In an approach to activating at least one memory core circuit of a plurality of memory core circuits in an integrated circuit, one or more computer processors activate a clock signal of a currently selected memory core circuit. The one or more computer processors activate the clock signal of a previously selected memory core circuit to allow the previously selected memory core circuit to be set to a deselected operating mode. The one or more computer processors forward an output bit generated by a memory core circuit selected from a plurality of memory core circuits to a multiplexed bit line.