Circuit and method of outputting temperature data of semiconductor memory apparatus
First Claim
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1. A circuit for outputting temperature data of a semiconductor memory apparatus, the circuit comprising:
- a temperature detecting circuit configured to generate a temperature voltage corresponding to a change in temperature and outputs the temperature voltage;
an A/D converter configured to convert the temperature voltage into a first temperature code and outputs the first temperature code; and
a temperature data correcting unit configured to output a second temperature code obtained by correcting an error of the first temperature code using a correction code.
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Abstract
A circuit for outputting temperature data of a semiconductor memory apparatus includes a temperature detecting circuit that generates a temperature voltage corresponding to a change in temperature and outputs the temperature voltage, an A/D converter that converts the temperature voltage into a first temperature code and outputs it, and a temperature data correcting unit that outputs a second temperature code obtained by correcting an error of the first temperature code using a correction code.
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Citations
43 Claims
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1. A circuit for outputting temperature data of a semiconductor memory apparatus, the circuit comprising:
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a temperature detecting circuit configured to generate a temperature voltage corresponding to a change in temperature and outputs the temperature voltage; an A/D converter configured to convert the temperature voltage into a first temperature code and outputs the first temperature code; and a temperature data correcting unit configured to output a second temperature code obtained by correcting an error of the first temperature code using a correction code. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A circuit for outputting temperature data of a semiconductor memory apparatus, the circuit comprising:
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a temperature detecting circuit configured to generate a temperature voltage corresponding to a change in temperature and outputs the temperature voltage, and corrects an output voltage level according to an adjustment code input from outside the circuit; an A/D converter configured to convert the temperature voltage into a first temperature code and outputs the first temperature code, and outputs the adjustment code to the temperature detecting circuit in accordance with a predetermined control signal; and a temperature data correcting unit configured to output a second temperature code obtained by correcting an error of the first temperature code using a correction code. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of outputting temperature data of a semiconductor memory apparatus, the semiconductor memory apparatus including a temperature detecting circuit that outputs a temperature voltage corresponding to a change in temperature and a reference voltage setting a range for converting the temperature voltage into a first temperature code and an A/D converter that converts the temperature voltage into the first temperature code by using the reference voltage, the method comprising:
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creating a correction code for correcting an error of the first temperature code by using the first temperature code and a test code set in advance; and outputting a second temperature code obtained by performing operations on the first temperature code and the correction code. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A method for outputting temperature data of a semiconductor memory apparatus, the semiconductor memory apparatus including a temperature detecting circuit that outputs a temperature voltage corresponding to a change in temperature and a reference voltage setting a range for converting the temperature voltage into a first temperature code, and an A/D converter that changes a value of a digital code such that an analog voltage, which is obtained by converting the temperature voltage into the digital code and converting the digital code by using the reference voltage, is the same as the temperature voltage, and outputs the digital code as the first temperature code, the method comprising;
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changing the first temperature code such that an analog voltage obtained by converting a test code is the same as the temperature voltage, and changing the reference voltage by using the changed first temperature code such that the analog voltage is changed so as to correct the first temperature code; and creating a correction code for correcting an error of the first temperature code by using the first temperature code and the test code and correcting the first temperature code as a second temperature code by using the correction code, wherein the second temperature code is output by selectively performing the changing of the first temperature code and the changing of the reference voltage, and the creating of the correction code and the correcting of the first temperature code as the second temperature code. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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Specification