Hitachi, Ltd.

Kenichi Tada

Hideki Hayashi

Koichi Sugimoto

Masatoshi Kawashima

Koki Tsutsumida

Tsutomu Sato

A semiconductor device is designed to facilitate analyzing a position and a cause of the failure of an integrated circuit adopting a polyphase clock. To this end, the semiconductor device is provided with an error detecting unit that detects that a problem of the operation occurs in the integrated circuit, a clock state holding unit that holds the information of phases in a predetermined term of a two- or more-phase clock and an output unit that outputs the information of the phases in the predetermined term of the two- or more-phase clock when the error detecting unit detects that the problem of the operation occurs in the integrated circuit.

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Kodaira, Japan

Kenichi Tada