- Sat Apr 20, 2019 6:28 am
I don't think any extra resistor is necessary or even desirable.
The reset line has a 12K resistor pull up to 3.3V and a capacitor of unknown value to ground. So unaided when power is applied the capacitor charges up 'slowly ' through the 12K resistor and when it crosses threshold the reset is released and the chip starts up.
By adding a capacitor from the reset pin to 0V all one is doing is increasing the time constant and delaying when the voltage crosses the threshold.
There is no stress on the supply as the 12K resistor limits the charging current already.