Patent ID: 11862244
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method, comprising:
determining initial resistance-current curves of a plurality of phase change memory cells;
determining a target resistance-current curve for the plurality of phase change memory cells based on the initial resistance-current curves; and
modulating a first phase change memory cell of the plurality of phase change memory cells by applying a first stressing procedure on the first phase change memory cell until a modulated resistance-current curve of the first phase change memory cell meets the target resistance-current curve,
wherein the determining the target resistance-current curve includes:
applying a test stressing procedure on each of the plurality of phase change memory cells;
measuring test resistance-current curves of the plurality of phase change memory cells after the test stressing procedure has been applied; and
determining a resistance-current curve that requires a higher reset current than all the test resistance-current curves as the target resistance-current curve.