Perhaps you're requesting a single frame advance record mode such as used for "stop motion" animation (flat cell artwork, "claymation", etc.)?
http://en.wikipedia.org/wiki/Stop_motionThis feature has been requested many times. BMD is aware of it. Maybe they'll add it, maybe they won't. We'll have to wait and see.
Such a feature could also be used to take single frame exposures similar to any stills camera. Without it, as squares says, BMD cameras currently record RAW essentially like burst mode on a DSLR … taking many exposures in a row (24-30 fps) … but at much lower res than most modern stills cams. In RAW mode, each frame is a CinemaDNG file, with hundreds or thousands of them recorded on the SSD depending on the duration of a "take".