A semiconductor memory device includes a memory array section configured to serve as an information storage area and an interface section configured to interface between an external memory controller and the memory array section. The memory array section and the interface section are sealed in a package. The interface section has a plurality of interface modules corresponding to a plurality of memory types on a one-to-one basis. The method includes the steps of: selecting one of the plurality of interface modules in accordance with the memory type complying with specifications of the external memory controller being connected; and causing the selected interface module to access the memory array section for either a write or a read operation in response to either a write or a read request issued by the external memory controller.