A memory device and method the pact random memory cell failures in a packaged memory device. The memory device is automatically programmed to replace a defective memory cell with an available redundant memory cells. The defective memory cell can be detected during either an erase operation or a program...http://www.google.com/patents/US6553510?utm_source=gb-gplus-sharePatent US6553510 - Memory device including redundancy routine for correcting random errors