Memory device including memory package and memory system including the memory device

Abstract

A memory system includes a memory device and a memory controller for providing data to the memory device based on a clock signal. The memory device includes a first memory group; a second memory group; an internal clock generator for generating a first internal clock signal and a second internal clock signal, which respectively correspond to a first period and a second period of the clock signal; and a data distributor for providing the data respectively to the first memory group and the second memory group, based on the first internal clock signal and the second internal clock signal.