Zentel Japan Corporation

Mitsuru Yoneyama

Takashi Kubo

Masaru Haraguchi

Bunsho Kuramori

Akihiro Hirota

Jun Setogawa

Hironori Iga

Mineo Noguchi

Masahiro Ishihara

A semiconductor memory device is provided with a row control circuit, in order to dissolve a Row Hammer issue. The row control circuit is configured to: (A) latches one of (a) a target address upon issuing of an ACTIVE command to the semiconductor memory device, and (b) a row address of a victim cell in which data of a memory cell is affected by the target address, as a victim address by using a predetermined row address latch method; and then, (B) refreshes the victim cell having the victim address by a predetermined refresh method upon issuing of a REFRESH command.

Semiconductor memory device for preventing occurrence of row hammer issue

Growing community of inventors

Tokyo, Japan

Mitsuru Yoneyama