| 摘要 |
A semiconductor integrated circuit includes an external pad, a ground line, a first protection circuit between the external pad and the ground line, and a second protection circuit between the external pad and the ground line. The second protection circuit is formed by a first protection element, a second protection element, and a resistor. With this structure, the resistance value of the resistor is set to an arbitrary value, so that an unnecessary current which would be generated at the time of power-off of the LSI can be decreased to a value which does not deteriorate the reliability of the LSI.
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