SEMICONDUCTOR MEMORY APPARATUS
First Claim
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1. A semiconductor memory apparatus comprising:
- a resistive memory cell;
a data sensing unit configured to sense an output voltage, formed by a sensing current supplied to the resistive memory cell, based on a reference voltage, and output data having a value corresponding to the sensing result; and
a reference voltage generation unit comprising a dummy memory cell including first and second resistors having first and second resistance values, respectively, and configured to output a voltage formed by the sensing current supplied to the dummy memory cell as the reference voltage.
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Abstract
A semiconductor memory apparatus includes a resistive memory cell; a data sensing unit configured to sense an output voltage, formed by a sensing current supplied to the resistive memory cell, based on a reference voltage, and output data having a value corresponding to the sensing result; and a reference voltage generation unit comprising a dummy memory cell including first and second resistors having first and second resistance values, respectively, and configured to output a voltage formed by the sensing current supplied to the dummy memory cell as the reference voltage.
5 Citations
19 Claims
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1. A semiconductor memory apparatus comprising:
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a resistive memory cell; a data sensing unit configured to sense an output voltage, formed by a sensing current supplied to the resistive memory cell, based on a reference voltage, and output data having a value corresponding to the sensing result; and a reference voltage generation unit comprising a dummy memory cell including first and second resistors having first and second resistance values, respectively, and configured to output a voltage formed by the sensing current supplied to the dummy memory cell as the reference voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A semiconductor memory apparatus comprising:
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a resistive memory cell; a first data transmission unit configured to control an amount of current for the resistive memory cell according to a voltage level of a selection signal; a data sensing unit configured to sense a first output voltage formed by a sensing current supplied to the resistive memory cell through the first data transmission unit, based on a reference voltage, and output data having a value corresponding to the sensing result; a dummy memory cell comprising first and second resistors coupled in parallel to each other and having first and second resistance values, respectively; and a second data transmission unit configured to control an amount of current for the dummy memory cell according to the voltage level of the selection signal and output a voltage formed by the sensing current supplied to the dummy memory cell as the reference voltage, wherein the reference voltage has a level in accordance with an intermediate value between the first resistance value and the second resistance value, and the sensing current. - View Dependent Claims (12, 13, 14, 15)
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16. A semiconductor memory apparatus comprising:
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a resistive memory cell having a first or second resistance value according to a data value stored therein; a dummy memory cell comprising first and second resistor pairs coupled in parallel to each other and having resistance value of summation of the first resistance value and the second resistance value respectively; and is a data sensing unit configured to sense an output voltage formed by a sensing current supplied to the resistive memory cell, based on a reference voltage formed by the sensing current supplied to the dummy memory cell, and decide a value of output data according to the sensing result, wherein the reference voltage has a level in accordance with an intermediate value between the first resistance value and the second resistance value, and the sensing current. - View Dependent Claims (17, 18, 19)
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Specification