Hi there
I'm using a ATmega2560 in one of my project and I was wondering if this crystal would work? It also has the to capacitance built in
It's not a crystal, it is a ceramic resonator which isn't as precise as a crystal.
The Arduino boards generally use a surface mount version of the same kind of component for the main processor on the board, but not the usb-to-serial chip. There crystals are used.
O ok could you recommend anything that is through hole that is compatible with the ATmega2560?
Joes:
Hi there
I'm using a ATmega2560 in one of my project and I was wondering if this crystal would work? It also has the to capacitance built in
uk.rs-online.com/web/p/ceramic-resonators/7214887/
That resonator will work just fine. It has a frequency tolerance of +/- 0.5%, the same as most Arduinos (which also use ceramic resonators). If you need a more precise frequency than that, use a 16MHz crystal such as http://uk.rs-online.com/web/p/crystal-units/6938819/ and two 18pF capacitors instead.
Ok thanks for that
Whilst I'm on here, the AREF pin what should I be doing with it? Should I be pooling it down thow a ceramic capacitor 0.1 uf?
Thanks Joe
Joes:
Ok thanks for that
Whilst I'm on here, the AREF pin what should I be doing with it? Should I be pooling it down thow a ceramic capacitor 0.1 uf?Thanks Joe
It's optional, but most designs do have such a bypass cap wired to the Aref pin. It helps improve accuracy/noise reduction for analog reads.
Lefty