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

Claim 0:
1. A non-volatile storage apparatus, comprising:
non-volatile memory cells;
word 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 is capable of outputting a plurality of output voltages such that a first subset of the set of regular control gate drivers are configured to output a first plurality of output voltages and a second subset of the set of regular control gate drivers are configured to output a second plurality of output voltages, the first plurality of output voltages includes one or more different voltages than the second plurality of output voltages;
a plurality of switches connected to the word lines and the regular control gate drivers;
a redundant control gate driver connected to the plurality of switches, the redundant control gate driver is configured to output the first plurality of output voltages and the second plurality of output voltages, the plurality of switches are configured 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; and
a control circuit connected to the set of regular control gate drivers, the redundant control gate driver, and the plurality of switches;
the control circuit is configured to operate 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;
the control circuit is configured to automatically detect that a particular regular control gate driver of the set of regular control gate drivers is defective and operate the redundant control gate driver and the plurality of switches to replace the particular regular control gate driver with the redundant control gate driver.