| 摘要 |
<p>The present invention is provided with a base board (2) on which wiring is provided, a memory (4), installed on the base board (2) by soldering, for storing data and a certification key, and a memory control LSI (3). The memory control LSI is a fabricated as a bare chip incorporating an internal memory (3b) for storing data and a certification key, and a control section (3a) for controlling the storing of data in the memory (4) and the reproduction of the data from the memory (4). The bare chip is installed on the base board (2) and covered with sealing resin. The bare chip is connected to the base board (2) by gold wire bonding. The certification key stored in the memory (4) is compared with the certification key stored in the internal memory. Based on the coincidence or non-coincidence between these keys, the control section determines whether or not the memory (4) is an intended one. <IMAGE></p> |
