US 12,287,708 B2
Automatic XOR data programming by memory die for uncorrectable page failure recovery
Anantharaj Thalaimalai Vanaraj, San Jose, CA (US); Sai Gautham Thoppa, San Jose, CA (US); and Dharmaraju Marenahally Krishna, Karnataka (IN)
Assigned to WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Jul. 31, 2023, as Appl. No. 18/362,197.
Claims priority of provisional application 63/509,004, filed on Jun. 19, 2023.
Prior Publication US 2024/0419554 A1, Dec. 19, 2024
Int. Cl. G06F 11/00 (2006.01); G06F 11/14 (2006.01)
CPC G06F 11/1451 (2013.01) [G06F 11/1435 (2013.01); G06F 11/1458 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A memory die comprising:
a controller operative to:
generate an exclusive OR (XOR) data page by performing an XOR operation between a first raw data page and a second raw data page,
generate a fixed content data page,
store the XOR data page on a first back-up data plane-data latch, and
store the fixed content data page on a second back-up data plane-data latch;
a raw data plane comprising:
a first raw data plane-data latch that stores the first raw data page, and
a second raw data plane-data latch that stores the second raw data page; and
a back-up data plane comprising:
the first back-up data plane-data latch that stores the XOR data page, and
the second back-up data plane-data latch that stores the fixed content data page.