Portable data storage apparatus
First Claim
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1. A memory card comprising:
- a non-volatile memory; and
a power management unit for receiving an external supply voltage to supply an operating voltage to the non-volatile memory, wherein the power management unit boosts/bypasses the external supply voltage based on whether the external supply voltage is lower than a detection voltage and then outputs the boosted/bypassed voltage as the operating voltage of the non-volatile memory.
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Abstract
A memory card comprises a non-volatile memory; and a power management unit for receiving an external supply voltage to supply an operating voltage to the non-volatile memory. The power management unit boosts/bypasses the external supply voltage based on whether the external supply voltage is lower than a detection voltage and then outputs the boosted/bypassed voltage as the operating voltage of the non-volatile memory.
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Citations
21 Claims
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1. A memory card comprising:
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a non-volatile memory; and
a power management unit for receiving an external supply voltage to supply an operating voltage to the non-volatile memory, wherein the power management unit boosts/bypasses the external supply voltage based on whether the external supply voltage is lower than a detection voltage and then outputs the boosted/bypassed voltage as the operating voltage of the non-volatile memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A memory card comprising:
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a printed circuit board;
a passive capacitor installed at the printed circuit board;
a non-volatile memory chip installed at the printed circuit board; and
a controller circuit chip installed at the printed circuit board, for receiving an external supply voltage to supply an operating voltage to the non-volatile memory chip, wherein the controller circuit chip performs a boosting operation using the passive capacitor when the external supply voltage is lower than a detection voltage, the boosted voltage being outputted as the operating voltage of the non-volatile memory chip; and
wherein the controller circuit chip bypasses the external supply voltage as the operating voltage when the external supply voltage is the same as or higher than the detection voltage. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A memory card comprising:
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a non-volatile memory; and
a power management unit for receiving an external supply voltage to supply an operating voltage to the non-volatile memory, wherein the power management unit judges whether the external supply voltage belongs to a low voltage range or a high voltage range; and
wherein when the external supply voltage belongs to the high voltage region, the power management unit bypasses the external supply voltage as the operating voltage. - View Dependent Claims (21)
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Specification