Semiconductor storage device
US7489576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2007 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/065
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor storage device has first and second cell arrays including a plurality of memory cells to store data, a sense amplifier selectively connected with either one of the first and second cell arrays, a first precharge circuit to set a pair of bit lines in the first cell array to a predetermined voltage, a second precharge circuit to set a pair of bit lines in the second cell array to a predetermined voltage, a first switch circuit to connect the sense amplifier with the first cell array, a second switch circuit to connect the sense amplifier with the second cell array, and a switch controller to control conductive state of the first and second switch circuits. In non-selection state where the sense amplifier does not access any of the cell arrays, the switch controller controls one of the switch circuits into conducting state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.