Memory circuit provided with bistable circuit and non-volatile element
US9601198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Nov 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/1693
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory circuit includes: a bistable circuit (30) that stores data; nonvolatile elements (MTJ1, MTJ2) that store data written in the bistable circuit in a nonvolatile manner, and restore data stored in a nonvolatile manner into the bistable circuit; and a control unit that stores data written in the bistable circuit in a nonvolatile manner and cuts off a power supply to the bistable circuit when the period not to read data from or write data into the bistable circuit is longer than a predetermined time period, and does not store data written in the bistable circuit in a nonvolatile manner and makes the supply voltage for the bistable circuit lower than a voltage during the period to read data from or write data into the bistable circuit when the period not to read or write data is shorter than the predetermined time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.