: XC70 (2.4 D 185CV), XC90 (2.4D 163CV), and others utilizing EDC15 and EDC16 control units.

Analysis and Application of NEC B58944 Datasheet

Why is this "hot"? Because in the world of 8-bit control loops, knowing that a specific bit-manipulation instruction takes four cycles versus five can mean the difference between a stable PID loop and a mechanical failure. The datasheet empowers the programmer to squeeze every ounce of performance out of the silicon, offering flag status details and stack pointer manipulations that are often glossed over in newer documentation.

A: Re-check the datasheet. It could be oscillating (parasitic oscillation) due to poor layout, or you may have a counterfeit with higher RθJC. Also, verify your heatsink’s thermal resistance matches the datasheet’s requirement.