Integrated circuits having a controller to control a read operation and methods for operating the same
View Patent ↗In an embodiment, an integrated circuit having a memory cell arrangement is provided. The memory cell arrangement may include a memory cell block having a plurality of memory cells, a storage portion configured to store information about a quality characteristic of the memory cells of the memory cell block, and a controller configured to control a read operation, and to change the information about the quality characteristic depending on a quality of a read operation.
1. An integrated circuit comprising:
a memory cell arrangement, the memory cell arrangement comprising a plurality of memory cell blocks, each memory cell block comprising a plurality of memory cells;
means for storing information about a quality characteristic of the memory cells of an assigned one of the memory cell blocks; and
means for controlling a read operation on memory cells of a memory cell block out of the plurality of memory cells,
wherein the means for controlling is further configured to change the information about the quality characteristic depending on a quality of a read operation,
wherein the means for controlling a read operation is further configured to control an erase operation on memory cells of a memory cell block out of the plurality of memory cell blocks such that a current erase characteristic of the memory cells of the memory cell block is determined, and such that further depending on the determined current erase characteristic of the memory cells of the memory cell block, a predefined second action is carried out for the memory cell block.
2. The integrated circuit of claim 1 , wherein the current erase characteristic is a number of erase pulses used for erasing the memory cells of the memory cell block.
3. The integrated circuit of claim 1 , wherein the means for controlling a read operation is configured to control an erase operation such that the predefined second action is a classification of the memory cell block as a bad memory cell block.
4. An integrated circuit comprising a memory cell arrangement, the memory cell arrangement comprising:
a plurality of memory cell blocks, each memory cell block comprising a plurality of memory cells;
a storage portion configured to store information about a read failure characteristic of the memory cells of each memory cell block of the plurality of memory cell blocks;
a controller configured to control a read operation on memory cells of a memory cell block out of the plurality of memory cell blocks such that a current read failure characteristic of the memory cells of the memory cell block is determined; and
a wear leveling circuit configured to select memory cell blocks for programming dependent on the stored information about a read failure characteristic of the memory cells of each memory cell block of the plurality of memory cell blocks.