I have a microcontroller that uses 4 GPIO pins as "bootstrap pins". The state of these pins (high/low) at boot time will determine important features of the microcontroller, such as output voltage to the flash chip.
It is therefore very important that these bootstrap pins have the correct state at boot.
They are defined to have internal pull-up / pull-down by default. The pull-up / pull-down has a strength of 75uA.
Can I safety leave these pins floating and rely on the pull-up / pull-down to set the state at boot? The datasheet seems to suggest that I can. However, I'm worried that stray noise or a finger (or a near by device), might overpower this 75uA drive strength.
Is this a realistic worry? I would like to save the space used by these 4 pointless external pull-up / pull-down resistors that I'm using if possible.