Abstract: A method of reading data from a self-selecting memory includes generating a read pulse that has a polarity opposite to that of a write pulse. The write pulse writes data into a target memory cell in the self-selecting memory. The read pulse is applied to the target memory cell. The read pulse has a first edge that is a starting point of the read pulse and a second edge that is an ending point of the read pulse. A slope of the second edge of the read pulse is adjusted such that an undershoot or overshoot on the second edge of the read pulse increases.