Miles & Stockbridge P.C.
Semiconductor device having a ring oscillator and MISFET for converting voltage fluctuation to frequency fluctuation
A semiconductor integrated circuit device having a control signal system for avoiding failure to check an indefinite signal propagation prevention circuit, for facilitating a check included in an automated tool, and for facilitating a power shutdown control inside a chip. In the semiconductor integrated circuit device, power shutdown priorities are provided by independent power domains (Area A to Area I). A method for preventing a power domain having a lower priority from being turned OFF when a circuit having a high priority is turned ON is also provided.
Renesas Electronics Corporation
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Hiroyuki Yoshihiko Takahiro Yusuke Kenji
Mizuno Yasu Irita Kanno Hirose