US Patent 7512000 Memory unit

A memory unit is provided herein. The present invention utilizes two non-volatile devices having a split gate structure to save a logic state of the memory unit. Thus, even when a power supply for the memory unit is shut down, the non-volatile devices can still save the logic state. The memory unit not only has the advantage of high speed operation of a static random access memory, but also functions as a non-volatile memory for saving data.