The PX5 RTOS is an advanced, 5th-generation RTOS that features a native implementation of the industry standard POSIX pthreads API as well as best-in-class size and performance. As for safety and security, the PX5 RTOS provides unique Pointer/Data Verification (PDV) technology which developers can leverage at run time to verify function return addresses, function pointers, system objects, global data, and memory pools. The PX5 RTOS is available today on the full range of the RA family of 32-bit MCUs.


  • Advanced, simple to use 5th generation RTOS
  • Native implementation of the POSIX pthreads API instantly enables developers and makes firmware more portable
  • The small footprint enables multi-threading in memory-constrained environments
  • Low overhead and fast execution returns more cycles to the developer while reducing power
  • Enhanced safety and security via unique Pointer/Data Verification (PDV) (patent pending)



  • Automotive
  • Industrial IoT
  • Smart cities
  • Smart homes
  • Smart sensors
  • Consumer electronics


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PDF 573 KB Product Brief
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