At the time of an operation of writing data to a specific memory cell in a memory block, a semiconductor memory device applies a write voltage for a predetermined period and, after that, performs a verifying operation by using a sense amplifier circuit and a comparator. When it is found as a result of...http://www.google.fr/patents/US6856550?utm_source=gb-gplus-shareBrevet US6856550 - Nonvolatile semiconductor memory device capable of uniformly inputting/outputting data
Nonvolatile semiconductor memory device capable of uniformly inputting ...