1. A semiconductor device comprising: a memory device including various types of memory units configured to be installed in one slot; a host configured to store memory characteristic information of the various types of memory units contained in the memory device, process a signal for the memory units on the basis of the memory characteristic information, and transmit and receive the processed signal to and from the memory units; and an interface configured to allow the host to interface with the various types of memory units contained in the memory device, wherein the host generates the memory characteristic information for each channel among a plurality of channels, generates an AC parameter on the basis of the memory characteristic information, and stores the AC parameter.