Patent ID: 11967385
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A semiconductor storage device comprising:
a first memory chip that includes a first memory cell, a first word line connected to the first memory cell, a first voltage step-up circuit, and a second voltage step-up circuit; and
a second memory chip that includes a second memory cell, a second word line connected to the second memory cell, a third voltage step-up circuit, and a fourth voltage step-up circuit, wherein
during a first read operation executed in the first memory chip, the first voltage step-up circuit, the second voltage step-up circuit, and the fourth voltage step-up circuit supply a first voltage to the first word line, and
when a voltage of the first word line reaches a predetermined voltage, the first voltage step-up circuit continues to supply the first voltage to the first word line, and the second voltage step-up circuit and the fourth voltage step-up circuit stop supplying the first voltage to the first word line.