A memory system includes a non-volatile memory device including a machine learning (ML) module and a peripheral power management integrated circuit (IC), and a memory controller configured to command the non-volatile memory device to enter an idle mode by providing an external power command to the non-volatile memory device. The machine learning (ML) module configures a neural network and trains the neural network via machine learning, and the peripheral power management IC is configured to generate an internal power command that is different from the external power command based on the external power command and monitoring information corresponding to the ML module.