CPC G11C 11/40611 (2013.01) [G11C 11/4076 (2013.01); G11C 11/4091 (2013.01); G11C 11/40626 (2013.01)] | 20 Claims |
1. A memory system, comprising:
a controller configured to refresh a memory array at a first temperature before a first refresh time that is acquired from a lookup table and corresponds to a time period for stored data in the memory array being lost at the first temperature,
wherein after the controller acquires a second refresh time from the lookup table, the controller is further configured to reset a refresh time period to refresh the memory array before the second refresh time, wherein the second refresh time corresponds to a time period for stored data in the memory array being lost at a second temperature different from the first temperature,
wherein the refresh time period corresponds to a time period after refreshing the memory array, and
when an operation temperature of the memory array changes from the second temperature to a third temperature, the controller is further configured to acquire a third refresh time from the lookup table when the second and third temperatures are in different refresh temperature intervals.
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