Method and apparatus for adaptive data retention management in non-volatile memory

A solid state device (SSD) comprising:

• a non-volatile memory (NVM);
• a sensor configured to determine a temperature of the NVM;
• and
• a controller operatively coupled to the NVM and the sensor;
• wherein the controller is configured to:
• store data in the NVM;
• determine the temperature of the NVM;
• if the temperature of the NVM is below a predetermined temperature, maintain a data retention refresh rate of the NVM;
• and
• if the temperature of the NVM is equal to or above the predetermined temperature, adjust the data retention refresh rate at a first rate and then a second rate, each adjustment based on the temperature of the NVM, wherein the first rate and the second rate are different.

A solid state device (SSD) comprising non-volatile memory (NVM) comprising:

• means for storing data in the NVM;
• means for determining a temperature of the NVM;
• means for maintaining a data retention refresh rate of the NVM, when the temperature of the NVM is below a predetermined temperature;
• and
• means for, if the temperature of the NVM is equal to or above the predetermined temperature, adjusting the data retention refresh rate at a first rate and then a second rate, each adjustment based on the temperature of the NVM, wherein the first rate and the second rate are different.