| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a means for immediately informing other devices that preliminary operation in an LSI such as a PLL is completed and starting operation once all relative devices become ready. SOLUTION: As for the electronic equipment equipped with semiconductor integrated circuits and the start-up notification system, a start-up timing signal connected to a power source through a pull-up resistance is generated and the semiconductor integrated circuits are equipped with a start-up control circuit, which is composed of an open drain output buffer connected to one terminal and a Schmitt trigger input buffer.</p> |
