Select line voltage waveform real-time monitor for non-volatile memory
US10910060B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2019 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Sep 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/32
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus comprising strings of non-volatile memory cells is disclosed. Each string comprises non-volatile memory cells, an operative select gate, and a dummy select gate. The apparatus comprises a select line connected to the operative select gate of each string, and a dummy line connected to the dummy select gate of each string. The dummy line is an immediate neighbor to the select line. The apparatus comprises a control circuit configured to apply a voltage waveform to the select line while the dummy line is floating. The control circuit is configured to detect a floating voltage on the dummy line while applying the voltage waveform to the select line. The control circuit is configured to determine a condition of the voltage waveform at a target location on the select line based on the floating voltage on the dummy line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.