| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a nonvolatile memory cache having an architecture capable of reducing energy consumption of the writing operation of data for each cache line in a memory cache using the memory cell of an MRAM such as a spin injection memory.SOLUTION: In the memory cache, a data array is configured in a memory cell into which data is written by conducting a current required for flux reversal of an MTJ element. Null flag that shows that a cache line in the data array is composed of continuous zero bits is provided by a byte grain size or a word grain size for each cache line. The null flag is provided with a tag array of the memory cache.</p> |
