STM32WB55 WLCSP100 Power supply connections when not in use.

[NirAlon]

Regarding P/N: STM32WB55 in a WLCSP100 package:

Q1: When VBAT is not in use, can I connect it to GND?

Q2: When VDDA is not in use, it must be connected to VDD, but is it still requires a 10 nF + 1 μF capacitors?

Q3: If VDDA is not in use, can I connect VREF+ to GND?

Thanks!

Nir

[Remi QUINTIN · Accepted solution]

Q1: VBAT to VDD

Q2: Not necessary the 10nF + 1uF

Q3: Yes, customer can connect to GND

[NirAlon]

Thanks a lot!