Multi-threshold reset circuit
First Claim
1. A device comprising:
- one or more circuits that are configured to be powered by a supply voltage; and
a reset circuit having a first mode and a second mode, the first mode having a first voltage threshold and a second voltage threshold, the second mode having a third voltage threshold;
the reset circuit being configured to a) reset the one or more circuits in response to a level of the supply voltage relative to the first voltage threshold or second voltage threshold when the reset circuit is in the first mode and b) reset the one or more circuits in response to the level of the supply voltage relative to the third voltage threshold when the reset circuit is in the second mode.
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0 Petitions
Accused Products
Abstract
A device can include one or more circuits that are configured to be powered by a supply voltage having a specified minimum operating value and a specified nominal operating value; and a reset circuit having a first voltage threshold and a second voltage threshold, the first voltage threshold having a value between the specified minimum operating value and the specified nominal operating value, the second voltage threshold having a value that is less than the specified minimum operating voltage. The reset circuit can be configured to a) reset the one or more circuits when the device is functioning in a first mode and the supply voltage drops below the first threshold and b) reset the one or more of circuits when the device is functioning in a second mode and the supply voltage drops below the second threshold.
43 Citations
38 Claims
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1. A device comprising:
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one or more circuits that are configured to be powered by a supply voltage; and a reset circuit having a first mode and a second mode, the first mode having a first voltage threshold and a second voltage threshold, the second mode having a third voltage threshold; the reset circuit being configured to a) reset the one or more circuits in response to a level of the supply voltage relative to the first voltage threshold or second voltage threshold when the reset circuit is in the first mode and b) reset the one or more circuits in response to the level of the supply voltage relative to the third voltage threshold when the reset circuit is in the second mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A device comprising:
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one or more circuits in a device that are configured to be powered by a supply voltage having a specified minimum operating value and a specified nominal operating value; and a reset circuit having a first voltage threshold and a second voltage threshold, the first voltage threshold having a value between the specified minimum operating value and the specified nominal operating value, the second voltage threshold having a value that is less than the specified minimum operating voltage; the reset circuit being configured to a) reset the one or more circuits when the device is functioning in an operating mode and the supply voltage drops below the first threshold and b) reset the one or more of circuits when the device is functioning in a test mode and the supply voltage drops below the second threshold.
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21. A method of resetting a device comprising:
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determining when a device is in a first mode, and if so, asserting a reset signal to one or more circuits in the device based on a level of a supply voltage relative to a first threshold; and determining when the device is in a second mode, and if so, asserting the reset signal to the one or more circuits based on the level of the supply voltage relative to a second threshold. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of resetting a device comprising:
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determining when a device is in a first mode, and if so, asserting a reset signal to one or more circuits associated with the device when a supply voltage decreases below a first threshold, the first threshold having a value between a specified minimum operating value and a specified nominal operating value; and determining when the device is in a second mode, and if so, asserting the reset signal to the one or more circuits when the supply voltage decreases below a second threshold, the second threshold having a value that is less than the specified minimum operating value. - View Dependent Claims (33, 34)
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35. A method of testing a device comprising:
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providing to a device a reduced supply voltage, the reduced supply voltage having a value that is less than a specified minimum operating value of the device; testing the device at the reduced supply voltage; and preventing a reset signal from being asserted when the provided supply voltage is less than the specified minimum operating level but more than a threshold level. - View Dependent Claims (36, 37, 38)
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Specification