Semiconductor device having a controllable voltage supply

Details Semiconductor device having a controllable voltage supply Semiconductor device having a controllable voltage supply

1996-08-26

1998-01-06

Nelms, David C.

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36518909, 36523006, G05F 140

Patent

active

057062420

ABSTRACT:
A semiconductor device includes a nonvolatile memory cell and a current detecting type sense amplifier for detecting a current flowing through a data line into the memory cell. The semiconductor device is further provided with an element for outputting a first voltage detecting signal when a detected supply voltage exceeds a set value and outputting a second voltage detecting signal when the detected supply voltage does not exceed the set value. The sense amplifier includes an element for switching a dependent characteristic of a level sensing current upon the supply voltage to be a higher response to the first voltage detecting signal. Thus, error reading of a data from the memory cell, which can be otherwise caused under application of a low supply voltage, can be avoided.

REFERENCES:
patent: 5073731 (1991-12-01), Oh
patent: 5359552 (1994-10-01), Dhong et al.
patent: 5446697 (1995-08-01), Yoo et al.

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