Nonvolatile memory apparatus and method for driving the same
AssigneeSK hynix Inc.
InventorChang Yong Ahn
Life of this patent
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Abstract
A method for driving a nonvolatile memory apparatus includes: a data storage preparation step of setting a write control voltage to a first level of voltage; a data storage step of driving a driving transistor through the write control voltage to generate a write current, and storing an external data in a memory cell through the write current; a data detection step of varying the write control voltage by a predetermined level from a preset voltage level, and reading the data stored in the memory cell; and a data verification step of determining whether the stored data coincides with the external data or not, and repeating the data storage step and the data detection step according to a result of the determining.
Claims19
A method for driving a nonvolatile memory apparatus which comprises a control unit and a write driver, comprising:
- a data storage preparation step of setting a write control voltage generated by the control unit to a first level of voltage;
- a data storage step of driving a driving transistor included in the write driver in response to the write control voltage to generate a write current, and storing an external data in a memory cell through the use of the write current;
- a data detection step of changing the write control voltage by a predetermined level from a preset voltage level, when reading the data stored in the memory cell;
- and
- a data verification step of determining whether the stored data coincides with the external data or not, and repeating the data storage step and the data detection step according to a result of whether the stored data coincides with the external data or not,
- wherein a level of the write control voltage is changed by the control unit.
A method for driving a nonvolatile memory apparatus including a control unit and a write driver, which repeats a write operation and a verification read operation during a data input operation, until external data and stored data coincide with each other,
- wherein the write operation comprises the steps of:
- driving a driving transistor included in the write driver in response to a write control voltage generated by the control unit to generate a write current;
- and
- storing the external data in a memory cell through the use of the write current, and
- the verification read operation comprises the step of changing the write control voltage by a predetermined level from a preset voltage level, when detecting the data stored in the memory cell, in order for next write operation,
- wherein a level of the write control voltage is changed by the control unit.
Dependencies are inferred from the claim text.