Patent ID: 11862218
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 13:
14. A method for reading from an MTJ memory device, comprising:
providing a magnetic tunnel junction (MTJ) current path and a reference current path in parallel with the MTJ current path, wherein the MTJ current path comprises an MTJ memory cell connected in series with a first non-linear resistance device, wherein the MTJ cell is electrically connected to three access lines, and wherein the first non-linear resistance device is electrically isolated from one of the three access lines;
enabling the MTJ current path and the reference current path by applying a signal to a read enable circuit;
providing a reading bias to generate an MTJ current through the MTJ current path and to generate a reference current through the reference current path; and
comparing the reference current and the MTJ current to generated a digital signal indicating a data state of the MTJ memory cell.