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US 2019/0199350 A1Published application
Power gating control circuit
AssigneeSK hynix Inc.
InventorsWoongrae KIM, Tae Yong LEE
Life of this patent
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Abstract
A power gating control circuit may include a transmission control circuit configured to receive a first fuse signal and output a second fuse signal based on a level of the first fuse signal in a normal mode or output a second fuse signal regardless of a level of the first fuse signal in a power down mode. The power gating control circuit may include a logic circuit block including logic gates and configured to apply the second fuse signal to the logic gates.
Claims20
A power gating control circuit comprising:
- a logic circuit block including logic gates, the logic circuit block configured to cut off power to the logic gates in response to a power down signal, and perform an originally intended function with the logic gates using a fuse signal provided from an external device in a normal mode;
- and
- a transmission control circuit configured to generate the power down signal in response to a standby signal, and block the fuse signal from being applied to the logic circuit block in response to the standby signal.
A power gating control circuit comprising:
- a test mode circuit configured to generate a first fuse signal;
- a logic circuit block including logic gates and configured to cut off power to the logic gates in response to a power down signal, and fix an output level of the logic gates to a level corresponding to a power down mode using a second fuse signal;
- and
- a transmission control circuit configured to generate the power down signal based on a standby signal, and generate the second fuse signal having a value unrelated to the first fuse signal.
1 more element
A power gating control circuit comprising:
- a transmission control circuit configured to receive a first fuse signal and output a second fuse signal based on a level of the first fuse signal in a normal mode or output the second fuse signal regardless of a level of the first fuse signal in a power down mode;
- and
- a logic circuit block including logic gates and configured to apply the second fuse signal to the logic gates,
- wherein the output transmission control circuit is configured to output the second fuse signal regardless of the level of the first fuse signal in the power down mode and for a duration in the normal mode, and
- wherein the transmission control circuit is configured to continue applying the second fuse signal regardless of a level of the first fuse signal for a duration past the power down mode.
2 more elements
(canceled)
Dependencies are inferred from the claim text.