Sensing circuit, memory device and data detecting method
US9437257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2013 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Oct 2, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/063
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sensing circuit includes a sensing resistor, a reference resistor and a comparator. The comparator has a first input coupled to the sensing resistor, a second input coupled to the reference resistor, and an output. The first input is configured to be coupled to a data bit line associated with a memory cell to receive a sensing input voltage caused by a cell current of the memory cell flowing through the sensing resistor. The second input is configured to be coupled to a reference bit line associated with a reference cell to receive a sensing reference voltage caused by a reference current of the reference cell flowing through the reference resistor. The comparator is configured to generate, at the output, an output signal indicating a logic state of data stored in the memory cell based on a comparison between the sensing input voltage and the sensing reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.