Patent ID: 11915786
Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 19:
20. A method for operating a memory device, the memory device comprising an array of memory cells comprising a plurality of columns of memory cells, and a plurality of bit lines respectively coupled to the plurality of columns of memory cells, the method comprising:
performing a bit line discharge operation on the plurality of bit lines, comprising:
providing a discharge current to the plurality of bit lines; and
electrically coupling the plurality of bit lines to a ground voltage source through a first transistor and a second transistor by turning on the first transistor comprising a gate terminal that is connected to a reference current generator and turning on the second transistor that is connected between the first transistor and the ground voltage source to discharge the plurality of bit lines with the discharge current, wherein:

the reference current generator collaborates with the first transistor to establish a current mirror, and the discharge current matches, through the current mirror, a reference current provided by the reference current generator; and
the discharge current of the plurality of bit lines sequentially flowing from the plurality of bit lines to the first transistor, the second transistor, and the ground voltage source.