2.1 Reliability

IGLOO 2 Flash-based fabric has zero FIT configuration rate due to its SEU immunity, which is critical in reliability applications. The Flash fabric also has the advantage that no external configuration memory is required, making the device instant-on; it retains configuration when powered off. To complement this unique FPGA capability, IGLOO2 devices add reliability to many other aspects of the device. SECDED protection is implemented on the embedded SRAM (eSRAM), and is optional on the DDR memory controllers. This means that if a one-bit error is detected, it is corrected automatically. If more than one-bit errors are detected, they are not corrected. SECDED error signals are brought to the FPGA fabric to allow the user to monitor the status of these protected internal memories. Other areas of the architecture are implemented with latches, which are more resistant to SEUs. Therefore, no correction is needed in DDR bridges such as HPMS, MDDR, and FDDR, SPI, and PCIe FIFOs.