>reset with a brownout condition, anyone know offhand of a chip #.
>
National Semiconductor LP2951 takes 0-30VDC input, regulates it to 5VDC @
100ma with a reset for your micro when 5V goes out of a 5% window.
8-pin DIP; less than a buck in quantity.

On your crystal question, with a conventional crystal or a ceramic
resonator, I typically use Zero ohms for series resistors. OTOH, I ALWAYS
use a 1 meg in parallel with the crystal or resonator for reliable startup.
If you're using a LF timing crystal like 32KHz, though, that's an entirely
different kind of animal.


.....................Reg Neale.....................
"Ignorance is a renewable resource"   P.J. O'Rourke