A memory controller includes: a first buffer configured to receive a memory request from a host and store therein the received memory request; a command generator configured to generate a first command corresponding to the memory request, and set a type of the first command indicating whether an address comprised in the memory request corresponds to a processing in memory (PIM) memory; a second buffer configured to store therein a plurality of commands comprising the first command; and a command scheduler configured to determine whether to change an order of the first command stored in the second buffer based on the type of the first command.