7.5 MFLIPS FUZZY MICROPROCESSOR USING SIMD AND LOGIC-IN-MEMORY STRUCTURE

A fuzzy microprocessor is developed using 1.2 mum CMOS process. The in ference scheme for the if-then fuzzy rules consists of three main step s i.e. if-part process, then-part process and defuzzification. In orde r to realize very high-speed inference and moderate programmability, w e introduce three-type different structures i.e. SIMD, logic-in-memory and Wallace tree structures which are suitable for the three main ste ps. The inference speed including defuzzification is 7.5 MFLIPS which is 12.9 times higher than the previous VLSI implementation, and it can carry out many rules (960 rules) and many input and output variables (16 variables).