Spartan 7 for $89- Introducing the Arty S7-25!

A few months ago we released the Arty S7 and only had the Arty S7-50 available. Today, we are introducing the Arty S7-25, the lowest cost Arty board to date.

To recap, the Arty S7 products are Arty-form factor boards built around Xilinx’s cost-optimized, Spartan 7 FPGA family. The Spartan 7 family was released to give engineers access to high-class performance, high cost per watt ratios and with small form factor packaging options. The technology is on the 28nm processes, vs the older, slower 45nm technology that Spartan 6 is. Fully supported in Vivado, the Spartan 7 FPGA is ideal for engineers who enjoyed the applications of the Spartan 6, but want to use a more up-to-date technology and toolchain.

The Arty S7 comes in two varieties. They are identical, except for the FPGA on board, which differs in the following table:

Variant Arty S7-25 Arty S7-50
Price $89 $109
FPGA part XC7S25-CSGA324 XC7S50-CSGA324
1 MSPS On-chip ADC Yes Yes
Logic Cells 23,360 52,160
Slices 3,650 8,150
Flip-flops 29,200 65,200
Block RAM (Kbits) 1,620 2,700
Clock Management Tiles 3 5
DSP Slices 80 120
Internal Clock Speed 450MHz +
On board ADC Yes (XADC)
Programmable over JTAG/QSPI Yes

If you are curious about what an Arty S7 can do, check out the Element 14 Road Test and the Arty S7 Pmod Pack. Both of these should be compatible with the Arty S7-25, but if there are any questions about migration, we encourage you to visit the Digilent forum.

We are excited about the addition of the Arty S7-25 and can’t wait to see what designs it enables!


About Larissa Swanland

I'm a bit of an electronics-education evangelist. After all, Education is how we learn about the world. Electronics make the world better. Engineers change the world. So more engineers that know how to design and create electronics? That's the kind of world I want to help create.

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2 Comments on “Spartan 7 for $89- Introducing the Arty S7-25!”

  1. Could you, please, make a comparison like above of all Arty family members? Including board capabilities, FPGA/SoC resources and adding a little suggestions of use for each board? It could be helpful in picking first FPGA devboard.

  2. I‘m not sure if the Arty S7-25 is a good option. I have an original Arty with A7-35 and notice that a MIG core to use the DRAM easily consumes around 30% of the FPGA ressources. The S7-25 is considerably smaller.
    The S7-50 is much more appealing (also compared to the A35) but I‘m missing the Ethernet Phy on the Spartan-7 Arty boards. So I think the S7 boards are ok, when you really want to evaluate the Spartan-7 itself. If you just want a low cost series 7 FPGA board and don’t care about the exact chip on it, the original Arty is the best value in my opinion.
    Maybe the S7-25 would be a good fit for a Cmod S7.

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