Memory management among multiple erase blocks coupled to a same string

An apparatus, comprising:

• a memory array comprising a plurality of erase blocks and a plurality of strings of memory cells, wherein each string of the plurality of strings comprises:
• a first group of memory cells coupled to a first group of access lines and corresponding to a first erase block;
• and
• a second group of memory cells coupled to a second group of access lines and corresponding to a second erase block;
• and
• a controller coupled to the memory array and configured to:
• receive a write command corresponding to data to be written to the memory array;
• determine a temperature classification for the data to which the write command corresponds;
• and
• based on the determined temperature classification for the data, route the data to a first write cursor or to one of a number of different write cursors;
• wherein each string of the plurality of strings corresponds to a respective physical block of a plurality of physical blocks, with each physical block comprising a respective first erase block and respective second erase block, and wherein the controller is configured to, in association with performing wear leveling on the memory array:
• designate, as free physical blocks, those physical blocks among the plurality of physical blocks that comprise a free respective first erase block and a free respective second erase block;
• responsive to identifying one or more free physical blocks, perform wear leveling at the physical block level;
• and
• in the absence of identifying one or more free physical blocks, perform wear leveling at the erase block level.

An apparatus, comprising:

• a memory array comprising a plurality of physical blocks of strings of memory cells, wherein each physical block of the plurality of physical blocks comprises multiple erase blocks that are independently erasable, and wherein the multiple erase blocks within a particular physical block comprise memory cells coupled to a same string corresponding to the particular physical block;
• and
• a controller coupled to the memory array and configured to:
• track temperature information for the erase blocks storing data;
• allocate free erase blocks for use by one of a first write cursor or by one of a number of different write cursors based on a temperature classification of one or more erase blocks corresponding to a same physical block as a respective free erase block;
• determine a temperature classification for data to be written to the memory array;
• and
• based on the determined temperature classification for the data to be written to the memory array, route the data to one of the first write cursor or to one of the number of different write cursors;
• and
• wherein the controller is further configured to, in association with performing wear leveling on the memory array:
• designate, as free physical blocks, those physical blocks among the plurality of physical blocks that comprise a free respective first erase block and a free respective second erase block;
• responsive identifying one or more free physical blocks, perform wear leveling at the physical block level;
• and
• in the absence of identifying one or more free physical blocks, perform wear leveling at the erase block level.