Sony Corporation

Atsushi Kamo

Masayoshi Abe

Takaaki Yamada

Chihiro Arai

Takahide Kadoyama

Makoto Utsuki

A semiconductor integrated circuit including on the same semiconductor substrate: a first circuit block including a switching transistor which is off when the first circuit block is inactive and on when the first circuit block is active, the first circuit block including internal circuits adapted to provide predetermined functions, the internal circuits being connected to a first power line maintained at a low-level source voltage; a second circuit block including internal circuits adapted to provide predetermined functions, the internal circuits being connected to a second power line maintained at a low-level source voltage; a power line switch section connected between the first and second power lines; and a control circuit adapted to control the power line switch section so that the first and second power lines are connected together at a later timing or gradually over a longer period of time than the switching transistor turns on.

Semiconductor integrated circuit and operation method of the same

A semiconductor element capable of reducing noises of a circuit propagating to another circuit through a seal ring is provided. A semiconductor element includes, on a surface of a semiconductor substrate: a plurality of circuits; a ring-shaped seal ring surrounding the plurality of circuits; and wiring connecting between the seal ring and an external low-impedance node.

Growing community of inventors

Kanagawa, Japan

Atsushi Kamo