US 11,705,201 B2
Log data storage for flash memory
Paolo Papa, Naples (IT); Luigi Esposito, Piano di Sorrento (IT); Massimo Iaculo, San Marco Evangelista (IT); Eric Kwok Fung Yuen, Dublin, CA (US); and Gerard J. Perdaems, Boise, ID (US)
Assigned to Micron Technology, Inc., Boise, ID (US)
Filed by Micron Technology, Inc., Boise, ID (US)
Filed on Aug. 23, 2021, as Appl. No. 17/409,413.
Application 17/409,413 is a continuation of application No. 15/690,889, filed on Aug. 30, 2017, granted, now 11,100,996.
Prior Publication US 2021/0383872 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 12/00 (2006.01); G11C 16/10 (2006.01); G06F 3/06 (2006.01); G06F 11/07 (2006.01); G11C 16/04 (2006.01)
CPC G11C 16/10 (2013.01) [G06F 3/0604 (2013.01); G06F 3/064 (2013.01); G06F 3/0619 (2013.01); G06F 3/0643 (2013.01); G06F 3/0659 (2013.01); G06F 3/0679 (2013.01); G06F 11/079 (2013.01); G06F 11/0727 (2013.01); G06F 11/0778 (2013.01); G11C 16/0483 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for managing flash memory, the method comprising:
receiving a first program request comprising first host data to be written to the flash memory, the flash memory comprising a number of storage units, a first storage unit of the number of storage units comprising a first set of storage sub-units, and a second storage unit of the number of storage units comprising a second set of storage sub-units;
determining that the first host data can be written to the first storage unit with at least a portion of the first set of storage sub-units of the first storage unit left over;
in response to determining that the first host data can be written to the first storage unit with at least the portion of the first set of storage sub-units left over, generating a first program data unit, the first program data unit comprising the first host data and first log data describing the flash memory;
programming the first program data unit to the first storage unit of the flash memory;
receiving a second program request comprising second host data to be written to the flash memory;
determining that the second host data cannot be written to the second storage unit with at least a portion of the second set of storage sub-units left over; and
in response to determining that the second host data cannot be written to the second storage unit with at least the portion of the second set of storage sub-units left over, programming the second host data to the second storage unit of the flash memory.