Patent ID: 11934701
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. The storage controller as claimed in claim 18, wherein the plurality of distribution types include:
a normal type indicating that memory cells of the memory region are programmed normally;
a retention type indicating that threshold voltages of the memory cells of the memory region decrease over time;
a read disturb type indicating that a threshold voltage distribution of a second word line adjacent to a first word line in the memory region is changed depending on a read operation of the first word line;
a pre-programming type indicating that only pre-programming of the pre-programming and post-programming is performed in the memory region;
a one-shot type indicating that one-shot programming is performed in the memory region;
a hot-carrier injection (HCI) type indicating that a threshold voltage distribution is changed due to the HCI in the memory region;
a no-coupled word line (NCW) type indicating that threshold voltage distributions are formed to be generally low as programming is not performed on adjacent word lines in the memory region;
a sudden power off (SPO) type indicating that programming of the memory region is performed abnormally by the SPO; and
an erase type indicating that the memory cells of the memory region are not yet programmed.