Semiconductor integrated circuit device and method of manufacturing the same

摘要

A semiconductor integrated circuit device, especially an EPROM (Electrically Programmable Read Only Memory) device which consists of an MIS type memory transistor portion having a floating gate electrode and a control gate electrode on said floating gate electrode, and of an MIS type transistor portion having a gate electrode is formed by patterning the same conductor layer as the floating gate electrode in the periphery of said MIS type memory transistor portion.