MEMORY SYSTEM WITH SWITCHABLE OPERATING BANDS

An aspect includes determining a configuration change to at least one memory device of a memory system. A band switch enable command is sent from a memory controller to the at least one memory device indicating the configuration change. One or more internal circuits of the at least one memory device are set into a quiescent mode based on receiving the band enable command. One or more of a voltage and a frequency of the at least one memory device are adjusted to implement the configuration change. A band switch disable command is sent from the memory controller to the at least one memory device based on completing the adjusting. The one or more internal circuits are enabled to operate using the adjustment based on receiving the band switch disable command from the memory controller.