Fujitsu Corporation

Kenichi Kawabata

Norihiro Nakatsuhama

Tomohide Yamamoto

Yoshiaki Nagatomi

Manabu Hayashi

Naoya Watanabe

Masaya Katayama

Noriyuki Suzuki

Tetsuya Yoshida

Seiichi Suzuki

Hironori Aono

Osamu Hideshima

Junichi Yayanagi

Masaya Ohtsuki

Tomohiro Wada

Kenji Nakata

Masatoshi Konishi

Kazuhiro Adachi

A semiconductor device includes a first power supply terminal, a second power supply terminal, a comparison circuit coupled to the first power supply terminal and the second power supply terminal to produce at an output node thereof a signal responsive to a difference between a potential of the first power supply terminal and a potential of the second power supply terminal, and a core circuit coupled to the output node of the comparison circuit to perform a test operation in response to the signal.

Semiconductor device and entry into test mode without use of unnecessary terminal

A semiconductor device in which input terminals for external interrupts can be set as desired. A plurality of external input terminals can be specified as interrupt terminals which output an input signal to an external interrupt circuit via an interrupt terminal selector. A selection control circuit specifies whether a plurality of external input terminals are used as interrupt terminals. According to the selection control circuit, the interrupt terminal selector outputs to the external interrupt circuit an input signal entered from an external input terminal which is specified as an interrupt terminal out of the plurality of external input terminals.

Semiconductor device and microcontroller

In a semiconductor device having a fuse and an etching stopper film covering the fuse, an optical window exposing the etching stopper film and a contact hole exposing a conductor pattern are formed simultaneously. By applying a dry etching process further to the etching stopper film, an insulation film covering the fuse is exposed in the optical window.

Semiconductor device having a fuse and a fabrication method thereof

Growing community of inventors

Kawasaki, Japan

Kenichi Kawabata