Antonelli, Terry, Stout & Kraus, LLP.
Semiconductor device including an arrangement for detection of tampering
Wiring lines for the supply of a voltage to feed a drive voltage to an integrated circuit formed in a semiconductor chip are disposed so as to cover a main surface of the semiconductor chip, so that, if the wiring lines are removed for the purpose of analyzing information stored in the semiconductor chip, the integrated circuit does not operate and it is impossible to analyze the information. Further, there is provided a processing detector circuit for detecting that the wiring lines have been tampered with. When the processing detector circuit detects a change in the state of the wiring lines, the integrated circuit is reset. Thus, it is possible to improve the security of information stored on the card.
Renesas Technology Corp.
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additional additional additional additional additional additional additional additional inventional additional inventional additional additional inventional additional additional additional additional inventional additional additional additional inventional additional additional inventional additional inventional additional inventional
Hirotaka Yoshio Takeo Yukio
Mizuno Masumura Kon Kawashima