A read circuit includes a driver which changes a gate voltage of a memory cell and a sense circuit which identifies when the memory cell trips. The driver searches for the threshold voltage of the memory cell using stages which ramp up gate voltage and stages which ramp down the gate voltage. Each...http://www.google.es/patents/US5748533?utm_source=gb-gplus-sharePatente US5748533 - Read circuit which uses a coarse-to-fine search when reading the threshold voltage of a memory cell
Read circuit which uses a coarse-to-fine search when reading the threshold ...