We also present the developed application mapping flow and crossbar programming method. This article reports 65 nm prototype fabrication results and predicted the performance of the VS-FPGA designed for AI applications. These features enable operation with high energy efficiency. Furthermore, since arithmetic units and memories for computing can be placed under the via-switch crossbar for routing, large-scale parallel operations can be realized where the memory and the arithmetic unit are adjacent to each other.
In via-switch FPGAs (VS-FPGAs), the via-switches required for reconfiguration are placed in the routing layer so that the entire transistor layer can be utilized for computing, and higher implementation density can be achieved compared to conventional SRAM FPGAs. We are developing field-programmable gate arrays (FPGAs) with a new non-volatile switch called via-switch.
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