The principle of the internal resistance of the chip is mainly achieved by forming a layer of polysilicon film on the surface of the silicon base. Due to the high resistance of the silicon material itself, the resistance value of the polycrystalline silicon resistance is larger. In addition, the resistance on the chip can also achieve different functions through different processes and designs.
In integrated circuits, resistance is usually used to control the flow of current and the distribution of voltage, playing a role in limiting and regulating the current. These resistive materials have resistive properties, which can have the effect of obstructing the flow of current when the current passes through, so that the current is limited.
I hope the above information will be helpful in answering your questions.