We need to integrate BG95 with nrf52, since the uart voltage level needs to be stepped down, I was wondering if this is possible by the use of on-chip voltage translator IC(TXS0108EPWR - slot U403)? If there are any pins exposed for that? Or shall I have to make use of an external IC for the voltage translation first?
I can see the J806 test pins, but not sure if they can be used for this purpose.
Regards,
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The below is the connection procedure .
Remove R407 and R411.
Press the PWRKEY button to turn on the module. The AT communication works fine
- To avoid voltage drop, you can try to add pull-up resistors(like 47K ohm) to pull up the TXD_3V pin to 3.3V.
- To avoid TX and RX reverse, please switch the TX and RX to try.
the voltage translator IC on UMTS<E evb can be used in your side
Hi, I want to use hardware flow control.
Where can I connect RTS and CTS signals at 3.3v levels?
Can I get the schematics of UMTS<E EVB_V2.2 board?
Thanks a lot Stephen, It worked. We can close the ticket.