METHODS FOR ASYNCHRONOUSLY SIGNALING UPDATED INFORMATION FROM A MEMORY DEVICE TO A HOST AND MEMORY DEVICES AND SYSTEMS EMPLOYING THE SAME

Memory devices, memory systems, and methods of operating memory devices and systems are disclosed in which a memory device can asynchronously indicate to a connected host that information in a mode register has been changed, obviating the need for repeated polling of the information and thereby reducing both command/address bus and data bus bandwidth consumption. In one embodiment, a memory device comprises a memory; a mode register storing information corresponding to the memory; and circuitry configured to, in response to the information in the mode register being modified by the memory device, generate a notification to a connected host device.