21 Jan
1999
21 Jan
'99
1:24 a.m.
I think it's dynamic processor like the 8080 so
there is a minimum clock
that is likley a few Mhz.
Many of the faster CPUs these days have PLLs up front, so the minimum
clock speed may be a a function of the PLLs locking window.
The 68332 had (has, as I think it is still being made) a very interesting
feature - if the crystal fails (stops oscillating), the PLL will still
keep going and generate an interupt telling you that your crystal has
died! Just do not trust what the timers on the chip say, as that PLL will
tend to drift...
William Donzelli
william(a)ans.net