I am inquiring about two things. One. Utilizing powering the nRF52840 with 1.8V at the nRF_VDD with number 3 configuration of recommended hardware with the Specification v1.1? Can this configuration be powered and programmed through SWD with only the USB voltage input?
Hi,
I'm not sure I understand what configuration you're referring to with "number 3 configuration of recommended hardware with the Specification v1.1?"
Are you thinking about the configuration with LDO only:
If yes, then you can power the nRF from 1.8V as the nRF will be in normal mode, as VDD and VDDH are tied together. The operating mode for normal mode is 1.7 - 3.6 V
Can this configuration be powered and programmed through SWD with only the USB voltage input?
You can program the chip through the SWD interface only.
regards
Jared
