Time limited device programming

The only use of time limited cores is for you to test and have flavour of the core free of charge and for the vendor to make money once you decide to buy the proper nontime limited core.

It is a risky core, if for example it is left running in an aeroplane only to stop over the atlantic...

apparently they use a counter to measure time on your clk once you powerup

then terminate the function at the target count but who knows it might be buggy and work for good