Concurrent technology, device, and circuit development for EEPROMs

Circuit simulation enters into a new stage of enhanced importance. From the conventional circuit simulator for circuit design an active tool for concurrent engineering is emerging, which allows to integrate technology, device and circuit development in parallel. We will show here an EEPROM development case, which has been done on a transient circuit simulation level from the beginning. A precise unified EEPROM cell model was developed describing all characteristics with surface potentials dependent on technological parameter values. This new model enabled us to realize the requested circuitry goals from the first wafer run.