Memory circuit with power supply voltage detection means

Details Memory circuit with power supply voltage detection means Memory circuit with power supply voltage detection means

1983-08-31

1986-12-23

Popek, Joseph A.

Static information storage and retrieval

Powering

365228, G11C 700

Patent

active

046317074

ABSTRACT:
A memory circuit provided with a control circuit which controls operations of the memory circuit in such a manner that the memory circuit is automatically set in a stand-by state when a value of a power voltage is reduced in absolute value irrespectively of a control signal from the outside and which consumes no DC current is disclosed. The control circuit comprises a load element coupled between first and second terminals, a series circuit of first and second field effect transistors coupled between the second terminal and a third terminal, the first transistor being controlled by the control signal, the second transistor being adapted to be conducting when a value of the power voltage is sufficient for allowing a normal access operation, a means for connecting the first terminal to one of the power voltage and a reference voltage, and a means for connecting the third terminal to the other of the power voltage and the reference voltage.

REFERENCES:
patent: 4104734 (1978-08-01), Herndon
patent: 4288865 (1981-09-01), Graham
patent: 4399524 (1983-08-01), Muguruma et al.

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