i have use microcontrollers like the atmega328 and atmega2560 that have two pins called XTAL1 and XTAL2, the classic oscillator circuit. BUT in microcontroller like atmega1284p i have seen two aditional pins called TOSC1 and TOSC2, reading about the topic its says that are for a clock signal.
my two question are:
1.in wich kind of apllication do you need that for?
or better say.
When and why have you aplied this instead of just use the oscillator XTAL1 and XTAL2?
2. if i dont need to use a clock signal of 32768 hz to no thing. do i need to add one crystal or oscillator in those pins(TOSC1 and TOSC2) or can just ignore it?
thanks and sorry if im not being clear this is really new for me