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US 2016/0254047 A1Published application
Program verify for non-volatile storage
AssigneeSanDisk Technologies LLC
InventorsYongke Sun, Jiahui Yuan, Yingda Dong
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Abstract
A non-volatile storage system includes a plurality of non-volatile storage elements arranged in two dimensional or three dimensional structures. The system applies programming to the non-volatile storage elements and performs verification of the programming. The verification includes performing a multi-strobe sensing operation to test for multiple data states while applying a common word line voltage.
Claims20
A method of operating non-volatile storage, comprising:
- applying programming to a non-volatile storage element;
- and
- verifying the programming of the non-volatile storage element, including performing a multi-strobe sensing operation to test for multiple data states while applying a common word line voltage.
A non-volatile storage device, comprising:
- a plurality of non-volatile storage elements;
- word lines in communication with the non-volatile storage elements;
- bit lines in communication with the non-volatile storage elements;
- and
- one or more control circuits in communication with the bit lines and the word lines, the one or more control circuits are configured to program a selected non-volatile storage element, the one or more control circuits are configured to verify the programming of the selected non-volatile storage element by applying a first compare voltage on a selected word line and sensing the selected non-volatile storage element multiple times for different data states while continuing to apply the first compare voltage on the selected word line, the selected non-volatile storage element is in communication with the selected word line and a selected bit line.
2 more elements
A non-volatile storage device, comprising:
- a plurality of non-volatile storage elements arranged in a monolithic three dimensional structure;
- word lines in communication with the non-volatile storage elements;
- bit lines in communication with the non-volatile storage elements;
- sense amplifiers in communication with the bit lines, the sense amplifiers include a charge storage device;
- and
- control circuitry in communication with the word lines and the sense amplifiers, the control circuitry is configured to drive a word line voltage on a selected word line during a program verification operation, a selected sense amplifier and the control circuitry are configured to pre-charge the charge storage device of the selected sense amplifier and connect the pre-charged charge storage device to a selected bit line during the program verification operation so that the pre-charged charge storage device has an opportunity to be discharged via the selected bit line;
- the control circuitry is configured to sense two times to test for successful programming to two data states while driving the word line voltage on the selected word line.
4 more elements
Dependencies are inferred from the claim text.