Miles & Stockbridge P.C.
Method of setting back bias of MOS circuit, and MOS integrated circuit
In a MOS circuit comprising a plurality of MOSFETs constituting a digital circuit, an input signal is supplied to the digital circuit, and a first back bias voltage is supplied to a semiconductor substrate or a semiconductor well region in which the MOSFETs are formed, so that a pn junction between the semiconductor substrate or the semiconductor well region and a source region is brought to a forward voltage. In a non-operating state in which a circuit operation is suspended by the input signal supplied to the digital circuit as a fixed level, a second back bias voltage is applied to the semiconductor substrate or the semiconductor well region so that the pn junction between the semiconductor substrate or the semiconductor well region and the source region is brought to a reverse voltage.
Renesas Technology Corp.
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inventional additional inventional inventional
Mitsuru Syuji Masaharu Hiroyuki
Hiraki Ikeda Kubo Mizuno