Voltage operation system
First Claim
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1. A voltage operating system, comprising:
- a power on reset circuit, for generating a power on reset signal;
a voltage detecting circuit, for detecting a working voltage to output a voltage detecting signal;
an operating signal generating circuit, coupled to the voltage detecting circuit and the power on reset circuit to output an operating signal according to the voltage detecting signal and the power on reset signal; and
an electronic fuse circuit is used to be melted or not according to a locking signal, a melting signal and the operating signal.
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Abstract
A voltage operation system includes: a power on reset circuit, a voltage detecting circuit, an operating signal generating circuit, and an electronic fuse circuit. The power on reset circuit is used for generating a power on reset signal. The voltage detecting circuit detects an operating voltage to output a voltage detecting signal. The operating signal generating circuit, coupled to the power on reset circuit and the voltage detecting circuit-outputs an operating signal. The electronic fuse circuit can be fused according to a lock signal, a fuse signal, and the operating signal.
5 Citations
13 Claims
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1. A voltage operating system, comprising:
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a power on reset circuit, for generating a power on reset signal; a voltage detecting circuit, for detecting a working voltage to output a voltage detecting signal; an operating signal generating circuit, coupled to the voltage detecting circuit and the power on reset circuit to output an operating signal according to the voltage detecting signal and the power on reset signal; and an electronic fuse circuit is used to be melted or not according to a locking signal, a melting signal and the operating signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A voltage operating method, comprising:
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generating a power on reset signal; outputting a voltage detecting signal in a response to a working voltage; outputting an operating signal in a response to the power on reset signal and the voltage detecting signal; and determining if an electronic fuse circuit is melted or not by a locking signal, a melting signal and the operating signal; wherein, when one of the power on reset signal and the voltage detecting signal is low voltage level, the operating signal is low voltage level, which is outputted from an operating signal generating circuit; and
when the power on reset signal and the voltage detecting signal are high voltage levels both, the operating signal is high voltage level, which is outputted from the operating signal generating circuit. - View Dependent Claims (9)
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10. A voltage operating system comprises:
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a power on reset circuit, for generating a power on reset signal; a voltage detecting circuit, for detecting a working voltage to output a voltage detecting signal; an operating signal generating circuit, coupled to the voltage detecting circuit and the power on reset circuit to output an operating signal according to the voltage detecting signal and the power on reset signal; and an electronic fuse circuit is used to be melted or not according to a melting signal and the operating signal; wherein, when the working voltage is smaller than a threshold, the voltage detecting signal disables the operating signal generating circuit, making the operating signal generating circuit to output the operating signal at low voltage level;
when the working voltage is greater than the threshold, the voltage detecting signal enables the operating signal generating circuit, making the operating signal generating circuit to output the operating signal at high voltage level. - View Dependent Claims (11, 12, 13)
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Specification