Semiconductor memory device and a memory system having the same
US11133040B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2020 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Apr 20, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/2272
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory device includes: a temperature sensor configured to sense an internal temperature of the semiconductor memory device and generate a temperature signal; and a temperature code storage unit configured to receive the temperature signal in response to a temperature code write control signal that is generated when an operation corresponding to a specific command is performed, generate an operating temperature code corresponding to the temperature signal, compare the operating temperature code with a previously stored temperature code, store a larger temperature code of the operating temperature code and the previously stored temperature code as a maximum temperature code, and output the maximum temperature code to an external source in response to a temperature code read control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.