Patent ID: 11894074
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. The device of claim 2, wherein
the states include a sixth state and a seventh state, a memory cell transistor whose threshold voltage is included in the sixth state stores sixth data, and a memory cell transistor whose threshold voltage is included in the seventh state stores seventh data,
where at least a fourth condition, a fifth condition and a sixth condition are satisfied in the repetition of the program loop, the controller is configured to set a memory cell transistor to which the fifth data is to be written as the second program target,
the fourth condition is that a threshold voltage of the memory cell transistor to which the sixth data is to be written does not exceed a verify high voltage,
the fifth condition is that a verify low voltage of the sixth data is not determined as being exceeded in an immediately preceding program loop, and
the sixth condition is that a number of memory cell transistors that have passed a verify of the seventh data is equal to or greater than a second number in a current program loop.