Method for generating multi-level signal and method for transmitting data based on multi-level signal

Abstract

The invention provides a method for generating a multi-level signal and a method for transmitting data based on the multi-level signal. The method for generating the multi-level signal having one of three or more voltage levels that are different from each other comprises the steps: performing a first voltage setting operation in which first and second voltage intervals are adjusted to be different from each other, wherein the first voltage interval represents a difference between a first pair of adjacent voltage levels and the second voltage interval represents a difference between a second pair of adjacent voltage levels; performing a second voltage setting operation in which a voltage swing width is adjusted, the voltage swing width representing a difference between a lowest and a highest voltage level among the three or more voltage levels; and generating an output data signal that is the multi-level signal based on input data including two or more bits, a result of the first voltage setting operation and a result of the second voltage setting operation.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2020-0105477 filed with the Korean Intellectual Property Office (KIPO) on Aug. 21, 2020, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0002] Example embodiments of inventive concepts relate to semiconductor integrated circuits, and more particularly, to methods of generating multi-level signals and methods of transmitting data using the methods of generating multi-level signals. Background technique [0003] Generally, semiconductor memory devices are classified into two categories according to their ability to retain stored data in the absence of power. These categories include volatile memory devices, which lose stored data when power is lost, and non-volatile memory devices, which retain memory data even when power is not supplied. Volatile memory devices can perform read and write operations at high speeds, but data stored therein can be lost w...

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