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US 2011/0032769 A1Published application
System for verifying non-volatile storage using different voltages
AssigneeSanDisk Technologies LLC
InventorGerrit Jan Hemink
Life of this patent
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Abstract
When performing a data sensing operation, including a verify operation during programming of non-volatile storage elements (or, in some cases, during a read operation after programming), a first voltage is used for unselected word lines that have been subjected to a programming operation and a second voltage is used for unselected word lines that have not been subjected to a programming operation. In some embodiments, the second voltage is lower than the first voltage.
Claims1
A non-volatile storage system, comprising:
- a group of connected non-volatile storage elements;
- and
- a managing circuit in communication with said group of connected non-volatile storage elements, said managing circuit applies a particular voltage to a particular non-volatile storage element of said group, while applying said particular voltage to said particular non-volatile storage element said managing circuit applies a first voltage to one or more non-volatile storage elements of said group that are on a source side of said particular non-volatile storage element and a second voltage to two or more non-volatile storage elements on a drain side of said particular non-volatile storage element, said managing circuit senses a condition related to said particular non-volatile storage element and said particular voltage.
Dependencies are inferred from the claim text.