I am doing some video OSD work, and need to synchronize the crystal oscillator on a 16F628 to the horizontal sync signal.
My question is, can I stop the oscillator by switching the xtal pin to ground, then turn it back on (reliably) with a horizontal sync pulse? I have seen this done with an RC oscillator, but I don't know if the crystal will start up reliably each time when it is "released"? Has anyone tried something similar?