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Observer
Observer
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Registered: ‎04-14-2017

Spartan II Product End of Life

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A customer requires 5v inputs. Because Spartan II supports 5v inputs does it make sense using it in a new design or is it to be discontinued soon? Is it discontinued already? I cant find a timeline for Spartan II.

Is there a better choice that supports 5v inputs without external parts?

 

Cheers,

-P

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Advisor
Advisor
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Registered: ‎04-26-2015

Re: Spartan II Product End of Life

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I don't know of any modern FPGA that can tolerate 5V inputs.

 

Atmel (now Microchip) has the ATF15 series of CPLDs, which are ancient - but Microchip is very rarely kills off old product lines unless they have a 1:1 replacement lined up. However, they're obviously pretty tiny chips. Even compared to a Spartan 2, they're going to be very limited.

 

I can see three other options:

 

(1) Some of Xilinx's FPGAs have clamp diodes to VCCO in each I/O pin (the Spartan 3 does, the Spartan 6 does not, and as far as I can tell the 7-series does). If you insert a series resistor, these ports can be 5V tolerant. One series resistor per pin is not a huge cost.

 

(2) Level conversion is cheap, and it can sometimes serve two purposes (eg. ESD protection for the FPGA ports as well as the actual level conversion).

 

(3) Something other than an FPGA. A Spartan 2 is pretty small; with the speed (and flexibility) of modern microcontrollers (many of which do still have 5V tolerant inputs, or even full 5V I/O) you might be able to achieve similar performance.

 

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Moderator
Moderator
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Registered: ‎05-02-2017

Re: Spartan II Product End of Life

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hi @petersanch,

 

I believe your looking to know Spartan II EOL (end of life), I believe this device is no more into product by Xilinx , there is a product discontinuation notice also.

 

https://www.xilinx.com/support/documentation/customer_notices/xcn12026.pdf

 

https://www.xilinx.com/support/documentation/customer_notices/xcn08011.pdf

 

https://www.xilinx.com/about/contact/authorized-providers.html

 

For the availability  of devices  you can contact   our sale respresnt sales representatives and authorized distributors

 

https://www.xilinx.com/about/contact/authorized-distributors.html.

 

https://www.xilinx.com/about/contact/sales-reps.html.

 

Ta

Chandra

 

 

Regards
Chandra sekhar
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Advisor
Advisor
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Registered: ‎04-26-2015

Re: Spartan II Product End of Life

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I don't know of any modern FPGA that can tolerate 5V inputs.

 

Atmel (now Microchip) has the ATF15 series of CPLDs, which are ancient - but Microchip is very rarely kills off old product lines unless they have a 1:1 replacement lined up. However, they're obviously pretty tiny chips. Even compared to a Spartan 2, they're going to be very limited.

 

I can see three other options:

 

(1) Some of Xilinx's FPGAs have clamp diodes to VCCO in each I/O pin (the Spartan 3 does, the Spartan 6 does not, and as far as I can tell the 7-series does). If you insert a series resistor, these ports can be 5V tolerant. One series resistor per pin is not a huge cost.

 

(2) Level conversion is cheap, and it can sometimes serve two purposes (eg. ESD protection for the FPGA ports as well as the actual level conversion).

 

(3) Something other than an FPGA. A Spartan 2 is pretty small; with the speed (and flexibility) of modern microcontrollers (many of which do still have 5V tolerant inputs, or even full 5V I/O) you might be able to achieve similar performance.

 

View solution in original post

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Xilinx Employee
Xilinx Employee
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Registered: ‎08-01-2008

Re: Spartan II Product End of Life

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you may say so, because the tool support for Vitex and Spartan 2 has ended with ISE11.1.
So, they are no longer recommendable for new designs.
If you are doing retro designs, you either have to use level shifters, or you use the Spartan 3(E) series FPGAs.
See this link to get an idea:
http://www.trenz-electronic.de/products/fpga-boards/oho-elektronik.html
Thanks and Regards
Balkrishan
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