Relations of machine codes and EMI behaviours

This paper discusses about EMI behaviors of a simple microcontroller under different machine code combinations. It´s known that a microcontroller has different EMI behaviors under different machine code sequences. To the best of our knowledge, little research addresses its attention on the relationship between the machine code sequence and the EMI behaviors. In this paper, we try to find it by theoretical deduction and measurement verification. From the me asured result, the deduction is able to predict the EMI behavior for several machine codes. This research can be the foundation of software- level EMI optimization techniques.