Tom=E1s =D3 h=C9ilidhe wrote:
> Voltage on VDD with respect to VSS:  -0.3V to +6.5V

Note that this is in the "Absolute Maximum Ratings" section.  That gives you
the voltage limits that are guaranteed not to destroy the device, not what
voltage range it will operate correctly over.  Read the text in the gray box
right below these specs.

> Now see this is the reason why newbies shy away from datasheets so
> much.

Loose the attitude already.

> I haven't a clue what it's trying to tell me that I can put -.3 volts
> on Vdd.

Yes that section is saying that you can put -.3V on Vdd without killing the
PIC.  It is not saying the PIC will work with -.3V on Vdd.

> So now that I've tried to "do my homework by myself", could someone
> please let me know how low I can go with the voltage supply to the
> 887? (Also, if there's somewhere in the datasheet that mentions this,
> I'd appreciate if you could point me to it)

Keep looking in the data sheet nearby.  For most PICs, the next page will
give you a graph showing the valid combinations of Vdd and clock rate.


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