Hello,
I am using the DA14580 WLCSP in a low power design. My MCU manufacturer recommends that unused GPIOs be set to inputs and connected to ground. I have also seen recommendations (from other manufacturers) that unused GPIOs should be left floating on the PCB, but internally set to output and driven high.
What does Dialog recommend be done with unused GPIO pins in low power designs?
Device:
Hi hughesk,
Whatever is not being used can be floating in input pull down state. Those that are used should be placed in low-power mode whenever they are not being used, but it depends on what is connected to the GPIO, for instance if its about the I2C, the pins should be hign in order for the pull-ups not to consume power.
Thanks MT_dialog
Thank you!