Semiconductor device with dummy interface circuit

摘要

A semiconductor device comprising a dummy interface circuit approximating to an external interface circuit with high accuracy is disclosed. The device further comprises a dummy interface circuit for internally generating, by simulation, a dummy output signal equivalent to the level of the output signal of the external interface circuit. The dummy interface circuit includes a dummy signal output circuit for producing a dummy output signal at a dummy output line, a dummy capacitor connected to the dummy output line, and a dummy load circuit connected to the dummy output line for converting the dummy output signal into a signal of a level corresponding to the output signal level of the external interface.