Data Storage for Voltage Domain Crossings
First Claim
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1. An apparatus comprising:
- a data storage device, wherein data to be stored in the data storage device is level shifted from a first voltage domain to a second voltage domain prior to being stored within the data storage device, and wherein the data storage device is powered by the second voltage domain; and
a circuit powered by the second voltage domain, the circuit responsive to data output by the data storage device.
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Abstract
According to an embodiment, an apparatus includes a data storage device. Data to be stored in the data storage device is level shifted from a first voltage domain to a second voltage domain prior to being stored within the data storage device. The data storage device is powered by the second voltage domain. The apparatus further includes a circuit that is powered by the second voltage domain and that is responsive to data output by the data storage device.
16 Citations
32 Claims
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1. An apparatus comprising:
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a data storage device, wherein data to be stored in the data storage device is level shifted from a first voltage domain to a second voltage domain prior to being stored within the data storage device, and wherein the data storage device is powered by the second voltage domain; and a circuit powered by the second voltage domain, the circuit responsive to data output by the data storage device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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level shifting a data input signal to a data storage device from a first voltage level associated with a first voltage domain to a second voltage level associated with a second voltage domain, wherein the data storage device is powered by the second voltage domain; and sending an output of the data storage device to a circuit powered by the second voltage domain, wherein the data storage device is in a first clock domain and the circuit is in a second clock domain. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An apparatus comprising:
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means for storing data; and means for level shifting a data input signal to the means for storing data from a first voltage level associated with a first voltage domain to a second voltage level associated with a second voltage domain, wherein the means for storing data is powered by the second voltage domain. - View Dependent Claims (16, 17)
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18. A device comprising:
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a first voltage domain associated with a first voltage supply and including first circuitry powered by the first voltage supply; a second voltage domain associated with a second voltage supply and including second circuitry powered by the second voltage supply; a data storage device powered by the second voltage domain; and a level shifter coupled to an input of the data storage device and configured to level shift data to be stored at the data storage device from the first voltage domain to the second domain prior to being stored within the data storage device. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification