Semiconductor integrated circuit device
US6335893B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10B12/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a semiconductor integrated circuit device having a first circuit block operating on a power supply voltage supplied through an external terminal and a second circuit block operating on an internal voltage generated by a power supply circuit, a voltage having an absolute value greater than that of the internal voltage is generated by a charge pump circuit; variable impedance means is provided between the output voltage and the internal voltage; and a reference voltage and the internal voltage are compared by a differential amplifier circuit operating on the output voltage generated by the charge pump circuit and the variable impedance means is controlled such that those voltages agree with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.