NONVOLATILE MEMORY AND CONTROLLING METHOD THEREOF

摘要

PURPOSE: A nonvolatile memory and a controlling method thereof are provided to improve the reliability of a program operation by controlling the increment of program voltages. CONSTITUTION: The application number of program voltages applied to a selected word line is counted in a first program operation(S210). An increment between the program voltages for a second program operation is controlled according to the counted value before the second program operation is performed in the selected word line(S220). The second program operation is performed by applying the gradually increased program voltages to the selected word line(S230).