> We've always programmed (DIP) PIC chips using our PicStart+
> programmers, but this can be a real pain when debugging code
> and precludes the use of SMD packages. So, I'm wanting to
> implement ICSP on all new boards where possible

David,

the PicStart+ is of limited use for ICSP because wasn't designed
for that, and may not have the Vcc drive to power a whole circuit

There are at least a couple of options

Continue to use the PicStart+ and isolate the PIC with pads that
can be bridged after programming to connect it to the circuit

See

http://www.piclist.com/techref/microchip/picstartplusicsp.htm

which includes a switch option to do the same thing during s/w
development. I used this method a lot

Or get a programmer with enough drive capability to power the
whole circuit, such as Olin's (see link below). I think some can
supply 500mA or more

If some parts of the circuit take a lot of current (eg LED display)
you may need to isolate those during programming, or have the
regulator output match the programmer Vcc so that power can
be applied. A possible problem there is that some programmers
verify at Vcc lower than your specific 5V. I'm sure Olin can
advise you on pitfalls and workarounds

Joe

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