Standby current reduction in memory devices

A method of controlling a memory device can include: determining, by the memory device, a time duration in which the memory device is in a standby mode; automatically switching the memory device from the standby mode to a power down mode in response to the time duration exceeding a predetermined duration; exiting from the power down mode in response to signaling from a host device via an interface; and toggling a data strobe when data is ready to be output from the memory device in response to a read command from the host device.