How can I bind these two keys?

[volunteers]

Hi, group,
I just start to use emacs. How can I bind the keys 'C-c C-s' to one key
such as 'C-m'? I don't want 'C-m' to be a global keybinding and I just
want it works when I edit matlab codes. How about bind them to 'F5'?

Thanks.

Vol