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Date Posted: 07:25:26 02/07/02 Thu
Author: Potter
Subject: Re: Potter's 5508w schematic
In reply to: sphinx 's message, "Re: Potter's 5508w schematic" on 20:09:27 02/05/02 Tue

Hi
The basic SX has a max speed of 50MHz but this design IE software is for 20MHz so that's the resonator you need. ICPROG supports the fluffy but only for SX28 chips which are much the same as the SX18 in terms of memory but have more I/O pins. The FUSE settings are different in at least 1 bit so it may not work (never tried it) - the safest method would be to use the fluffy.exe command line program which supports both for old and new version SX's (be sure to use the SX1828NEW option!). I wrote a little VB5 front end program for it (fluffyint.exe) but it has problems for some users it seems.

>Hi Potter,
>I have contacted the local parts supplier you
>recommended and am about to order but he only has SX18
>50mhz chips so does this mean I also need to get the
>50mhz resonator?
>Also I have had a look at ICProg104, on first use it
>asks which programmer I am using so I selected Fluffy,
>but in the program there is only one sx chip in the
>menu (sx28ac new), so what chip do I select for SX18?
>Thanks again Potter, getting close now.

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Replies:

  • Chip preservation tip -- Potter, 08:15:43 02/07/02 Thu
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