Patent ID: 11968843
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 8:
9. A system, comprising:
an integrated circuit chip, the integrated circuit chip having:
a processing core integrated into the chip;
magnetoresistive random access memory (MRAM) circuitry integrated into the chip, the MRAM circuitry including a plurality of MRAM cells organized into a plurality of MRAM memories, including at least one cache memory, and at least one main memory;
a first addressing circuit positioned in close proximity to a first region of the plurality of MRAM cells and coupled to the first region of the plurality of MRAM cells via a first set of memory control lines, the first region of the plurality of MRAM cells implementing the at least one cache memory, the first addressing circuit corresponding to the first region of the plurality of MRAM cells; and
a second different addressing circuit positioned in close proximity to the second region of the plurality of MRAM cells and coupled to the second region of the plurality of MRAM cells via a second set of memory control lines, the second region of the plurality of MRAM cells implementing the at least one main memory, the second addressing circuit corresponding to the second region of the plurality of MRAM cells, and the second addressing circuit different from the first addressing circuit;

a functional circuit; and
a system bus, which, in operation, communicatively couples the functional circuit to the integrated circuit chip,
wherein a MRAM cell of the plurality of MRAM cells includes a fixed layer, a free layer and a tunnel barrier layer between the fixed layer and the free layer, the free layer coupled to a first source or drain terminal of a control transistor through a metal layer, the fixed layer coupled to a bit line; and

wherein a second source or drain terminal of the control transistor is coupled to a sense line and a gate of the control transistor is coupled to a write line.