Non-volatile semiconductor memory device
US5353249A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Jan 28, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A non-volatile semiconductor device includes a bus line; a plurality of bit lines coupled to the bus line; a cell transistor, connected between each of the bit lines and a word line, for storing electrical information; an output circuit, coupled to the bus line, for outputting a signal corresponding to the electrical information stored in the cell transistor under a condition in which the bus line has been charged to a predetermined voltage level; a constant voltage circuit coupled to the bus line, the constant voltage circuit generating a voltage having an approximately constant level when a current flows through the constant voltage circuit; and a current supply circuit, coupled to the bus line, for supplying a current to the constant voltage circuit via the bus line in accordance with a control signal supplied from an external unit, whereby the bus line is charged to a predetermined voltage level by the voltage generated by the constant voltage circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.