Semiconductor device for distributing a reference voltage
US10599254B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2017 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Apr 19, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0294
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a semiconductor device in which a reference voltage is generated by a reference voltage generation circuit, and the same reference voltage generated is used in a plurality of circuit units for the purpose of generating a voltage, a sampling and holding circuit of the reference voltage is provided in order to provide a standard voltage to the circuit units. A sampling and holding control circuit that controls the sampling and holding circuit instructs the sampling and holding circuit to perform a sampling operation of the reference voltage in case that the semiconductor device operates in a state where power supply noise of the reference voltage generation circuit falls within a predetermined range, and instructs the sampling and holding circuit to perform a holding operation of the reference voltage in case that the semiconductor device operates in a state where the power supply noise exceeds the predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.