Hi there,


I've been using devices from this family for a while and all them,
according to my experience with PICKIT3, seems to require at least 3.5VDC
while being programmed, otherwise fail to program. Sometimes I can get them
to program as low as 3.35VDC but most of the time they won't, whereas
3.5VDC seems to be good enough 90% of the time. I've never been able to
program these parts with 3.0VDC which is within specs.


The programmer used is PICKIT3 with external power in a circuit, but
behaves the same if I connect an isolated device to PICKIT3 itself, using
self power or external power. No difference.


 The microchip programming specification for these parts is 3.0-3.6V
(parameter D111 on DS70619B document) with an instantaneous current during
programming of 200mA (parameter D114). Looking into the errata for these
parts does not mention anything regarding programming voltages that could
lead to think this is a known issue.


I have two PICKIT3 and both behave the same, my ICD2 does not support these
parts and I am reluctant to get an ICD3 just to find out the behavior is
the same...

Does anybody have different experience than this? any insight?

Ariel Rocholl
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