In one form, a memory controller includes a controller and a memory operation array. The controller has an input for receiving a power state change request signal and an output for providing memory operations. The memory operation array comprises a plurality of entries, each entry comprising a plurality of encoded fields. The controller is responsive to an activation of the power state change request signal to access the memory operation array to fetch at least one entry, and to issue at least one memory operation indicated by the entry. In another form, a system comprises a memory system and a processor coupled to the memory system. The processor is adapted to access the memory module using such a memory controller.