LE940B6 HW User Guide
Rev. 2.02
Page 78 of 111
2020-01-10
As an example, RS232 level adaption circuitry could use a MAXIM transceiver (MAX218).
In this case, the chipset is capable of translating directly from 1.8V to the RS232 levels
(example on 4 signals only).
Figure 19: RS232 Level Adaption Circuitry Example
NOTE:
In this case, the length of the lines on the application must be taken into
account to avoid problems in the case of high-speed rates on RS232.
The RS232 serial port lines are usually connected to a DB9 connector as shown in Figure
20. Signal names and directions are named and defined from the DTE point of view.
Figure 20: RS232 Serial Port Lines Connection Layout
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