Semiconductor apparatus with two activating modes of different number of selected word lines at refreshing
US5550781A · kind A · utility
71Cited by
16References
12Claims
0Family size
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Key dates
| Filing date | Jan 31, 1995 |
| Grant date | Aug 27, 1996 |
| Priority date | — |
| Expiry date | Jan 31, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4074
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory cartridge having a plurality of dynamic memory units includes an access conversion circuit which converts a static access signal into its inverted signal and an access control circuit which controllably switches between a signal for refreshing each dynamic unit and a signal for external access. The memory cartridge also includes a power switching circuit which switches power from an internal power supply to an external power supply when the memory cartridge is mounted to an external device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.