Wagner Lipnharski wrote:
> <snipped a LOT out>
> 3) PICs can run down as 10kHz without any problem?

  PICs can run "DC and up" - i.e. if you safely stop the oscillator
pulse train (without bouncing or glitches) you can then re-start it
later, no problems.  That's why in RC mode, OSC1's frequency is divided
by 4 and output through OSC2 - everything's done in 4 clock cycles.
(I've wondered about the AVR parts on this, but if anyone talks to me
about that, let's go private e-mail PLEASE!)

  On a 10 MHz part, then, you can put in clock pulses into OSC1 that're
between DC voltages and 10 MHz (no requirement for smooth variation of
frequency, either.)  Allows you to "halt" subprocessors pretty easily,
in some designs, with a tri-stated gate & a pull-up resistor, etc.

  I wouldn't throw random "hash" in there on a bet, though.  <G>

  Mark