Semiconductor integrated circuit

Details Semiconductor integrated circuit Semiconductor integrated circuit

1997-07-23

2000-02-29

Nelms, David

Static information storage and retrieval

Powering

36518911, 327530, 327534, 327537, G11C 700

Patent

active

060317787

ABSTRACT:
A semiconductor integrated circuit capable of eliminating a problem of a conventional semiconductor integrated circuit in that although a power saving mode can be applied normally to a combination circuit, it cannot be applied to a sequential circuit because the sequential circuit operates abnormally in the power saving mode, eliminating its holding data, in the conventional semiconductor integrated circuit. The semiconductor integrated circuit has a controller for varying the threshold voltages of field effect transistors included in the sequential circuit so that the controller places the threshold voltages at a low level in an operating mode to speed up the data write and read, and places them at a high level in an idling mode to reduce leakage currents. This makes it possible to prevent the data held in the sequential circuit from being corrupted and eliminated, and to implement a low power consumption.

REFERENCES:
patent: 5020029 (1991-05-01), Ichinose et al.
patent: 5406524 (1995-04-01), Kawamura et al.
patent: 5461338 (1995-10-01), Hirayama et al.
patent: 5610533 (1997-03-01), Arimoto et al.
patent: 5646900 (1997-07-01), Tsukude et al.
patent: 5828611 (1998-10-01), Kaneko et al.

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