Read tracking mechanism
US9311968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2013 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Jan 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/227
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A read time tracking mechanism (RTTM) for ensuring sufficient read time is provided. The read time tracking mechanism includes a read tracking circuit, which includes a tracking bit line (TBL) tracking circuit with one or more tracking cells, and a tracking word line (TWL). The RTTM also includes a sense amplifier enable (SAE) timing device configured to change the logic threshold of tracking WL (TWL) to delay the timing of signal change of TWL when necessary to ensure sufficient read time. The read time tracking mechanism is used to provide sufficient read time for memory arrays with various configurations, prepared under various process conditions, and operated under various voltages, and temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.