US 12,224,027 B2
Memory system and information processing system for testing storage areas of nonvolatile memory
Masayoshi Sato, Yokohama (JP)
Assigned to Kioxia Corporation, Tokyo (JP)
Filed by Kioxia Corporation, Tokyo (JP)
Filed on Sep. 7, 2022, as Appl. No. 17/939,180.
Claims priority of application No. 2022-041506 (JP), filed on Mar. 16, 2022.
Prior Publication US 2023/0298684 A1, Sep. 21, 2023
Int. Cl. G11C 29/46 (2006.01); G11C 29/12 (2006.01); G11C 29/18 (2006.01)
CPC G11C 29/46 (2013.01) [G11C 29/1201 (2013.01); G11C 29/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A memory system comprising:
a nonvolatile memory that includes storage areas; and
a controller configured to control the nonvolatile memory, wherein
the storage areas include at least a first storage area for which a test related to a write operation and a read operation has been executed before shipment of the memory system, and a second storage area for which the test has not been executed before the shipment of the memory system, and
the controller is configured to:
manage first test information and second test information, the first test information including status information indicating that the test for the first storage area has been executed before the shipment of the memory system, the second test information including status information indicating that the test for the second storage area has not been executed before the shipment of the memory system;
in response to receiving, from a host, a command to acquire information related to the second storage area, transmit the second test information that corresponds to the second storage area to the host;
when execution of the test for the second storage area is requested by the host, execute the test for the second storage area; and
when the test for the second storage area has been completed, update the status information of the second test information with a first value indicating that the test for the second storage area has been executed.