Apparatus for variable resistive memory punchthrough access method
First Claim
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1. A method comprising:
- applying a voltage across a source region and a drain region of a transistor that is sufficient to merge a source depletion region and a drain depletion region of the transistor and conduct a write current through the transistor;
switching a variable resistive data cell from a high resistance state to a low resistance state by passing the write current through the variable resistive data cell in a first direction.
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Abstract
Variable resistive punchthrough access methods are described. The methods include switching a variable resistive data cell from a high resistance state to a low resistance state by passing a write current through the magnetic tunnel junction data cell in a first direction. The write current is provided by a transistor being electrically coupled to the variable resistive data cell and a source line. The write current passes through the transistor in punchthrough mode.
184 Citations
20 Claims
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1. A method comprising:
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applying a voltage across a source region and a drain region of a transistor that is sufficient to merge a source depletion region and a drain depletion region of the transistor and conduct a write current through the transistor; switching a variable resistive data cell from a high resistance state to a low resistance state by passing the write current through the variable resistive data cell in a first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
switching a variable resistive data cell from a high resistance state to a low resistance state by passing a write current through the variable resistive data cell in a first direction, the write current passing through the transistor in punchthrough mode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method comprising:
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applying a voltage across a source region and a drain region of a first transistor that is sufficient to merge a source depletion region and a drain depletion region of the first transistor and conduct a write current through the first transistor; activating a common transistor to allow the write current to pass through the common transistor, the common transistor electrically coupled to a source line and the first variable resistive data cell, the common transistor electrically coupled to a second variable resistive data cell. - View Dependent Claims (18, 19, 20)
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Specification