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From: Joseph on 5 Apr 2008 03:51
Hi all,

I am looking for the datasheet of the PLS161 which was a PLA. My
interest in it is purely academic. I am teaching a high level digital
electronics course and would like my students to see a datasheet of a
PLA before progressing to CPLD and FPGA's

I would be very grateful if someone could give me the datasheet of
this device or a similar PLA.

Many thanks

Regards

Joseph A. Zammit
Malta
From: Jim Granville on 5 Apr 2008 06:22
Joseph wrote:

> Hi all,
>
> I am looking for the datasheet of the PLS161 which was a PLA. My
> interest in it is purely academic. I am teaching a high level digital
> electronics course and would like my students to see a datasheet of a
> PLA before progressing to CPLD and FPGA's
>
> I would be very grateful if someone could give me the datasheet of
> this device or a similar PLA.
>
> Many thanks

Try the PLC42VA12 ?
Quite clear drawings, and a descendent of the PLS161

http://www.nxp.com/acrobat_download/datasheets/PC42VA12.pdf

and this simpler sibling ?
http://www.nxp.com/acrobat_download/datasheets/PLC18V8Z.pdf

Those two, should give a reasonable stepping stone sequence.

The CoolRunner still has aspects of PLA (able to share product terms)
but the data sheets are not as well drawn.

-jg

From: Jim Granville on 5 Apr 2008 06:35
Jim Granville wrote:

> Joseph wrote:
>
>> Hi all,
>>
>> I am looking for the datasheet of the PLS161 which was a PLA. My
>> interest in it is purely academic. I am teaching a high level digital
>> electronics course and would like my students to see a datasheet of a
>> PLA before progressing to CPLD and FPGA's
>>
>> I would be very grateful if someone could give me the datasheet of
>> this device or a similar PLA.
>>
>> Many thanks
>
>
> Try the PLC42VA12 ?
> Quite clear drawings, and a descendent of the PLS161
>
> http://www.nxp.com/acrobat_download/datasheets/PC42VA12.pdf
>
> and this simpler sibling ?
> http://www.nxp.com/acrobat_download/datasheets/PLC18V8Z.pdf
>
> Those two, should give a reasonable stepping stone sequence.
>
> The CoolRunner still has aspects of PLA (able to share product terms)
> but the data sheets are not as well drawn.

I'll add a bit more:

For current production devices, look at Atmel who have SPLD and CPLD.

http://www.atmel.com/dyn/products/datasheets.asp?family_id=653
http://www.atmel.com/dyn/products/other_docs.asp?family_id=653

A good CPLD Macrocell drawing is here:

http://www.atmel.com/dyn/resources/prod_documents/doc3659.pdf

Atmel tool flows are small and nimble, and can fit on a USB Flash Drive.

So, if you wanted, students could actually compile something, or
you could set some homework to have them change some aspect of
an example design.

The FIT report files are very readable, so they hand those in, and you
mark that.

-jg



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