| 摘要 |
<p>PURPOSE:To select whether a pull-up resistance exists or not by the same chip by preparing two output transistors having the same characteristics in the same port. CONSTITUTION:The EPROM built-in microcomputer is provided with a pair of output ports having the same input/output format, and in one output port 1, a pull-up resistance is connected to the output port. At the time of wiring in an assembly process, which port is connected to an external pin of an IC can be selected.</p> |
