Systems and methods for row-wire voltage-loss compensation in crossbar arrays
US8611134B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Mar 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2213/77
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention are directed systems and methods for reading the resistance states of crossbar junctions of a crossbar array. In one aspect, a system includes one or more sense amplifiers connected to column wires of the crossbar array, a reference row wire connected to each sense amp, and a wire driver connected to the reference row wire and configured to drive the reference row wire. The sense amplifiers are configured so that when a selected row wire of the crossbar array is driven by a sense voltage, the column wires are held at approximately zero volts and pass currents through the column wires and sense amplifiers to the reference row wire so that resistive voltage losses along the reference row wire substantially mirror the resistive voltage losses along the selected row wire, allowing the sense amplifiers to determine the crossbar junction resistance states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.