Apparatuses and methods for implementing partitioning in memory cards and modules where conventional memory cards or modules have only a single partition. A representative memory card/module in accordance with the invention includes a memory device(s), and a memory interface which includes a data bus, a command line and a clock line. The memory card/module further includes a memory controller coupled to the memory device(s) and to the memory interface. The memory card/module includes means for controlling the partitioning of the memory device(s), and the memory controller is configured to operate the memory device(s) in accordance with the partition information.