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대한전자공학회 전자공학회논문지-A 전자공학회논문지 A편 제33권 제11호
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2,287 - 2,298 (12page)

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초록· 키워드

In this study, we designed the routing structure and logic block of a SRAM cell-based FPGA with symmetrical-array architecture. The designed routing structure is composed of switch matrices, routing channels and I/O blocks, and the routing channels can be subdivided into single length channels, double length channels and global length channels. The interconnection between wires is made through SRAM cell-controlled pass transistors. To reduce the signal delay in pass transistors, we proposed a scheme raising the gate-control voltage to 7V. The designed SRAM cells have built-in shift register capability, so there is no need for separate shift registers. We designed SRAM cells in the LUTs (Look-Up Tables) to enable the write operations to be performed synchronously with the clock for ease of system application. Each logic block (LFU) has four 4-input LUTs, flip-flops and other gates, and the LUTs can be used as SRAM memory. The LFU also has a dedicated carry logic, so a 4-bit adder can be implemented in one LFU. We designed our FPGA using 0.6μm CMOS technology, and simulation shows proper operation of a 4 bit counter at 100MHz.
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UCI(KEPA) : I410-ECN-0101-2009-569-013277540