| CPC G11C 11/4074 (2013.01) [G11C 5/147 (2013.01); G11C 11/4099 (2013.01); G11C 16/30 (2013.01); H03K 19/20 (2013.01); G11C 5/145 (2013.01)] | 17 Claims |
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1. A storage device comprising:
a controller configured to exchange data with an external host through an interface;
a plurality of memory devices configured to store the data;
a power supply circuit configured to output internal voltages, required for the controller and the plurality of memory devices, using an external voltage received through the interface;
a distribution circuit connected between the controller and the power supply circuit and between the plurality of memory devices and the power supply circuit, and configured to provide an operating voltage to the plurality of memory devices; and
a discharge circuit including:
a first comparator configured to compare a first internal voltage, among the internal voltages, with a reference voltage,
a second comparator configured to compare a second internal voltage, different from the first internal voltage, with the reference voltage, and
an operational circuit configured to compute an output of the first comparator and an output of the second comparator to output a discharge control signal,
wherein the operating voltage is discharged based on the discharge control signal,
wherein a first power supply voltage input to the first comparator is a different value from a second power supply voltage input to the second comparator, and
wherein the first power supply voltage and the second power supply voltage are selected from among the internal voltages.
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