Single ended word line and bit line time constant measurement
US9418750B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Sep 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/3459
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In non-volatile memories, bit lines and word lines commonly to driving and decoding circuitry on a single end. Techniques are presented for determining the time constant associated with charging the far end of such lines from the near end, at which the circuitry is connected. While driving a discharged line from the near end, the number of clock cycles for the current to drop from a first level to a second level can be used to estimate the time constant for the far end. Alternately, the line can be initially charged up, after which the current is monitored at the near end. The differences in time constants for different word lines can be used to vary the time used when accessing a selected word line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.