50 failures are observed in a span of two years, which are in service for last 10 years to 2 months old installations. Interested to know what are all possible reasons for SEU (FPGA CRAM CRC error), is there any trend shows increase of such failures in recent years (from other Altera Cyclone II chips users).

Regards,

Sajja.Siva