| 摘要 |
A memory device has a number of memory cells for storing data, and has at least one comparator unit (VE) for verifying whether the memory cell assigned to an address filed in the memory device (S) is not properly writable or readable or which lies in a memory cell zone which contains not properly writable or readable memory cells. A selection device (AE) receives a command to ensure that substitute memory cells or substitute memory cell zones are used instead of not properly writable or readable memory cells or memory cell zones. The selection device is supplied with information about the location of the memory cells or memory cell zones not being used even at a time at which it is still not established that the address filed at the memory device is assigned a memory cell which is not properly writable or readable or which lies in a memory cell zone which contains not properly writable or readable memory cells.
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