Abstract: In view of the current MCU requirements for embedded application development on real-time operating systems, it is proposed to use the GEC architecture, and implement the mbedOS operating system resident memory under the architecture, which proposes a reasonable division of Flash and RAM space design rules, and concludes The API dynamic link technology is used to implement the user program call interface program for programming, which realizes similar embedded programming and general computer programming, shortening the compile time and speeding up the development efficiency. Finally, the design experiments were carried out in S32K144 and MKL36Z64 respectively. The experiment shows that the technology is feasible.