Patent ID: 11908521
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 17:
18. A non-volatile storage apparatus, comprising:
a non-volatile memory structure comprising non-volatile memory cells, word lines connected to the non-volatile memory cells and bit lines connected to the non-volatile memory cells;
a set of regular control gate drivers, each regular control gate driver of the set of regular control gate drivers receives multiple different sources of voltage and comprises multiple voltage paths including a different voltage path connected to each of the received multiple different sources of voltage;
a plurality of switches connected to the word lines and the regular control gate drivers, each control gate driver of the set of control gate drivers is connected to only a subset of the word lines via the plurality of switches;
a redundant control gate driver connected to the plurality of switches, the redundant control gate driver is connected to all of the word lines and selectively in electrical communication with a selectable subset of the word lines;
a control circuit connected to the set of regular control gate drivers, the redundant control gate driver, the bit lines and the plurality of switches; and
a data structure separately indicating whether each voltage path of each control gate driver of the set of control gate drivers is defective, the control circuit is configured to operate the redundant control gate driver and the plurality of switches to selectively replace any one of the regular control gate drivers of the set of regular control gate drivers with the redundant control gate driver based on the data structure.