pic microcontroller discussion list wrote:
> I added a 100nf bypass and it does seem to work perfectly now.
> Should I still bother with the MCLR diode?  I've never used one in
> the past, but if its supposed to be there...

For ICSP, something needs to both hold MCLR high and isolate it
from Vdd. So you need at least a resistor from Vdd to MCLR.
some datasheets tell you to use a resistor plus diode. A
resistor alone may be enough depending on the rest of the circuit,
and how beefy the programmer's Vdd drive is.

Since you seem to be just starting out, go the safe route and
use both a resistor and diode. Experiment later after everything
else is working properly. But that's just my opinion....

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