Hitachi, Ltd.

Renesas Technology Corp.

Other

Hitachi Vlsi Engineering Corp.

Solid State Storage Solutions LLC

Hitachi Ulsi Engineering Corp.

Hitachi Tohbu Semiconductor, Ltd.

S4, Inc.

Takeshi Furuno

Kunihiro Katayama

Takashi Tsunehiro

Kenichi Kaki

Hajime Yamagami

Yoshihiro Hayashi

Kouichi Terada

Masashi Wada

Masahito Takahashi

Kazunori Furusawa

Takao Okubo

Michiko Odagiri

Akinori Matsuo

Yasuhiro Nakamura

Hiroshi Sato

Takao Okuba

Takeshi Nakamura

A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.

Storage device employing a flash memory

A memory apparatus packaged in one package is provided which includes first data terminals, first address terminals, a status terminal, and memory chips integrated in one semiconductor substrate, one of the memory chips being a nonvolatile memory. Each of the memory chips includes data terminals and address terminals. The data terminals of each of the memory chips are connected to the first data terminals, and the address terminals of each of the memory chips are connected to the first address terminals. The status terminal is arranged to output a status signal which indicates when the nonvolatile memory is in a ready status or in a busy status.

Semiconductor memory, memory device, and memory card

Growing community of inventors

Kodaira, Japan

Takeshi Furuno