Semiconductor device and power off method of a semiconductor device
AssigneeSamsung Electronics Co., Ltd.
InventorsHo-Yeon Jeon, Dae Hwan Kim, Young Hoon Lee
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Abstract
A semiconductor device and a power-off method of the semiconductor device, the semiconductor device including a first power source group including first and second power sources, a second power source group including a third power source and a power sequence controller. The power sequence controller performs power-on operations and power-off operations of the first to third power sources. The power sequence controller starts a power-off operation of the first power source group at a first time, and starts a power-off operation of the second power source group when the power voltage of the first power source group becomes a first voltage or when a first reference time has passed from the first time.
Claims20
A power-off method of a semiconductor device comprising a power sequence controller and a plurality of power sources, the power-off method comprising:
- starting, by the power sequence controller, a power-off operation of a first power source group including first and second power sources from among the plurality of power sources;
- and
- starting, by the power sequence controller, a power-off operation of a second power source group including a third power source from among the plurality of power sources when a first condition is satisfied,
- wherein the first condition comprises at least one of a condition that a power voltage of the first power source group becomes a first reference voltage, and a condition that a first reference time has passed since a first time when the power-off operation of the first power source group is started.
A power-off method of a semiconductor device comprising a power sequence controller and a plurality of power sources, the power-off method comprising:
- starting, by the power sequence controller, a power-off operation of a first power source group including first and second power sources from among the plurality of power sources;
- starting, by the power sequence controller, a power-off operation of a second power source group including a third power source from among the plurality of power sources when a power voltage of the first power source group becomes a first reference voltage;
- and
- starting, by the power sequence controller, a power-off operation of a third power source group including a fourth power source from among the plurality of power sources when a power voltage of the second power source group becomes a second reference voltage, wherein magnitudes of the first reference voltage and the second reference voltage are different from each other.
A power-off method of a semiconductor device comprising a power sequence controller and a plurality of power sources, the power-off method comprising:
- starting, by the power sequence controller, a power-off operation of a first power source group at a first time, the first power source group including first and second power sources from among the plurality of power sources;
- starting, by the power sequence controller, a power-off operation of a second power source group at a second time when a first reference time has passed from the first time, the second power source group including a third power source from among the plurality of power sources;
- and
- starting, by the power sequence controller, a power-off operation of a third power source group at a third time when a second reference time has passed from the second time, the third power source group including a fourth power source from among the plurality of power sources,
- wherein lengths of the first reference time and the second reference time are different from each other.
Dependencies are inferred from the claim text.