Semiconductor memory device having a read-modify-write configuration
US4740922A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1985 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Oct 17, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/1075
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory device having a read-modify-write (RMW) configuration suitable for modifying a large number of data with high speed and a simple circuit. The RMW configuration includes a data input and output circuit (11, 14, 16) for simultaneously storing or reading a plurality of data into or from the memory cells, a data output circuit (10, 12, 13) for serially reading a plurality of data from the memory cells, and data modification circuits (15) for successively receiving the plurality of data from the data output circuit, modifying the received data if necessary and transmitting the modified data to the data input and output circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.