| 摘要 |
<p>PURPOSE:To rewrite ROM data promptly by providing a connector to input a data rewrite signal and a wiring pattern which connects the connector with the ROM. CONSTITUTION:Surface packaged EPROM 1 is mounted on a printed board 2 directly by soldering. A connector 3 is provided with signal input terminals 3a to 3f which are designed to input a data rewrite signal from an outside write device. An input terminal of the EPROM 1 and an input terminal of the connector 3 are connected with a wiring pattern. Debug is carried out in standard mode wherein a driver 2a in a printed board 2 or power source 2b is connected with the EPROM. When bug is detected, a signal is input from the input terminals 3a to 3f of the connector 3 without removing the EPROM 1 from the printed board 2.</p> |
