MicroSemi (now part of Microchip) makes some low-power FPGAs. Xilinx has made the coolrunner CPLDs for years that are mighty low-power (they're not huge, but o

MicroSemi (now part of Microchip) makes some low-power FPGAs. Xilinx has made the coolrunner CPLDs for years that are mighty low-power (they're not huge, but often are big enough for some needed extra logic.). (Another not care too much about power is Military.)