I am planning to use MPC5777C for my control system application.What is the life of the part,whether it can be available for next 20 years.
Whether this part supports RTOS/VxWorks.
the lifetime is 15 years. After that it is possible according to market orders for this device.
Yes its supports OSses (AUTOSAR OS, FreeRTOS)
VxWorks I have no info - probably no. You could consult it with WindRiver.