Dual Chip Approach to Radiation Hardened Logic

We wish to offer users nearly ASIC density (20X higher logic density than FPGAs), yet allow them to develop their systems with off-the-shelf FPGA-based parts. The core idea is to use a new high-density non-rad-hard FPGA for development, and an electrically and timing equivalent, rad-hard by design (RHBD) Structured ASIC in the same package for flight. This is much like using commercial Actel FPGAs for development, and their rad-hard versions for flight. Users would develop their systems with our FPGAs, and later replace them with factory-programmed rad-hard structured ASICs for flight, with close to zero risk of conversion problems.