TEMPERATURE ALERT AND LOW RATE REFRESH FOR A NON-VOLATILE MEMORY
First Claim
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1. An apparatus comprising:
- a non-volatile memory includinga temperature sensor to measure a temperature within the non-volatile memory anda register to store a temperature alert comprising one or more bits indicating the non-volatile memory has exceeded a threshold temperature for a period of time; and
a controller to determine that the temperature alert is active and, in response to determining that the temperature alert is active, refresh at least a portion of the non-volatile memory.
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Abstract
A method and apparatus are described for measuring a temperature within a non-volatile memory, storing, in a register within the non-volatile memory, a temperature alert comprising one or more bits indicating the non-volatile memory has exceeded a threshold temperature for a period of time, determining, by a host, that the temperature alert is active, and in response to the determination that the temperature alert is active, refreshing at least a portion of the non-volatile memory.
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Citations
20 Claims
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1. An apparatus comprising:
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a non-volatile memory including a temperature sensor to measure a temperature within the non-volatile memory and a register to store a temperature alert comprising one or more bits indicating the non-volatile memory has exceeded a threshold temperature for a period of time; and a controller to determine that the temperature alert is active and, in response to determining that the temperature alert is active, refresh at least a portion of the non-volatile memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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measuring a temperature within a non-volatile memory; storing, in a register within the non-volatile memory, a temperature alert comprising one or more bits indicating the non-volatile memory has exceeded a threshold temperature for a period of time; determining, by a controller, that the temperature alert is active; and in response to the determination that the temperature alert is active, refreshing at least a portion of the non-volatile memory. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. The method of claim 19, further comprising:
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storing, in the non-volatile memory, a sum of the integral of the temperature during multiple time periods when the temperature exceeds the threshold temperature; and setting the temperature alert to active when the sum of the integrals exceeds the threshold value.
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20. An apparatus comprising:
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a non-volatile memory including a reference memory cell to indicate memory degradation; and a controller to determine if the reference memory cell has degraded and, in response to determining that the reference memory cell has degraded, refresh at least a portion of the non-volatile memory.
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Specification