Semiconductor memory device with an extended data output mode
US5661688A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1996 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Apr 24, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/106
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory with an extended data output mode and the semiconductor memory includes a data output buffer, being always in enable state in the extended mode, for connecting between data output lines and an output terminal; a sense amplifier for sensing and amplifying the data read from a cell and transmitting the amplified data to inner input-output buses; a bus controller, being between the inner input-output buses and the data output lines, for switching connection between the inner input-output buses and data output lines in response to a data path control signal in order to store the data transmitted from the sense amplifier to the inner input-output buses and transmit the stored data to the data output buffer even after occurrence of a column address strobe signal; and a control signal generator for generating the data path control signal which is the combined signal of the signal gained by delaying the front of the column address strobe signal by a first delay time and the signal gained by delaying the rear of the column address strobe signal by a second delay time longer than the first delay time, by which the column address cycle speed can be ensured and the cycle…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.