US 12,422,996 B2
Controller for controlling one-time programmable memory, system, and operation method thereof
Ja Hyun Koo, Icheon (KR)
Assigned to SK hynix Inc., Icheon (KR)
Filed by SK hynix Inc., Icheon (KR)
Filed on Oct. 11, 2022, as Appl. No. 18/045,753.
Claims priority of application No. 10-2022-0061328 (KR), filed on May 19, 2022.
Prior Publication US 2023/0376211 A1, Nov. 23, 2023
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0614 (2013.01) [G06F 3/0644 (2013.01); G06F 3/0679 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A controller comprising:
an e-fuse memory including a plurality of e-fuse memory cells; and
a control device configured to:
group the plurality of e-fuse memory cells into a plurality of e-fuse segments each having a given size; and
set a plurality of e-fuse flags, each of the plurality of e-fuse flags indicating whether data is programmed in a respective one of the plurality of e-fuse segments,
wherein the plurality of e-fuse segments include a first e-fuse segment and a second e-fuse segment, and
wherein the control device is further configured to:
program a target address into the first e-fuse segment; and
program data to be stored in a specific location into the second e-fuse segment to store the programmed data as target data, the specific location being indicated by the target address.