Semiconductor device having a reference voltage generating circuit
US4994688A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 15, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Mar 15, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/907
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Practical structures of an ultra large scale semiconductor integrated (ULSI) circuit especially a dynamic random access memory of 16 M bits or more are involved. The ULSI circuit uses internal operating voltages and how to construct a reference voltage generating circuit and a voltage limiter circuit in the ULSI circuit is a matter of importance. The operation of the reference voltage generating circuit and voltage limiter circuit can be stabilized, characteristics of these circuits are improved, and layout of these circuits as applied to memory cell array, peripheral circuits and the like can be improved. Improved methods of testing these circuits are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.