FPGA-RR: A Novel FPGA Architecture with RRAM-Based Reconfigurable Interconnects

In this paper we introduce a novel FPGA architecture with RRAM-based reconfiguration (FPGA-RR). This architecture focuses on the redesign of programmable interconnects, the dominant part of FPGA. By renovating the routing structure of FPGA using RRAMs, the architecture achieves significant benefits concerning area, performance and energy consumption. The implementation of FPGA-RR can be realized by the existing CMOS-compatible RRAM fabrication process. A customized CAD flow is provided for FPGA-RR, with an advanced P&R tool named VPR-RR developed for FPGA-RR to deal with its novel routing structure. We use the flow to verify the benefits of area, performance and power of FPGA-RR over the 20 largest MCNC benchmark circuits. Results show that FPGA-RR achieves 6.82x area savings, 3.09x speedup and 4.33x energy savings