Semiconductor Device
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Abstract
The invention provides a circuit which provides a stabilized boosting in the case where a semiconductor device typified by a non-contact ID chip includes a circuit which requires a higher voltage than a logic circuit does. By inputting an alternating signal inputted from an antenna to a charge pump circuit as it is or through a logic circuit, a charge pump can operate with a stabilized frequency that a clock frequency is not affected by a variation of elements and the ambient temperature, thus a stabilized boosting can be provided.
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Citations
84 Claims
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1-68. -68. (canceled)
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69. An RFID comprising:
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an antenna circuit configured to receive an alternating signal; a power source circuit configured to form a stabilized voltage from the alternating signal; and a charge pump circuit configured to be supplied the stabilized voltage, and to use the alternating signal as a clock signal. - View Dependent Claims (70, 71, 72)
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73. An RFID comprising:
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an antenna circuit configured to receive an alternating signal; a power source circuit configured to form a stabilized voltage from the alternating signal; a divider circuit configured to be supplied the stabilized voltage, to be inputted the alternating signal, and to form a divided alternating signal from the alternating signal; and a charge pump circuit configured to be supplied the stabilized voltage, and to use the divided alternating signal as a clock signal. - View Dependent Claims (74, 75, 76)
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77. An RFID comprising:
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an antenna circuit configured to receive an alternating signal; a power source circuit configured to form a stabilized voltage from the alternating signal; a divider circuit configured to be supplied the stabilized voltage, to be inputted the alternating signal through an amplifier, and to form a divided alternating signal from the alternating signal; and a charge pump circuit configured to be supplied the stabilized voltage, and to use the divided alternating signal as a clock signal. - View Dependent Claims (78, 79, 80)
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81. An RFID comprising:
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an antenna circuit configured to receive an alternating signal; a power source circuit configured to form a stabilized voltage from the alternating signal, comprising; a rectifier circuit configured to form a half-rectified alternating signal from the alternating signal; and a stabilizing power source circuit configured to form the stabilized voltage from the half-rectified alternating signal; a divider circuit configured to be supplied the stabilized voltage, to be inputted the alternating signal through an amplifier, and to form a divided alternating signal from the alternating signal; and a charge pump circuit configured to be supplied the stabilized voltage, and to use the divided alternating signal as a clock signal. - View Dependent Claims (82, 83, 84)
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Specification