Semiconductor memory device for independently selecting mode of memory bank and method of controlling thereof

Abstract

A semiconductor memory device in which a mode of a memory bank may be independently selected and a method of controlling the semiconductor memory device may be provided. The semiconductor memory device with a plurality of banks may include a plurality of bank groups that each may have at least one bank from among the plurality of banks, and a memory controller that may control a read/write operation to be performed on a bank belonging to a bank group from among the plurality of bank groups, in response to a control signal, where different modes or the same mode may be applied to the bank groups. Accordingly, different modes or the same mode may be applied to the banks so that the read/write operation may be performed on a bank having a mode that is advantageous to the type of data, thereby minimizing consumption of power and a time delay.