Data processing device provided with a voltage detector

Details Data processing device provided with a voltage detector Data processing device provided with a voltage detector

1991-08-19

1993-08-17

Chun, Debra A.

Boots, shoes, and leggings

364707, 364DIG1, 364270, 3642702, 3642735, G06F 126

Patent

active

052376974

ABSTRACT:
This invention is a data processing device operated by a power source and includes a clock signal generator section for generating a clock signal whose clock frequency is changed according to a to-be-measured voltage, a counter section for counting the clock signal generated from the clock signal generator section in a preset period of time, a comparator section for comparing the count of the counter section with a reference value, and a voltage detector section for deriving the to-be-measured voltage based on the result of comparison by the comparator section. Variation in the power source voltage of the data processing device can be detected by use of a voltage detection circuit having the above sections and formed in a simple and small-sized construction.

REFERENCES:
patent: 4317180 (1982-02-01), Lies
patent: 4479191 (1984-10-01), Nojima et al.
patent: 5021679 (1991-06-01), Fairbanks et al.

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