Mode setting circuit and mode setting apparatus used to select a

Details Mode setting circuit and mode setting apparatus used to select a Mode setting circuit and mode setting apparatus used to select a

1996-10-15

1998-07-28

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

327142, 327198, 327 18, H03K 3289

Patent

active

057867194

ABSTRACT:
A semiconductor apparatus includes a mode setting circuit with reduced power consumption to select one of a plurality of functions produced by the apparatus. The mode setting circuit includes a switching transistor to connect or disconnect a first latch circuit with a mode setting terminal to which a mode setting potential is applied. A reset transistor connected in series with the switching transistor resets the first latch circuit. A control signal such as a clock signal causes either the switching transistor or the reset transistor to conduct alternately. The control signal and the input and output signals of the first latch circuit are fed to the following stage that include another latch circuit to generate a mode setting signal. The mode setting signal is determined based on whether or not the mode setting terminal is connected to the mode setting potential.

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Fletcher, An Engineering Approach to Digital Design, 1980, Fig. 5-23.

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