Patent ID: 7149830
Filing Date: 2006-12-12
Classification: G06F

Abstract:
1. A semiconductor device provided with prescribed terminals to receive external signals, for generating an interrupt signal based on a prescribed external signal, said semiconductor device comprising: selection control unit for specifying at least one external input terminal to be used as an interrupt terminal out of a plurality of external input terminals; selection unit connected to said plurality of external input terminals, for selecting said at least one external input terminal specified as said interrupt terminal by said selection control unit and outputting at least one external signal entered from said at least one external input terminal selected; and interrupt control unit for generating at least one interrupt signal according to a waveform of said at least one external signal output from at least one interrupt terminal selected by said selection unit, wherein said selection control unit is a storage unit for storing specification information specifying whether each of said plurality of external input terminals is used as an interrupt terminal, and the specification information is changeable from outside.