Patent ID: 11928355
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. The method for determining mismatch of the sense amplifier of claim 5, wherein determining the second signal threshold comprises:
keeping a voltage on a capacitor plate in the first memory cell unchanged, changing a voltage on a third plate of a capacitor in the second memory cell, and obtaining a number of failed bits in the second memory under influence of different voltages; wherein, a fourth plate of the capacitor in the second memory cell is connected to a source of a transistor in the second memory cell, and the third plate is arranged opposite to the fourth plate; and
when the number of failed bits reaches a preset allowable number of failures, determining a voltage variation on the second bit line during the read operation of the second memory cell as the second signal threshold.