Programmable synthesis of multi-valued multi-threshold functions for implementation using charge-coupled devices

Abstract

The use of programmable logic array structures for the implementation of multi-valued multi-threshold (MVMT) functions using charge-coupled device technology is considered. Two new such structures for the implementation of MVMT functions are introduced. The number of functions realized using these structures is shown to be larger than those realized using previously proposed structures. The new structures are dynamically reprogrammable at the user level by controlling the thresholds of the gates used. One of the proposed structures is superior to the other in terms of the number of functions realized per one column. However, this increase in functionality is achieved at the expense of increasing the number of gates per column by 50%.