MEMORY DEVICE CAPABLE OF OPERATION IN WIDE TEMPERATURE RANGE AND DATA PROCESSING SYSTEM AND METHOD OF OPERATING THE SAME

摘要

A data processing system includes a first memory, a second memory, a temperature sensor, and a controller. The temperature sensor is configured to sense a temperature at the data processing system and generate a temperature signal. The controller is configured to control whether the first memory is enabled or disabled and whether the second memory is enabled or disabled based on the temperature signal and based on a first temperature threshold associated with the first memory and a second temperature threshold associated with the second memory.

主权项

1. A method of controlling a memory device in a data processing system, the memory device including at least a first memory chip and a second memory chip, the method comprising:
generating a temperature signal that reflects a temperature at the data processing system; based on the temperature signal, determining if the temperature at the data processing system is lower than a low temperature threshold; based on the temperature signal, determining if the temperature at the data processing system is higher than a high temperature threshold; when it is determined that the temperature at the data processing system is lower than the low temperature threshold, enabling the second memory chip and disabling the first memory chip; and when it is determined that the temperature at the data processing system is higher than the high temperature threshold, enabling the first memory chip and disabling the second memory chip, wherein the high temperature threshold has a higher temperature value than the low temperature threshold.