A nonvolatile semiconductor memory apparatus of the present invention has a feature that charging of a control gate of a nonselective memory cell is simultaneously executed upon charging of a bit line. That is, in the case of normal reading (random accessing), charging of the control gate of the nonselective...http://www.google.es/patents/US5477495?utm_source=gb-gplus-sharePatente US5477495 - Nonvolatile semiconductor memory apparatus