AVR-Chat

David Collier wrote:
> I'm sticking one of these on a board, for my sins.
> 
> Do I gather it has a 1-wire programming mode, which COULD use a 2-pin 
> connector, but that you can only use the 2-wire mode once you've blown a 
> fuse which requires a 6-pin ( or 10-pin ) mode?
> 
> So if I put on a 6/10-pin pseudo-connector, and drive it once through 
> pogo-sticks or something, then thereafter I can just use a 2-pin 
> connector?
> 
> Would I ever want/need to un-blow the fuse and use the 6-pin version 
> again?

As they point out in the manual, it uses more power supply current if
it's enabled.

You don't have to bother with the pseudo-connector; for development
(which is where you'd want DWEN, right?) you could just use a test clip
to do serial programming or HV serial programming in-circuit (but you
have to be sure that your circuitry doesn't interfere with the
programming pins).

Or you could use a programming socket and program the fuse in an STK500
or something (though ZIF 8-pin SO sockets are expensive, I'd guess).

Or you could use a test clip and supply power and ground and programming
signals from an STK500 or other serial programmer (this is what I plan
to do for my SO-8 Tiny45s). If you're hand-soldering prototypes, this
may be the easiest. Or you could solder the tiny down first and program
it using a test clip, then do the rest of the circuitry.


Thanks,
-- 
Ned Konz
ned@bike-nomad.com
http://bike-nomad.com