Bit line tracking that progress has been made in high-performance memory compiler

摘要

The method of pursuing the bit line maturity time of compiler memory accurately is disclosed. This method responding to the internal clocking signal, includes the fact that it makes the dummy word line effective. The dummy word line before making the real word line effective, makes effective. The dummy bit line matures responding to making the dummy word line effective. The dummy bit line when the real bit line matures, matures at the same speed. In addition as for this method, although threshold voltage difference is decided on the basis of monitoring the maturity of the dummy bit line responding, it includes the fact that it makes the aforementioned dummy word line invalid. The real word line after making the dummy word line effective, makes effective with the delay which is stipulated beforehand. In the same way, the word line after making the dummy word line invalid, makes invalid with the delay which this beforehand is stipulated. Responding to making the dummy word line invalid, the sensuineiburu signal occurs.