I am experimenting with low-power wireless arduino modules. For that, I needed 3V powered arduino so that I can do away with voltage regulators which eat up a lot of battery juice.
I am using 28 pin Atmega328p-PU dip IC with 8 MHz external crystal oscillator. Just for trying, I dumped the arduino pro mini 3.3V 8 MHz bootloader into it and it was a success. Everything is working as expected. However, I realized that SMD package which is being used in pro mini has 8 ADC pins compared to 6 in the DIP version.
Should I be worried about it?
Second feasible option is modifying the Arduino UNO board definition to use 8 MHz clock source as compared to 16 MHz and leave everything else same. Do you think this will serve my purpose?