Mattingly, Stanger & Malur, P. C.
Semiconductor device including interface circuit, logic circuit, and static memory array having transistors of various threshold voltages and being supplied with various supply voltages
The well voltage of a CMOS circuit having low-threshold-voltage MOSFETs is controlled when the power supply is turned on, during normal operation, and when the supply voltage is cut off. The CMOS circuit can thus operate stably with lower power consumption, because latching-up is reduced when the supply voltage is applied to the CMOS circuit or when the supply voltage is cut off, and subthreshold current is decreased during normal operation.
Hitachi, Ltd.
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G11C H03K H03K H02M G11C H01L G05F H03K
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Kiyoo Hiroyuki
Itoh Mizuno