Method for initializing an electronic device using a dual-state power-on-reset circuit
First Claim
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1. A method for initializing an electronic device, the method comprising the steps of:
- detecting a change in a power supply voltage;
generating a signal to switch a power-on-reset (POR) circuit from a first power state to a second power state responsive to detecting a change in the power supply voltage;
determining if the power supply voltage has fallen below a minimum operating voltage; and
responsive to the determination that the power supply voltage has fallen below the minimum operating voltage, generating an initialization signal for the electronic device.
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Abstract
An initializer that responds to change in a power supply potential level, for generating an initialize signal to initialize a circuit to a select state, the initializer includes a power-on reset circuit that switches between an active and a powered-down state, and is for generating the initialize signal. The initializer also includes a wake-up circuit that monitors the power supply potential level and switches the power-on reset circuit from the powered-down state to the active state when selected change in the power supply potential level occurs.
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Citations
10 Claims
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1. A method for initializing an electronic device, the method comprising the steps of:
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detecting a change in a power supply voltage; generating a signal to switch a power-on-reset (POR) circuit from a first power state to a second power state responsive to detecting a change in the power supply voltage; determining if the power supply voltage has fallen below a minimum operating voltage; and responsive to the determination that the power supply voltage has fallen below the minimum operating voltage, generating an initialization signal for the electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification