82Re: ADuC7030 Internal Clock
- Aug 16, 2006To quote the data sheet electrical specs,
"TA = 40°C to 125°C, unless otherwise noted."
This spec has no indication that it is not over the full temp range,
so I would say 3% is the number to use. That should be good enough
for async comms use if the other end is also within that spec. But
this is pushing it to the max.
--- In ADuC_ARM@yahoogroups.com, "good_roots_in_germany"
> Hi Earl,
> The specification of ADuC7030 is not yet released. Are you sure that
> you do not target ADuC7020?
> Analog specifies the internal oscilator with 3% tolerance and a
> temperature range of -40C to +125C.
> I guess the drift will be within this above mentioned tolerance range
> due to oscilator and PLL restrictions.
> --- In ADuC_ARM@yahoogroups.com, "Pomarijos, Earl Randy"
> <EPomarijos@> wrote:
> > Hi everyone,
> > Can somebody help me with this one.
> > Currently, we are using in our project the ADuC7030 with an external
> > oscillator.
> > We are planning to remove the external oscillator and using its
> > oscillator instead.
> > Is there any drift in using this idea? I mean, how accurate would
> it be?
> > The application is for automotive battery monitoring.
> > This means that the device would be subject to high or low
> > As well as the drifts for its voltage supply.
> > In this case, can we still rely on the accuracy of the internal
> > oscillator?
> > Can somebody also send me some documents that maybe useful in my
> > inquiries here.
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