RRAM, and Methods of Storing and Retrieving Information for RRAM

摘要

Some embodiments include methods of storing and retrieving data for an RRAM array. The array is subdivided into a plurality of memory bits, with each memory bit having at least two memory cells. A memory bit is programmed by simultaneously changing resistive states of all memory cells within the memory bit. The memory bit is read by determining summed current through all memory cells within the memory bit. Some embodiments include RRAM having a plurality of memory cells. Each of the memory cells is uniquely addressed through a bitline/wordline combination. Memory bits contain multiple memory cells coupled together, with the coupled memory cells within each memory bit being in the same resistive state as one another.

主权项

1. A method of storing and retrieving data for a resistive random access memory array of X memory cells comprising coupling Y memory cells into each memory bit so that the RRAM array has no more than X/Y memory bits; the coupled memory cells of each memory bit being maintained in a common resistive state as one another during reading and writing operations; the memory bits having coupled memory cells providing enhanced reliability as compared to memory bits having only single memory cells.