Virtual ground read only memory
US4638459A · kind A · utility
9Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Jan 31, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A dynamic read only memory (ROM) which comprises a memory select precharge section, a memory select section, a memory section, a memory precharge section and a plurality of grounding devices. The ground reference for the pulldown transistors is selectively activated at an appropriate time such that the memory sections are active only for a relatively brief portion of the memory cycle, thereby reducing dc power consumption and simplifying the driver circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.