Other

Hitachi, Ltd.

Akita Electronics Co., Ltd.

Kazuki Honma

Masashi Wada

Yoshiki Kawajiri

Hirofumi Sonoyama

Mikio Sugawara

Fumiaki Kitajima

Terutaka Okada

Katsuhiro Haruyama

Shuichi Kuwahara

Hiroyuki Motomatsu

Takahiro Hatazawa

Disclosed are a semiconductor chip which is uniquely value-added, a semiconductor integrated circuit device which improves the productivity and yield of products and facilitates the production management, and a method of manufacturing of semiconductor integrated circuit devices which enables the improvement of productivity and yield of products and the rational demand-responsive production management. The semiconductor chip includes a common circuit block which is operative at a first voltage and a second voltage that is higher than the first voltage, a first circuit block which is designed to fit the first voltage and operate in unison with the common circuit block, a second circuit block which is designed to fit the second voltage and operate in unison with the common circuit block, and a voltage type setup circuit which activates one of the first and second circuit blocks, with a first identification record indicative of the operability at the first voltage or a second identification record indicative of the operability only at the second voltage being held by the chip.

Semiconductor device and method of the semiconductor device

Semiconductor device in which a chip is supplied either a first voltage or a second voltage

A semiconductor device includes a first semiconductor chip having a non-volatile memory array which has a first memory area for storing input information of usual operation, and a second memory area for storing historical information of an electrical characteristic test of the first memory area. The device further includes a second semiconductor chip having a volatile memory array with a third memory area for storing input information of usual operation. Historical information of an electrical characteristic test of the third memory area of the second semiconductor chip is stored into the second memory area of the first semiconductor chip.

Semiconductor wafer, semiconductor chip, semiconductor device and method for manufacturing semiconductor device

The semiconductor memory device of the present invention is provided with a switching element comprised of a single channel MOS transistor at a halfway of a path used to transmit a high voltage supplied to the memory array via the external terminal at the time of a test performance, so that the switching element is turned off when a word line is changed to another, thereby resetting of the supply voltage having been required conventionally for each test performance is omitted.

Semiconductor memory device

Growing community of inventors

Kodaira, Japan

Kazuki Honma