Hi ,
can I connect nrf5340 pins D+and D- to the USB directly only via voltage translator from USB 5V to the nrf5340 1.8V main power?
Do you have a reference design for this purpose?
Hi ,
can I connect nrf5340 pins D+and D- to the USB directly only via voltage translator from USB 5V to the nrf5340 1.8V main power?
Do you have a reference design for this purpose?
Hi Alex,
I am sorry but could you be a bit more clear on your first query? If it is whether the D+ and D- can be directly connected to 5V, then NO.
And you can also refer the VBUS detection specifications.
Further details are also available in the USBD documentation.
Best Regards,
Priyanka
Dear Priyanka,
Thank you for the reply.
Refer to the schematic the USB is connected directly to the D+ D-.
But these pins are not tolerant to the 5v.
If I use some voltage translator between USB and D+ D-. pins will it work?
The links you sent aren't working.
where can I find the reference UCB connection schematic?
Additionally, what is the minimum voltage level for the first programming? In the previous design with nRF52832, I encountered the problem when the initial programming voltage level was at least 2.5V. But power management circuit has started with 1.8V and only after uploading the FW might reconfigure the management circuit to 3V.
hI
In case I understand it correctly I can connect D+ D- pins directly to the USB dedicated pins but connect B11&B12 power pins to the 3V .
Do I need to use a USB detection circuit or I can skip it without?