This is a information related post. I have tried to check whether N76E003 can be programmed through the Arduino IDE. I have found that it is not supported right now. However, NuMaker UNO is a board that is a M-series Cortex based processor available that only can be programmed through IDE in nuvoton controller segment.
If anybody have a idea about how to change the M-series Cortex configuration and cpp files for programming such 8051 based microcontroller, kindly drop a feedback.