Is it possible to simulate working of an electronic circuit, that uses a micro controller, in simulink?

I have circuit that uses micro-controller. I have code for the micro-controller. But I am not sure whether it will work or not. Before going for the actual hardware I want to simulate the whole circuit (micro-controller + rest all components). Such that, I can try different programs on the micro controller till I get the desired output. Is this possible in simulink?