INTEGRATION OF CO-ALU AND MULTIPLIER WITH 8-BIT CONTROLLER USING VHDL AND RECONFIGURABLE HARDWARE

The 8-bit microcontroller with their growing demand in different areas of applications as medical, consumer appliances, smart metering, ATMs, vending machines, with small modifications in the hardware architecture, they are performing efficiently in terms of operation throughput and power consumption. This paper presents the integration of 16-bit co-operative ALU and 8-bit multiplier to 8-bit controller using VHDL. The goal of this research was to improve the computability of the 8-bit controller by creating a VHDL model with C-ALU and multiplier. This research presents a novel implementation of hybrid 8-bit controller design, which can process mixed size data operations efficiently by utilizing multiple ALUs in single data path. For the implementation of 8-bit controller with C-ALU and multiplier, the selected hardware platform is the SPARTAN-7 device family XC7K160T-3FBG676E FPGA. Maximum clock frequency achieved on the selected device is 31.15 MHz rather than 20 MHz of the original controller. The average performance 71% is improved in multi-byte operational cases.