This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Unconnected pins and unused pins before power down

I'm trying to minimize the power consumption on our board which has a Nuvoton NANO120LE3BN ( M0-cortex ).

1)What state should the unconnected pins on the board be assigned to decrease the power consumption?

2)When we enter power down, some pins have no use in the power down mode. For e.g. if a chip 'IC1' is connected over two GPIO pins of the microcontroller 'ENABLE' and 'PWM'. The ENABLE pin is used to power down IC1. Thus, the ENABLE pin is used even when the device is powered down. But the PWM pin is useless in power down mode. What state should be assigned to this PWM pin?