Integrated device with voltage selector
US6476664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Mar 29, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The integrated device comprises a PMOS transistor and a voltage selector having an output connected to the bulk terminal of the PMOS transistor. The voltage selector comprises an input stage supplying a supply voltage or a programming voltage according to whether the device is in a reading step or in a programming step; a comparator connected to the output of the input stage, receiving a boosted voltage, and generating a first control signal, the state whereof depends upon the comparison of the voltages at the inputs of the comparator; a logic circuit connected to the output of the comparator and generating a second control signal, the state whereof depends upon the state of the first control signal and of a third-level signal; and a switching circuit controlled by the first control signal, by the second control signal, and by the third-level signal and supplying each time the highest among the supply voltage, the boosted voltage, and the programming voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.