Multiple-mode current sources for sense operations
US10311921B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2017 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Dec 29, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2213/76
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A bit line read voltage generator may operate in a high drive strength or current mode to drive a selected bit line voltage to a read selected bit line voltage at a high level, and then may switch to operating in a low drive strength or current mode. Doing so may control, such as by limiting, the amount of cell current if the selected memory cell turns on, reducing the likelihood of false writes. Also, a word line read voltage generator may operate in a high drive strength or current mode to ramp up a selected word line voltage level, and then may switch to operating in a low drive strength or current mode to shorten the time for a global selected word line voltage to decrease to below a trip level and/or to control an amount of the cell current when the selected memory cell turns on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.