Patent ID: 11914086
Assignee: KIOXIA CORPORATION
Field: Environmental technology (Chemistry)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A semiconductor memory device comprising:
a first memory module mounted on a first substrate electrically connected to a first connection interface, the first memory module including a plurality of first memory chips that are vertically stacked on top of one another and mounted on the first substrate, each of the first memory chips including a plurality of vertically-stacked and non-volatile first memory cells;
a second memory module mounted on a second substrate that is above the first memory module and electrically connected to a second connection interface, the second memory module including a plurality of second memory chips that are vertically stacked on top of one another and mounted on the second substrate, each of the second memory chips including a plurality of vertically-stacked and non-volatile second memory cells; and
a controller electrically connected to the first and second connection interfaces and configured to control reading and writing of data from and to the non-volatile memory chip and detect gamma rays according to a data inversion or a threshold voltage change of at least some of non-volatile memory cells in the first and second memory modules.