No need to go all hyper on fear of a human like brain anytime soon. In order to put it on a chip, you need to have an adequate model of the human brain. Neuroscience is no where near where it needs to be. This is why AI has largely stalled. We were supposed to have androids walking amongst us by now, according to the predictions of the AI community in the 1960’s. They have grossly underestimated what it takes to model the brain.
Once the model is made, creating the hardware is easy. The problem is with the definitions of “human” action and thought that the neuroscientists are using.
Basic philosophical principle: You can’t give what you don’t have. We do not have a good understanding of “understanding”. Most people walking around today have no idea what their purpose in the world is, so I doubt a few scientists could give that ability to a machine.
The only reason that a Skynet may happen is because whoever programs it would have put that seed in there. It would not be able to determine it’s own purpose. Even our children will not see anything more complex that the pint-size companion from the 1984 Buck Rogers TV series.