UC864-E Hardware User Guide
1vv0300766a Rev.1 - 31/01/08
5V UART level translation
If the OEM application uses a microcontroller with a serial port (UART) that works at a voltage different from 2.6 – 2.9V, then a circuitry has to be provided to adapt the different levels of the two sets of signals. As for the RS232 translation there are a multitude of single chip translators. For example a possible translator circuit for a 5V TRANSMITTER/RECEIVER can be:
TO TELIT
MODULE
TIP: This logic IC for the level translator and 2.6V
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