Semiconductor memory having redundancy
US4733372A · kind A · utility
11Cited by
3References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 6, 1986 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Aug 6, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Herein disclosed is a bipolar memory having redundancy, which can be produced with a small area. In this semiconductor memory having a body memory for storing data and a spare memory for relief of fault bit of the body memory, a row is selected by cutting fuses in a decoder. Fundamentally signal lines such as word lines are not provided with fuses. Other parts including a power source and a reference voltage source are provided with fuses without decreasing the operating speed accompanied by only a slight increase in the area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.