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Re: AVRISP mk2 schematic

2007-12-07 by Not tellin

--- In AVR-Chat@yahoogroups.com, John Samperi <samperi@...> wrote:
>
> At 08:53 PM 5/12/2007, you wrote:
> >Tim... You could also check out
> >http://www.kanda.com/index.php3?cs=1&bc=partno&bw=avrhhp
> 
> Nice to know you are around. I did look at your keyfob
> a few weeks ago and got confused unfortunately :(
> 
> A couple of comments. I NEVER used 10 pins ISP connectors,
> only 6 pin type for the past 8 years or so. Don't want to
> buy or use an adaptor as it is a waste of money as far as
> I'm concerned, the world seems to have passed by the 10 pin
> ISP stuff, will you be doing a 6 pin ISP type of keyfob?

We do supply a 6pin adapter, but have never sold it as its never been
that popular. As all our kits use 10pin headers no one really ever
asks for them. So our experience is that 6pin is not as popular as
10pin headers.

> 
> Mention of parallel port for anything apart from a printer
> gives me goose bumps with modern computers, do I really need
> to plug something into my (now almost obsolete) parallel port
> in order to download stuff into the keyfob? Do I really need to
> shell out for an otherwise unused starter kit in order to load
> code into the keyfob?

I'm working hard on the next USB software release. Also how do you
load code if you don't have a way to load the code. Thats why you need
the starter kit. You can get as many programmers as you like once you
have the programming kit.

> 
> Does the keyfob do lock bits and fuses as well as flash and eeprom
> with just a single button? Your website only says:
> "program/verify Flash and EEPROM with a single button press "
> 
Of course.

> No support for chips with more than 64k flash (ie M128)? If a program
> uses the full 64K is there still enough room for the eeprom code of
> say 4K?

no, not on the keyfob, but the Handheld programmer supports 256k
devices and full eeprom support. They also have better voltage
protection, can power the target etc. Unfortunately the keyfob has to
be the size it is for now because of the eeprom it uses. But inside
info now... Looks around... I have a 256k keyfob with all the above
ready for USB testing ;)

> Just some clarifications for myself and possibly others.
> 
> Regards
> 
> John Samperi

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