PALCE & GAL Devices

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

"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

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

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.

>>

1. partis 	  Jul 28, 12:19 pm     show options
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Date: 28 Jul 2005 12:19:34 -0700
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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

Thanks for all the comments. The JEDEC file created for a Cypress
PALCE20V8 appears to work perfectly in a Lattice GAL20V8. :-)

Cheers