Optically Reconfigurable Gate Array with a Triple Modular Redundancy
Space systems require radiation hardened devices with high soft error tolerance and high total ionizing dose tolerance. An optically reconfigurable gate array (ORGA) with over 400 Mrad total ionizing dose has been developed. The total ionizing dose tolerance of the ORGA is 400 times higher than currently available radiation hardened devices. Moreover, the ORGAs can support high speed scrubbing of configuration memory so that soft errors on configuration memory can be ignored during operations. However, soft errors that arise on the programmable gate array side must be removed. Therefore, this paper presents a new ORGA VLSI with a triple modular redundancy gate array structure that can completely remove soft errors on its programmable gate array.
2019 6th International Conference on Space Science and Communication (IconSpace)