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In this paper, a novel reconfigurable architecture, rFPGA, is developed by utilizing high-density resistive memory (RRAM) circuits as FPGA components. Different from the existing CMOS-nano hybrid FPGAs that use crossbars, rFPGA mainly consists of 1T1R RRAM structures (1 CMOS transistor is integrated with a two-terminal resistive nanojunction) that can be fabricated using an efficient CMOS-compatible process. These 1T1R structures can significantly improve the FPGA memory and routing circuits, and enable rFPGA to achieve at least a 2X density enhancement along with 10% delay and power reduction, compared to the corresponding CMOS FPGA.
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