Adequate Replacement for EPM7064STC44-5

[Nathen]

Hi,

I have a project that utilizes the EPM7064STC44-5 chip, however, Intel has obsoleted this part. Do you know what part would be a good alternative to this chip that Intel supports and has the same speed (5ns)?

Respectfully,

Nate

[AlHill]

Plenty can be found on that auction site:

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313&_nkw=EPM7064STC44-5&_sacat=0

Doc (not an Intel employee or contractor)
[Maybe Windows 12 will be better]

[Nathen]

I am aware the chip can be purchased through some sources and I think arrow still has some, however, if I am going to perform redevelopment, it makes sense to use a chip that is supported and will not be obsolete any time soon.

[ak6dn]

Well if you are looking for a replacement for a redesign, you have to be a lot more specific about your needs to get reasonable responses.

Do you need 5V I/O compatibility?

How many and what kind of I/O capability?

You say you need '5ns speed', but what do you really need?

What is your clocking frequency requirement? Is it really ~200MHz as 5ns would imply?

Does it need instant-on like the EPM7K series CPLD, or can it configure from an EEPROM during startup?

Probably a MAX series device (5 or 10) that should be around for quite a while is suitable for your needs.

But without more specific requirements on your part it is hard to give specific recommendations.

[Nathen]

Understandable in regards to the development requirements. I am again, new to this, so I haven't established the design criteria yet, thus I am mostly just trying to find a chip that has comparable characteristics.  It appears that the CPLD world has been replaced solely by FPGAs, but I wasn't sure and the difficulty of finding a development board that is still available online. Even the MAX V development board (DK-DEV-5M570ZN) is backordered at least from digikey and mouser. I am using the prop delay of 5ns as I know that the differential signals that I am going to be processing has a fast transition as it is reading and processing signals from a very dense glass encoder wheel. I think you are probably correct with the MAX V being a good solution if I can get my hands on a development board. I was also considering looking into a lattice or Xilinx device.

For comparison, I have added the basic information for both devices. There are different MAX V devices. This one is no longer available, but has a prop delay of 6.2ns, which is the closest I can get to the original device specs that I can find so far. I also understand I will have to change the voltage levels as well, but at the moment I am not worried about that as much. If there is someone that has a different chipset that would work, I would really apricate the help.

Nate

[ak6dn · Accepted solution]

There is always the MicroChip/Atmel ATF1504 series part as well.

Still in active production, is a drop in replacement for the EPM7000S series parts 7032/7064/7128.

They even have a tool (POF2JED) that will convert an existing Altera .POF file into the Atmel .JED file to program their part.

I have dropped numerous ATF1504AS parts into existing EPM7064S based boards. Fully functional compatible in my experience.

[Nathen]

That is a great idea! I will look into that. Thank you so much for suggesting the ATF1504. I may still run into timing issues and part availability simply due to the current times with the chip shortage, but that sounds like good replacement and a good place to start.

[Farabi]

Hello,

I am sorry, from intel part number, there is no drop in replacement available now. If you want to upgrade your design, you can use MAX V or MAX 10 as a design upgrade.

regards,

Farabi

[Fakhrul]

Hi Nate,

We do not receive any response from you to the previous answer provided.

Please feel free to let me know if there is any concern so we can further assist you. 

Otherwise, this thread will be marked as inactive and transitioned to community support because there has been no update received from you in a while.

Thank You.

Regards,

Fakhrul