Flexible FPGA Architecture realized of General Purpose SOG
K. Azegami, S. Kashiwakura, K. Yamashita · 1996
In this paper, we describe an FPGA of high realization method flexibility, using general purpose SOG (sea of gates) gate array. Realization method flexibility means that we can realize the architecture by any method of realization, i.e. gate arrays and full customs. FPGAs determine their functions from their programmed internal state circuit. For example, SRAM program FPGAs do so by setting values to SRAMS. Our FPGA also uses SRAM program memory, but not limited. We will show one example of realization using general purpose SOG gate arrays. Our test SOG FPGA has a capacity of 6.5Kgate on a 14mm x 14mm die, with less than 2ns propagation delay between local logic cells.