Thanks for all the comments. The JEDEC file created for a Cypress
PALCE20V8 appears to work perfectly in a Lattice GAL20V8. :-)
Cheers
Reply by ●July 29, 20052005-07-29
>>
1. partis Jul 28, 12:19 pm show options
Newsgroups: comp.arch.embedded
From: "partis" <gary.par...@gmail.com> - Find messages by this author
Date: 28 Jul 2005 12:19:34 -0700
Local: Thurs, Jul 28 2005 12:19 pm
Subject: PALCE & GAL Devices
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I have been led to believe tha PALCE devices are fuse (and everything
else!) compatable with GAL devices.
Is this correct?
<<
They are nominally compatible but watch out for performance
differences. I picked up some AMD PACLCE22V10's as a cheaper
replacement for Lattice GAL22V10's and had really nasty problems with
ground bounce, metastability, and just general weirdness. I had to
recall all those boards and refit GAL's.
Bob
Reply by Mike Harrison●July 29, 20052005-07-29
On 28 Jul 2005 12:19:34 -0700, "partis" <gary.partis@gmail.com> wrote:
>I have been led to believe tha PALCE devices are fuse (and everything
>else!) compatable with GAL devices.
>
>Is this correct?
>
>More specifically, can a JEDEC file aimed at a Cypress PALCE20V8 be
>programmed into a Lattice GAL20V8 without modification?
>
>Thanks in advance,
>
>Gary Partis
Probably. I do have vague memories of some AMD PALCE devices having differing fuse counts to the
corresponding GAL, but GAL files still working.
If the fuse count is the same then it is pretty likely they are compatible.
Reply by Jim Granville●July 28, 20052005-07-28
partis wrote:
> I have been led to believe tha PALCE devices are fuse (and everything
> else!) compatable with GAL devices.
>
> Is this correct?
>
> More specifically, can a JEDEC file aimed at a Cypress PALCE20V8 be
> programmed into a Lattice GAL20V8 without modification?
>
> Thanks in advance,
>
> Gary Partis
My device programmer shows 2706 fuse counts in all Atmel ATF20V8,
lattice GAL20V8, and PALCE20V8 devices.
Have you tried it yet ?
-jg
Reply by Antti Lukats●July 28, 20052005-07-28
"partis" <gary.partis@gmail.com> schrieb im Newsbeitrag
news:1122578374.600478.75280@g43g2000cwa.googlegroups.com...
> I have been led to believe tha PALCE devices are fuse (and everything
> else!) compatable with GAL devices.
>
> Is this correct?
>
> More specifically, can a JEDEC file aimed at a Cypress PALCE20V8 be
> programmed into a Lattice GAL20V8 without modification?
>
> Thanks in advance,
>
> Gary Partis
>
as much as I recall you are correct. we used PALCE and GAL in the same
design with the same JEDEC file.
the actual programming algorithm is different but otherwise they should be
compatible
Antti
Reply by partis●July 28, 20052005-07-28
I have been led to believe tha PALCE devices are fuse (and everything
else!) compatable with GAL devices.
Is this correct?
More specifically, can a JEDEC file aimed at a Cypress PALCE20V8 be
programmed into a Lattice GAL20V8 without modification?
Thanks in advance,
Gary Partis