Patent ID: 6795355
Filing Date: 2004-09-21
Classification: G11C,H01L

Abstract:
A semiconductor integrated circuit device comprising:at least one internal circuit for performing predetermined processing based on at least data applied externally with respect to said semiconductor integrated circuit device or data transmitted mutually; p1 an internal potential generating circuit provided corresponding to said internal circuit for receiving a level set signal including information representing a level of an internal potential, and producing an internal potential at a level corresponding to said level set signal, said internal potential generating circuit including a comparing circuit for comparing a comparison reference potential with a level corresponding to said level set signal in a test operation; a test control circuit for controlling test processing of a level of an output potential of said internal potential generating circuit, and operating in said test operation to apply successively the plurality of level set signals to said internal potential generating circuit; a measuring circuit performing measurement in said test operation for detecting a set value required in said level set signal based on results of the comparison by said comparing circuit between the levels corresponding to said plurality of level set signals and said comparison reference potential; and a transmitting circuit for transmitting results of the measurement of said measuring circuit to said test control circuit.