Oscillation based access time measurement
US6909301B2 · kind B2 · utility
7Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2002 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Mar 10, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An embodiment of the invention is a method for measuring access time where the frequency of a ring oscillator is measured with and without a device under test 1 in the ring. Those two frequencies are compared to calculate the access time of the device under test 1. Another embodiment of the invention is circuitry 25 that measures the frequency of a ring oscillator with and without a device under test 1. Again the two frequencies are compared to calculate the access time of the device under test 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.