18882292. MEMORY SYSTEM AND MEMORY DEVICE (Kioxia Corporation)
MEMORY SYSTEM AND MEMORY DEVICE
Organization Name
Inventor(s)
Kazutaka Takizawa of Yokohama Kanagawa JP
Yuki Kamijo of Yokohama Kanagawa JP
Takehiko Amaki of Yokohama Kanagawa JP
Shohei Asami of Yokohama Kanagawa JP
Shunichi Igahara of Fujisawa Kanagawa JP
MEMORY SYSTEM AND MEMORY DEVICE
This abstract first appeared for US patent application 18882292 titled 'MEMORY SYSTEM AND MEMORY DEVICE
Original Abstract Submitted
A memory system according to one embodiment includes a memory device and a memory controller. The memory device includes memory cells. The memory controller executes a tracking operation. In the tracking operation, the memory controller is configured to cause the memory device to execute a plurality of times of read operations using a plurality of read levels. In the tracking operation, the memory controller is further configured to set a first voltage difference between two adjacent read levels of the read levels in a fourth voltage range lower than a first voltage in a third voltage range and a second voltage difference between two adjacent read levels of the read levels in a fifth voltage range higher than the first voltage in the third voltage range. The first and second voltage differences are different from each other.