Patent ID: 6795943
Filing Date: 2004-09-21
Classification: G11C

Abstract:
A semiconductor device carrying out a predetermined operation according to a signal applied through a plurality of first signal terminals, a plurality of second signal terminals, and a plurality of third signal terminals, said semiconductor device comprising:a first select circuit selecting any of a plurality of first test modes according to a signal applied through said plurality of first signal terminals; a second select circuit selecting any of a plurality of second test modes according to a signal applied through said plurality of second signal terminals; a third select circuit selecting any of said plurality of second test modes according to a signal applied through said plurality of third signal terminals; a fourth select circuit selecting the second test mode selected by the second select circuit and said third select circuit when a control signal is at a first level, and selecting the second test mode selected by said second select circuit when said control signal is at a second level; and a test mode execution circuit executing the first test mode selected by said first select circuit and the second test mode selected by said fourth select circuit.