MRAM field disturb detection and recovery

摘要

A method and memory device is provided for reading data from an ECC word of a plurality of reference bits associated with a plurality of memory device bits and determining if a double bit error in the ECC word exists. The ECC word may be first toggled twice and the reference bits reset upon detecting the double bit error.

主权项

1. A method comprising:
toggling data bits associated with an error correction code (ECC) word of a memory device twice; reading the data bits associated with the ECC word from the memory device; detecting a double bit error associated with the data bits of the ECC word; and determining that the memory device has been tampered with based at least in part on detecting the double bit error associated with the data bits of the ECC word.