User's Guide

UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
An example of RS232 level adaptation circuitry could be done using a MAXIM transceiver
(MAX218).
In this case the chipset is capable to translate directly from 0/1.8V to the RS232 levels
(Example done on 4 signals only).
The RS232 serial port lines are usually connected to a DB9 connector with the following
layout: