Patent ID: 11875865
Assignee: MICRON TECHNOLOGY, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. An apparatus, comprising:
a block of memory cells comprising a plurality of memory strings; and
a memory sub-system reliability component coupled to the block of memory cells, wherein the memory sub-system reliability component is to:
assign a first select gate and a second select gate of a memory string of the plurality of memory strings a respective first select gate programmed reliability rank and a second select gate programmed reliability rank based upon respective programmed threshold voltages for the first select gate and the second select gate, wherein the programmed reliability ranks indicate that hot data, warm data, or cold data, or any combination thereof are programmable to the memory string;
increment a quality characteristic count for the first select gate and the second select gate to a first check voltage value;
determine a first select gate first checked threshold voltage and a second select gate first checked threshold voltage at the first check voltage value;
compare the first select gate first checked threshold voltage and the second select gate first checked threshold voltage to determine that the first select gate and the second select gate have a common first checked threshold voltage reliability; and

assign the first select gate and the second select gate a first reliability rank based upon the first checked threshold voltage, wherein the first reliability rank indicates that the warm data or the cold data, or both, are programmable to the memory string.