Read circuit and read method
US8009484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2009 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Feb 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2013/0057
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a read circuit, a write circuit writes a data to be stored and/or a test data to the memory cell. A control circuit controls the write circuit to write the test data to the memory cell in a first phase, and to write the test data which is same as the first phase to the memory cell in a second phase. An integrator integrates voltages at one terminal of the memory cell during the first phase to obtain a first integrated voltage, and integrates voltages at one terminal of the memory cell during the second phase to obtain a second integrated voltage. A buffer stores the first integrated voltage. A comparator compares the first integrated voltage from the buffer with the second integrated voltage from the integrator to obtain the data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.